Method using curvilinear translation method to process material load-deformation curve
Technical field (a): The invention relates to a method for processing by adopting curve translation method of deformation curve of the material load, curve removed the short, the material in the field of mechanical testing performance data processing method, and material testing machine using the method. Background technology (b): The material testing machine does loading test of the material, obtained by the starting point of deformation curve of the material load is not almost all the origin of coordinates, in accordance with the relevant material mechanics performance test standard, should be horizontal and the vertical movement of the coordinate system, the origin of coordinates of the test to the start point of a curve, in other words 1st points coincide. In recent years, some modern material testing machine built-in software also adopts this kind of mobile method, however, this kind of movement is not reasonable, will not only to raise or lower the force of the key points; mechanical performance parameters of the material, the mechanical performance indicators to generate the error, but also the deformation of the key points of the unreasonable correction value, corresponding to the impact precision should be variable. When the testing machine of the collected data points 1st, is the zero value to value and after deformation of the dozens of milliseconds or several hundred milliseconds, when the load value and the deformation value of zero is not possible, unless the testing machine of the sensitivity of the load sensor and extensometer are not qualified. Early novel testing machine built-in software, designed to be quite simple and rough, therefore, it is not to make any movement of the test curve, but in so doing it is not reasonable, in addition to not can accurately determine elongation stress other than the non-proportion, will also reduce the strain precision of the parameter key point. Engineering in the great majority of metal material is required for the non-proportion of parallel lines extending stress method to confirm the important mechanical parameter, this parameter is also called nominal yield stress σ0.2, since only a few metal material has a yield stress of σs, so the vast majority of the strength of the metal material to review σ0.2 as the standard, however, only when the test curve initial straight line segment of the connecting line of the two endpoints through the origin of coordinates at the time of the extension, horizontal axis in order to determine the length of the extension of the right side of the point of the two, through this point as the initial straight line connecting the two end points of the curve intersecting parallel lines, intersecting point is the only non-proportionally elongation on point of force position. Clearly, testing machine built-in software in the past and are now not achieve this. Only confirm the original until two end points of the line segment, and through the test curve translation, the two end points of the extension line of the connection line through the origin of coordinates, to be achieved in order to visually express the geometric form is directly proportional to force and deformation of the Hooke's law, modern testing machine software also has failed to do so. this point. (C) the content of the invention is: In view of the above problems, the purpose of this invention is to provide a material testing machine used to accurately determine the curve of the non-proportion of translation elongation stress, and force and deformation parameter of the other effective method for accurately corrected; Another purpose of this invention is to provide an intuitive topics is proportional to the deformation and Hooke's law of geometric method for range of application; Another of the present invention aims to various types of testing can be widely applied to provide a tensile, compression, bending, torsion and shear the horizontal movement of the load deformation curve method. Through the following technical scheme to realize the above-mentioned purpose: The invention relates to a method for processing by adopting curve translation method of deformation curve of the material load, the method comprises the following steps: (A), obtained by the material testing machine used for initial straight of the two end points of the line segment P0 (xi0, yi0) and PP (xip, yip) later, for connecting two end points and the line connecting downwardly-extending, the extension line to intersect with the transverse axis, the recorded coordinates of the point of intersection (ΔX, 0); (B), by a formula (C), the load deformation curve, initial linear section of the connecting line of the two end points and extension lines horizontal movement-ΔX together, the extension line through the origin of coordinates; (D), when the data points when the jumping back and forth, to adopt the data packing way to obtain the method of deformation curve of the material load the data of the curve of the draw. Wherein in the step (a) in the initial linear section of the two end points P0 (xi0, yi0) and PP (xip, yip), is using the determined initial deformation curve of the material load straight line segment and mechanical performance parameter of the method. Wherein there is no yield limit of the plastic material, only after the completion of parallel displacement of curve, according to the parallel method to confirm only the non-proportion of the elongation stress of the point and; finally, the key point on the curve of the output test, includes a proportional limit point, upper and lower yield point, and the broken breakpoint of the highest fulfilled stress and strain and display the critical point. Wherein the curve of the upper end of the initial straight line segment point PP straight line in respect to the origin of coordinates is proportional to force and deformation of the Hooke's law and intuitive geometric range of application. Wherein the non-proportion of parallel lines for extending stress determines the step of mechanical testing standards should be: from the origin of coordinates to find the right side of the extension of the length of the horizontal axis of that point of the two; from this point the initial linear section to the pair of two-end connection with the already has translated parallel lines intersecting the curve of the, crossingpoint is to ascertain and display the point of intersection of the; intersection point for the ordinate, namely strength value , divided by the cross-sectional area of the test piece, is non-proportionally elongation stress; for the horizontal coordinate of the intersection point, in other words the bars, by the extension of the SPAN, to obtain non-proportionally elongation strain; output this stress and strain. Wherein the critical point on the curve includes a proportional limit point, upper and lower yield point, and the highest breakpoint fulfilled, their deformation value must add-ΔX, is the only accurate value. Wherein the method for processing by adopting curve translation method of deformation curve of the material load can be used for the tensile test, it also can be used for compression, bending, torsion and shear when the translation of the test curve as well as strength and deformation accurately corrected of performance parameters. Wherein in the step a material testing machine used, which comprises a test machine main body, test data acquisition and processing system and display, the material testing machine after the completion of material testing, test data acquisition and processing system automatically adopts the above-mentioned method to obtain deformation curve of the material load, and displayed in the display unit. Poor for analog testing machine and precision of a digital testing machine of the collected data, as the front and back jumping, the data merging first needs to be carried out, the data merging process for the data after the load-deformation curve drawn, then the curve fit is determined by the energy ratio method for initial straight on two end points of the line segment, curve translation method can be used. The good performance of a digital tester the test curve, than the method using energy first, and then curve translation method. Please refer to the applicant at the same time submitted to the title of invention of "adopt the data packing way to obtain material load deformation curve method" and "confirm the material load deformation curve initial straight line segment and mechanical performance parameters of the method of the" Patent application. Mode to obtain a data merging method of deformation curve of the material load, the data merging process short; determining initial deformation curve of the material load straight line segment and mechanical performance parameters of the method, the energy ratio method for short. The main content of the data merging method is: The deformation value xi the same data points divided into a group, each group of data points is obtained in all load value yi average yi, thus merged into the new data points (xi, yi); the new data points (xi, yi) displayed in the coordinate system, so as to obtain the load deformation curve of the material. The average calculated yi later, still further include whether to choose: omitted from the average value in each group yi the most distant one or several load value yi, then once again find the average value of the group, thus combined into a new data point (xi, yi), more smooth the curve. Energy ratio of the main content of the of the act: For determining the initial deformation curve of the material load straight line segment and mechanical performance parameters of the method, the method comprises the following steps: A, is taken out from the material test machine to a material obtained by carrying out test data, when the data points when the jumping back and forth, to adopt the data packing way to obtain the deformation curve of the material load of the data, for example by using the data packing way to obtain the method of deformation curve of the material load, the data on a transverse axis in order to extend the, as a load of the longitudinal axis in the coordinate system, the test curve of a form of data points; B, using two data points to a straight line between the area under the molecule, the area under the curve as the denominator for the energy ratio, that is, according to the determined initial deformation curve of the material load straight line segment and mechanical performance parameters of the test curve of a method for determining the starting point of the initial straight line segment P0 and endpoint PP, and display P0 point and PP point; C, according to the end point of the initial straight line segment PP calculate the proportional limit σP; D, according to the starting point of the initial straight line segment P0 and endpoint PP E elastic modulus is calculated; E, used for the initial straight line segment is connected with the two end points, extending the straight line to intersect with the transverse axis, display the straight line and the extension line; F, output relevant data and mechanical performance parameters, including the size of the test piece, the test speed, elastic modulus of the material, proportional limit, intensity limit, the breaking force. Wherein in the step b to determine the initial deformation curve of the material load straight line segment and mechanical performance parameters of the method of determining an initial straight line segment of the two endpoint comprises the following steps: (1), than the selected allowable energy aRu; (2), the sequence number of data points in the curve fit is determined and coordinate, that the whole curve i in the Serial number of the data, expressed as coordinates (xi, yi); that the whole of a section of curve of the starting point of the Serial number of the initial curve i0, coordinates as (xi0, yi0); terminal Serial number as the iP, coordinates as (xip, yip); (3), a group of Serial number selected i0 and ip, application formula (4), application formula U0 = 0.5 (yi0 +yip) (xip-xi0) find Serial number of the data point i0 and ip the area under the straight line between, this is a large trapezoidal area, is an idealised energy, wherein: U0 is the Serial number data points i0 and ip the area under the straight line between, (xi0, yi0) and (xip, yip) is the Serial number data points i0 and ip the coordinate value of the corresponding; (5), using the formula (6), so that changing the data point, when the iP is to make the RU is greater than or equal to aRU the Serial number of the last data point, Serial number i0 and iP line segment between the initial straight line segment can be regarded as only, and using P0 (xi0, yi0) and PP (xiP, yiP) initial straight said starting point and the endpoint of the line segment. Wherein in the step (1) in, aRU the value may be selected in the range of 0.9-1.1. wherein aRU can be set to the value of the further range of 0.950-0.999, 0 . 950 are used frequently in a very short initial linear section of the test curve, 0.999 often used for initial line segment very long test curve, when the initial linear segment of the-projection, the calculated RU will be greater than the 1. Wherein in the step (3) in, i0 can be selected in the range of 2-7. Wherein in the step c employing formulae Wherein in the formula in step d application The advantages and effects of the present invention lies in: method for processing by adopting curve translation method of deformation curve of the material load the material tester provides a translation to accurately determined by the curve of the non-proportional elongation stress, and force and deformation parameter of the other effective method for accurately corrected. By (four): Figure 1 is located in the right side of the graph of the cast iron -1 tensile curves application of the curve of the curve obtained after removed; there is no translation of the curve is located on the left side of the graph. Figure 2 is another diagram of Figure 1 shaped display mode, the left side of the curve is the curve of the original data, the processed data do not directly display the original position, but only after the translation to the right display. Figure 3 locates in the diagram in the right side of the of the removed copper elongation curve obtained after application of the curve of the curve; there is no translation of the curve is located on the left side of the graph. Figure 4 locates in the diagram in the right side of the brass -1 is the tensile curves application of the curve of the curve obtained after removed; there is no translation of the curve is located on the left side of the graph. Fig. 5 locates in the diagram in the right side of the low-carbon steel is A3 -1 (or Q235-1) elongation curve obtained after application of the curve of the curve removed; there is no translation of the curve is located on the left side of the graph; Figure 6 is N-S flowdiagram of curve translation method. Description of symbols in the Figure are as follows: Deformation Extension Load load The concrete mode of execution of (five): The invention relates to a method for processing by adopting curve translation method of deformation curve of the material load, the method comprises the following steps: (A), obtained by the material testing machine used for initial straight of the two end points of the line segment P0 (xi0, yi0) and PP (xip, yip) later, for connecting two end points and the line connecting downwardly-extending, the extension line to intersect with the transverse axis, the recorded coordinates of the point of intersection (ΔX, 0); (B), by a formula (C), the load deformation curve, initial linear section of the connecting line of the two end points and extension lines horizontal movement-ΔX together, the extension line through the origin of coordinates; (D), when the data points when the jumping back and forth, to adopt the data packing way to obtain the method of deformation curve of the material load the data of the curve of the draw. Wherein in the step (a) in the initial straight line of the two endpoint, is deformation of the material load curve using the determined initial straight line segment and mechanical performance parameter of the method. Wherein there is no yield limit of the plastic material, only after the completion of parallel displacement of curve, according to the parallel method to confirm only the non-proportion of the elongation stress of the point and; finally, the key point on the curve of the output test, includes a proportional limit point, upper and lower yield point, and the broken breakpoint of the highest fulfilled stress and strain and display the critical point. Wherein the curve of the upper end of the initial straight line segment point PP straight line in respect to the origin of coordinates is proportional to force and deformation of the Hooke's law and intuitive geometric range of application. Wherein the non-proportion of parallel lines for extending stress determines the step of mechanical testing standards should be: from the origin of coordinates to find the right side of the extension of the length of the horizontal axis of that point of the two; from this point the initial linear section to the pair of two-end connection with the already has translated parallel lines intersecting the curve of the, crossingpoint is to ascertain and display the point of intersection of the; intersection point for the ordinate, namely strength value , divided by the cross-sectional area of the test piece, is non-proportionally elongation stress; for the horizontal coordinate of the intersection point, in other words the bars, by the extension of the SPAN, to obtain non-proportionally elongation strain; output this stress and strain. Wherein the critical point on the curve includes a proportional limit point, upper and lower yield point, and the highest breakpoint fulfilled, their deformation value must add-ΔX, is the only accurate value. Wherein the method for processing by adopting curve translation method of deformation curve of the material load can be used for the tensile test, it also can be used for compression, bending, torsion and shear when the translation of the test curve as well as strength and deformation accurately corrected of performance parameters. With the stated method of the detailed description in the Figure are as follows: Description of the drawing Figure are the original data from the analog testing machine, this is because these pattern of the absolute value of Δ X are relatively large, it is easy to distinguish the curve of the translational back and forth. All of the original data are the data merging process, specific data merging processing method refer to the applicant of the application at the same time "adopt the data packing way to obtain material load deformation curve method"; the new data after the merger of draw after deformation curve, the only method for determining energy ratio of the initial straight deformation curve of the material load two end points of the line segment, specific use method can refer to the applicant at the same time the invention relates to an application for "adopt the data packing way to obtain material load deformation curve method" and "confirm the material load deformation curve initial straight line segment and mechanical performance parameters of the method of the" Patent application. In determining the initial linear section on the basis of the two endpoints, further adopts the curve translation method for processing the same. The material testing machine used to obtain the initial quantity compared to law of the two end points of the straight line segment P0, PP later, in the construction of a coordinate system, the two end points for P0, PP line and the line connecting downwardly-extending with respect to a horizontal axis intersecting, the point of intersection is calculated (Δx, 0) coordinate value Δx the level of; the test curve, the two ends of the initial straight line of the extension line of the connection wire and horizontal movement-Δx together, the extension line of the line through the origin of coordinates. The absence of a yield limit of plastic material, after the completion of parallel displacement of curve by paralleles method to confirm that the non-proportion of the elongation stress of the point and; finally, the key point on the curve of the output test, includes a proportional limit point, upper and lower yield point, and the broken breakpoint of the highest fulfilled stress and strain and display the critical point. Wherein said determining non-proportional elongation stress comprises the following steps: from the origin of coordinates to find the right side of the extension of the length of the horizontal axis of that point of the two; from this point the initial linear section to the pair of two-end connection with the already has translated parallel lines intersecting the curve of the, display the point of intersection; the intersection point for the ordinate, namely strength value divided by the cross-sectional area of the test piece, is non-proportionally elongation stress; the intersection point for the cross coordinate, the elongation value by extension meter-SPAN, to obtain non-proportionally elongation strain; output this stress and strain. Figure 1 is located in the right side of the graph of the cast iron -1 tensile curves application of the curve of the curve obtained after removed; there is no translation of the curve is located on the left side of the graph. Translation-Δx=8.53068 × 10-3 mm, extensometer SPAN Le = 50mm, from the origin of coordinates to the PP point between the segment of straight line, is proportional to force and deformation of the Hooke's law of geometric expression. No translation of the P0 (xi0, yi0) and PP (xip, yip) to the coordinate value xi0 = 1.654241 × 10-3 mm, yi0 = 1607.118 (N), xip = 5.593401 × 10-2 mm, yip = 10172.13 (N), the formula Figure 2 is another diagram of Figure 1 shaped display mode, the left side of the curve is the curve of the original data, the merged data is not directly displayed in the original position, but only after the translation to the right display. Figure 1 and Figure 2 in the curve of the method of data integration law and energy than has been done in detail Figure 3 locates in the diagram in the right side of the of the removed copper elongation curve obtained after application of the curve of the curve; there is no translation of the curve is located on the left side of the graph. Energy ratio setting the permissible aRU = 0.965, actual energy than RU = 0.9650071, elastic modulus E=119.6884GPa, proportional limit σP = 223.2289MPa, curve translation-Δx=6.933109 × 10-3 mm. Figure 4 locates in the diagram in the right side of the brass -1 is the tensile curves application of the curve of the curve obtained after removed; there is no translation of the curve is located on the left side of the graph. Energy ratio setting the permissible aRU = 0.965, RU = 0.9727834, E=90.4323GPa, σP = 93.20482MPa, curve translation-Δx=3.923707 × 10-3 mm. Fig. 5 locates in the diagram in the right side of the low-carbon steel is A3 -1 (or Q235-1) elongation curve obtained after application of the curve of the curve removed; in a part of display only yield stage, there is no translation of the curve is located on the left side of the graph. aRU = 0.99, RU = 0.9935864, proportional elongation stress and yield are the same numerical, σP = 333.0758MPa = σs, E=201.687GPa, curve translation-Δx=4.253736 × 10-3 mm. The invention will be completed in all automatic continuous data integration law, can be removed and quantity compared to law the graphical display of the curve, data output, and graphic by formula. Disclosed is a method for processing a load-deformation curve of a material by a graphic shifting method. The method comprises the following steps: (a) a line is made to connect two end points of an initial tangential path of the curve obtained from a material testing machine, and is extended downwards to make the extension line and the transverse axis intersect, the coordinate of the intersection being denoted by (delta X, 0); (b) formula (I) is used to work out delta X for output; (c) the load-deformation curve, the line connecting two end points of the initial tangential path and the extension line are shifted with negative delta X all together in the horizontal direction, the extension line passing through the origin of coordinates; (d) if the data points jump forward and back, the curve should be drawn through the data of the load-deformation curve after data merging. 1. A method for processing by adopting curve translation method of deformation curve of the material load, characterized in that it comprises the following steps: (A), obtained from the material tester, the curve of the two end points of the initial linear section P0 (xi0, yi0) and PP (xip, yip) for wiring and downwardly-extending, the extension line to intersect with the transverse axis, the recorded coordinates of the point of intersection (ΔX, 0); (B), by a formula (C), the load deformation curve, initial linear section of the connecting line of the two end points and extension lines horizontal movement-ΔX together, the extension line through the origin of coordinates; (D), when the data points when the jumping back and forth, to adopt the data packing way to obtain the method of deformation curve of the material load the data of the curve of the draw. 2. The a method for processing by adopting curve translation method of deformation curve of the material load according to Claim 1, characterized in that in step (a) in the initial linear section of the two end points P0 (xi0, yi0) and PP (xip, yip), is using the determined initial deformation curve of the material load straight line segment and mechanical performance parameter of the method. 3. The a method for processing by adopting curve translation method of deformation curve of the material load according to Claim 1, characterized in that there is no yield limit of the plastic material, only after the completion of parallel displacement of curve, can be used for only the non-proportion of parallel lines extending stress determines the point and; finally, the key point on the curve of the output test, includes a proportional limit point, upper and lower yield point, and the broken breakpoint of the highest fulfilled stress and strain and display the critical point. 4. Or 3 said one adopts the curve translation process method of deformation curve of the material load according to Claim 1 or 2, characterized in that wherein the curve of the point at the upper end of the initial straight line segment PP straight line in respect to the origin of coordinates is proportional to force and deformation of the Hooke's law and intuitive geometric range of application. 5. Or 3 said one adopts the curve translation process method of deformation curve of the material load according to Claim 1 or 2, characterized in that wherein the non-proportion of parallel lines extending stress determines the step of mechanical testing standards should be: from the origin of coordinates to the right of horizontal axis to determine the length of the extension of the point of the two, from the point of initial straight line to the pair of two-end connection with the parallel lines intersecting the curve of the, intersection point is to ascertain, in order to point of intersection is the longitudinal force divided by the cross-sectional area of the test piece is non-proportionally elongation stress, the intersection point for the horizontal coordinate, in other words the bars, by the extension of the SPAN, to obtain non-proportionally elongation strain. 6. Or 3 said one adopts the curve translation process method of deformation curve of the material load according to Claim 1 or 2, characterized in that the key point on the curve includes a proportional limit point, upper and lower yield point, and the highest breakpoint fulfilled, their deformation value must add-ΔX, is the only accurate value. 7. The a method for processing by adopting curve translation method of deformation curve of the material load according to Claim 1, characterized in that the method for processing by adopting curve translation method of deformation curve of the material load can be used for the tensile test, it also can be used for compression, bending, torsion and shear when the translation of the test curve as well as strength and deformation accurately corrected of performance parameters. 8. The a method for processing by adopting curve translation method of deformation curve of the material load according to Claim 1, characterized in that the steps used in a material testing machine, which comprises a test machine main body, test data acquisition and processing system and display, the material testing machine after the completion of material testing, test data acquisition and processing system automatically adopts the above-mentioned method to obtain deformation curve of the material load, and displayed in the display unit.