Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 4. Отображено 4.
21-07-2023 дата публикации

Asphalt pavement fatigue life estimation method for automatic driving formation

Номер: CN116467771A
Автор: MA TAO, LIU XINGKUN, CHEN FENG, CUI PEIDE, LI YAQI, ZHU JUNQING
Принадлежит:

The invention discloses an automatic driving formation-oriented asphalt pavement fatigue life estimation method, which comprises the following steps of: firstly, carrying out finite element modeling on a typical asphalt pavement structure, and realizing numerical simulation of an environment temperature field; then, the tire grounding shape is simplified into a circular double-wheel load, and moving load application is achieved according to the axle load characteristics of a typical truck; then carrying out combined working condition simulation according to the vehicle speed, vehicle distance and other characteristics of the automatic driving formation to obtain a maximum longitudinal tensile strain oscillogram of the bottom of the asphalt layer; mechanical response waveform characteristics are analyzed, and independent shape parameters are obtained through a main analytic hierarchy process; equivalent damage under automatic driving formation driving is calculated based on the Miner linear ...

Подробнее
Номер записи: 1
04-08-2023 дата публикации

Road performance monitoring and pavement life estimation method based on embedded sensor

Номер: CN116539856A
Автор: CHEN FENG, WU JIANYI, WANG NING, MA TAO, CUI PEIDE, ZHU JUNQING
Принадлежит:

The invention discloses a road performance monitoring and pavement life estimation method based on an embedded sensor, and belongs to the field of intelligent monitoring of pavement structure health status. According to the road structure performance monitoring method, the multi-integrated intelligent particle sensor is utilized, and environmental information such as stress, strain and acceleration mechanical response, temperature, humidity, rotation angle and intelligent particle sensor orientation can be monitored in real time. According to the pavement life estimation method, an elastic layered theory system and an improved genetic algorithm are used for processing monitoring data from an intelligent particle sensor, dynamic modulus of each layer of a pavement structure is obtained through back calculation, and the number of remaining rut standard axle load use times and the number of remaining fatigue standard axle load use times of the pavement structure are calculated; the pavement ...

Подробнее
Номер записи: 2
14-07-2023 дата публикации

Tough geopolymer curing material for improving performance of silt soft soil and preparation method of tough geopolymer curing material

Номер: CN116425461A
Автор: XU GUANGJI, ZHAO YAPENG, MA TAO, CHEN SIYU, FAN JIANWEI, CUI PEIDE, WANG JIANHUA
Принадлежит:

The invention relates to a tough geopolymer curing material for improving the performance of silt soft soil and a preparation method, the tough geopolymer curing material is used as a soil curing agent for improving the performance of the silt soft soil, and when the silt soft soil accounts for 480-600 parts by mass, the tough geopolymer curing material comprises the following components in parts by mass: 120-150 parts of slag, 200-240 parts of fly ash and 2-10 parts of polyacrylonitrile fiber. 120 to 140 parts of an alkaline activator and 150 to 170 parts of water; the slag and the fly ash are used as main raw materials, under the excitation condition, generation of an N-A-S-H gel phase, a C-S-H gel phase or an S-A-H gel phase is promoted, the mechanical property of a geopolymer is enhanced, meanwhile, a proper mixing amount of polyacrylonitrile fiber is added, the toughness of the geopolymer improved sludge solidified soil can be enhanced, and compared with Portland cement, the cement ...

Подробнее
Номер записи: 3
09-05-2023 дата публикации

Safety evaluation method and system for automatic driving of expressway vehicles

Номер: CN116090108A
Автор: MA TAO, LI YAQI, CHEN FENG, LIU KEXIN, CUI PEIDE, LIU XINGKUN, ZHU JUNQING
Принадлежит:

The invention discloses a safety evaluation method and system for automatic driving of a highway vehicle, and belongs to the technical field of highway safety, and the system comprises an automatic driving behavior model layer, a data layer, an evaluation layer and a display layer. Wherein the simulation model layer comprises a BIM technology-based road three-dimensional model, a dynamics-based vehicle simulation model and an automatic driving local tracking algorithm model, and the database layer comprises road parameters and vehicle dynamics response data. The evaluation layer comprises an accident probability evaluation index based on an accident tree model and an accident severity evaluation index based on an analytic hierarchy process, and the display layer comprises a road three-dimensional model display module, a vehicle driving animation module and a dangerous road section identification module. Vehicle driving data under various working conditions are obtained based on an automatic ...

Подробнее
Номер записи: 4