中国科学院机构知识库网格系统: 检索

Excavation disturbance response of deep-buried tunnel with novel dynamic anisotropic mechanical model and failure degree index 期刊论文 OAI收割
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2025, 卷号: 158, 页码: 18
作者:

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收藏 | 浏览/下载：3/0 | 提交时间：2025/06/27

True triaxial disturbance test Mechanical parameter degradation Anisotropic mechanical model Disturbance fracture degree index Excavation response analysis

A Novel Dynamic Fractional Mechanical Model for Rock Fracture Under True Triaxial Static-Dynamic Combined Loading and its Engineering Application 期刊论文 OAI收割
ROCK MECHANICS AND ROCK ENGINEERING, 2024, 页码: 27
作者: Zheng, Zhi; Li, Ronghua; Li, Shaojun; Lu, Gaoming; Zhang, Qiang

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收藏 | 浏览/下载：3/0 | 提交时间：2025/06/27

True triaxial test Static-dynamic combined loading Static and dynamic damage Fractional mechanical model Disturbance fracture degree index

Microdynamic mechanical properties and fracture evolution mechanism of monzogabbro with a true triaxial multilevel disturbance method 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, 2024, 卷号: 34, 期号: 3, 页码: 385-411
作者: Zheng, Zhi; Deng, Bin; Liu, Hong; Wang, Wei; Huang, Shuling

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收藏 | 浏览/下载：2/0 | 提交时间：2025/06/27

True triaxial disturbance test Mechanical properties Fracture evolution mechanism Disturbance-induced damage evolution Failure mechanism and precursor

Intermittent disturbance mechanical behavior and fractional deterioration mechanical model of rock under complex true triaxial stress paths 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, 2024, 卷号: 34, 期号: 1, 页码: 117-136
作者: Zheng, Zhi; Xu, Hongyu; Zhang, Kai; Feng, Guangliang; Zhang, Qiang

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收藏 | 浏览/下载：1/0 | 提交时间：2025/06/27

True triaxial static and disturbance test Mechanical properties Failure mechanism and precursor Intermittent disturbance effect Fractional mechanical model

Probability Quantification of GSI and D in Hoek-Brown Criterion Using Bayesian Inversion and Ultrasonic Test in Rock Mass 期刊论文 OAI收割
ROCK MECHANICS AND ROCK ENGINEERING, 2023, 卷号: -, 期号: -, 页码: -
作者: Liu, Jian; Jiang, Quan; Dias, Daniel; Tao, Chen

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收藏 | 浏览/下载：26/0 | 提交时间：2023/08/02

Bayesian method Ultrasonic testing Hoek-Brown failure criterion Rock mass mechanical parameter Disturbance factor

Estimating the geological strength index and disturbance factor in the Hoek-Brown criterion using the acoustic wave velocity in the rock mass 期刊论文 OAI收割
ENGINEERING GEOLOGY, 2022, 卷号: 306
作者: Xia, Kaizong; Chen, Congxin; Wang, Tianlong; Zheng, Yun; Wang, Yue

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收藏 | 浏览/下载：16/0 | 提交时间：2023/08/02

Hoek-Brown failure criterion Rock mass mechanical parameter Acoustic wave velocity Disturbance factor Geological strength index

Quantification of the GSI and D values in the Hoek-Brown criterion using the rock quality designation (RQD) and discontinuity surface condition rating (SCR) 期刊论文 OAI收割
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2022, 卷号: 81, 期号: 1, 页码: 21
作者: Xia, Kaizong; Chen, Congxin; Wang, Tianlong; Pang, Hansong; Liu, Xuanting

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收藏 | 浏览/下载：141/0 | 提交时间：2022/02/17

Hoek-Brown criterion Rock mass mechanical parameters Rock quality designation Surface condition rating Disturbance factor Geological strength index

A New Mechanical Resonance Suppression Method for Large Optical Telescope by Using Nonlinear Active Disturbance Rejection Control 期刊论文 OAI收割
IEEE Access, 2019, 卷号: 7, 页码: 94400-94414
作者: Li, Xin; Zhou, Wenlin; Luo, Jun

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收藏 | 浏览/下载：27/0 | 提交时间：2021/05/06

Mechanical resonance suppression active disturbance rejection control (ADRC) acceleration feedback control (AFC) nonlinear tracking differentiator (NTD) optical telescope

Design of motion adjusting system for space camera based on ultrasonic motor (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者: Sun Z.

收藏 | 浏览/下载：94/0 | 提交时间：2013/03/25

Drift angle is a transverse intersection angle of vector of image motion of the space camera. Adjusting the angle could reduce the influence on image quality. Ultrasonic motor (USM) is a new type of actuator using ultrasonic wave stimulated by piezoelectric ceramics. They have many advantages in comparison with conventional electromagnetic motors. In this paper some improvement was designed for control system of drift adjusting mechanism. Based on ultrasonic motor T-60 was designed the drift adjusting system which is composed of the drift adjusting mechanical frame the ultrasonic motor the driver of Ultrasonic Motor the photoelectric encoder and the drift adjusting controller. The TMS320F28335 DSP was adopted as the calculation and control processor photoelectric encoder was used as sensor of position closed loop system and the voltage driving circuit designed as generator of ultrasonic wave. It was built the mathematic model of drive circuit of the ultrasonic motor T-60 using matlab modules. In order to verify the validity of the drift adjusting system was introduced the source of the disturbance and made simulation analysis. It designed the control systems of motor drive for drift adjusting system with the improved PID control. The drift angle adjusting system has such advantages as the small space simple configuration high position control precision fine repeatability self locking property and low powers. It showed that the system could accomplish the mission of drift angle adjusting excellent. 2011 SPIE.

Contact-impact analys with clearance hinge in flexible multi-body system (EI CONFERENCE) 会议论文 OAI收割
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
Ge M.; Jia H.; Liu B.

收藏 | 浏览/下载：56/0 | 提交时间：2013/03/25

Hinge in mechanical systems exist small clearance and contact deformation After consideration of flexible components cause the system to the wear and tear impact force reduced at the clearance noise contact time increased vibration contact-impact areas expand and clearance also caused disturbance of the rod angular velocity of the linkage. 2011 IEEE. reliability reduce or even failure[1]. Therefore the hinge clearance and the impact of flexible components in kinetic models should be considered. In this paper a nonlinear spring-damper hinge clearance model is considered to establish mechanical system structure of dynamic equations[46] through a four-bar linkage hinge with multi-clearance rotation of ADAMS dynamic simulation for dynamics simulation study. Simulation results show that hinge clearance and link flexible in Four-link mechanism dynamics have a great impact on performance: connection with the clearance lead to pin holes to produce a series of collisions and a larger initial impact force