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Ziwen Li, Xiangyuan Zeng, Tongge Wen and Yonglong Zhang
The discrete element method (DEM) is usually applied in analyzing the scientifical origin/evolution of the asteroids and the landing/sampling of the regolith. In order to manage the contact between the non-spherical granules, the Polygonal Contact Model ...
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Rui Zhou and Xianghong Xu
The significant increase in the speed of high-speed trains has made the optimization of pantograph?catenary parameters aimed at improving current collection quality become one of the key issues that urgently need to be addressed. In this paper, a method ...
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Mengzhen Wu, Xianghong Xu, Haochen Zhang, Rui Zhou and Jianshan Wang
As a traditional numerical simulation method for pantograph?catenary interaction research, the pantograph?catenary finite element model cannot be applied to the real-time monitoring of pantograph?catenary contact force, and the computational cost require...
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Fangyuan Li, Zhenwei Guo, Peifeng Wu and Yunxuan Cui
This study proposes two curves that depict the vehicle?bridge contact force in a novel transportation system named AERORail, which is a lightweight cable-supported structure in which the rails and the prestressed cable form the load bearing system. Based...
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Xianrui He, Xingyuan Wang, Chonglin Xu and Yue Wang
Tiny interference components play an important role in the aerospace and instrumentation fields. Contact stress and connection force are important factors in evaluating the reliability and service life of components. In this study, the ultrasonic method ...
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Qingteng Yuan, Ming Xiao, Ci Kong and Kaicheng Wang
The foundation of a seismic safety assessment of cross-fault hydraulic tunnels is an acceptable and accurate seismic response. A dynamic contact force algorithm that may take into consideration the interaction between the fault?surrounding rock?lining st...
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Jicheng Huang, Kunpeng Tian, Aimin Ji, Bin Zhang, Cheng Shen and Haolu Liu
Finite element numerical simulations provide a visual and quantitative approach to studying the interaction between rigid mechanical components and flexible agricultural crops. This method is an important tool for the design of modern agricultural produc...
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Zhiyi Wang, Chuanzhi Chen, Jinbao Chen and Guang Zheng
In this paper, a novel 3D (three-dimensional) soft-landing dynamic theoretical model of a legged lander is developed in detail as well as its numerical solution process. The six degrees of freedom motion (6-DOF) of the base model of the lander with mass ...
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Fangyuan Li, Zhenwei Guo, Yunxuan Cui and Peifeng Wu
The flexible structure of the new type of aerial track studied in this paper is formed by strings and tracks, which have obvious dynamic characteristics under the action of vehicle moving loads and is also an important factor affecting its performance. T...
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Long Zhou, Qiu Dong, Jianqun Yu, Yang Wang, Yulong Chen, Mingwei Li, Wenjun Wang, Yajun Yu and Jun Yuan
An appropriate contact mechanics model and parameters are key to achieving accurate results in discrete element analyzis. This is necessary to predict the process of contact collision between the soil and maize seed during deposition. In this paper, the ...
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Qin Liu, Zhe Wang, Ning Zhang, Hongyu Zhao, Lei Liu, Kunpeng Huang and Xuguang Chen
The local scour around offshore pile foundations often seriously affects the normal operation of offshore wind power. The most widely used numerical simulation method in the study of local scour is the Euler two-fluid model (TFM). However, the contact ef...
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Zhihao Zhao, Mingliang Wu and Xiaohu Jiang
In agricultural engineering, the discrete element simulation of the operational structure, object of movement, and force has become a standard method of modern agricultural equipment design. The selection and development of an appropriate contact model a...
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Bo-Min Bae, Yeon-Soo Kim, Wan-Soo Kim, Yong-Joo Kim, Sang-Dae Lee and Taek-Jin Kim
In the field of agricultural machinery, various empirical field tests are conducted to measure design loads for the optimal design and implementation of tractors. However, conducting field tests is costly and time-consuming, with many constraints on weat...
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Rui Xu, Jing Zhang, Jiugen Wang, Zihui Wang, Lin Xi, Renjun Li and Hao Li
The determination of meshing force and the load sharing ratio of gear teeth is critical to predict the dynamic behavior or the load capacity of gear transmissions. In the previous literature, the dynamic meshing force is usually calculated based on the t...
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Qi Hong, Tianyi Zhou and Junde Qi
Polishing force is one of the key process parameters in the polishing process of blisk blades, and its control accuracy will affect the surface quality and processing accuracy of the workpiece. The contact mechanism between the polishing surface and flap...
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Qimin Gao, Lei Cheng, Renbing Wang, Mingjiang Chen, Weisong Zhao, Jingjing Fu and Zhenwei Wang
The mechanical properties of tomato stalk, relevant to the harvesting and crushing of tomato vines, significantly impact its harvesting quality and efficiency. Establishing a simulation model, which accurately mirrors these properties, is foundational fo...
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Jingyuan Yang, Huayu Duan, Linxiao Li, Edward Stewart, Junhui Huang and Roger Dixon
Defective droppers pose a significant threat to the performance of the contact between the train pantograph and railway catenary. In this paper, the impact of damaged droppers on the performance of pantograph?catenary interaction behaviour is analysed, a...
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Jingchao Zhao, Xiaoyu Wang, Chao Meng, Huitao Song, Zhong Luo and Qingkai Han
As a high-precision motion mechanism, the kinematics and dynamics of cascade thrust reverser are sensitive to the changes of nonlinear factors which are rarely considered in traditional dynamic modeling and optimization. In order to study the effect of n...
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Yunjung Jang, Hakgeun Kim and Kiweon Kang
Composite wind turbine blades may experience interlaminar damage, including adhesive failure, cracking, and interlaminar fracture failure, from manufacturing or external fatigue load. Among these, the adhesive failure of adhesive joints is critical. Ther...
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Long Zhang
The maximum contact force is one of the most important indicators for contact problems. In this paper, the configuration optimization is conducted to reduce the maximum contact force for a free-floating space robot capturing tumbling target. First, the d...
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