A high-fidelity approach for vehicle mobility simulation: Nonlinear finite element tires operating on granular material |
| |
| Institution: | 1. Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706-1572, USA;2. Department of Mechanical and Industrial Engineering, University of Iowa, Iowa City, IA 52242, USA;3. U.S. Army Tank Automotive Research Development and Engineering Center, Warren, MI 48397-5000, USA;1. Division of System Research, Faculty of Engineering, Yokohama National University, Tokiwadai 79-5, Hodogaya-ku, Yokohama 240-8501, Japan;2. Exponent Inc., Natick, MA 01760, USA;3. Laboratory for Manufacturing and Productivity, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;1. School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou 510640, China;2. Technology Center of Dongfeng Motor Group Co., LTD, Wuhan 430058, China;1. Advanced Vehicle Dynamics Laboratory (AVDL), Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States;2. Center for Tire Research (CenTiRe), Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States;1. School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China;2. Department of Systems Innovation, The University of Tokyo, Japan |
| |
| Abstract: | Assessing the mobility of off-road vehicles is a complex task that most often falls back on semi-empirical approaches to quantifying the vehicle–terrain interaction. Herein, we concentrate on physics-based methodologies for wheeled vehicle mobility that factor in both tire flexibility and terrain deformation within a fully three-dimensional multibody system approach. We represent the tire based on the absolute nodal coordinate formulation (ANCF), a nonlinear finite element approach that captures multi-layered, orthotropic shell elements constrained to the wheel rim. The soil is modeled as a collection of discrete elements that interact through contact, friction, and cohesive forces. The resulting vehicle/tire/terrain interaction problem has several millions of degrees of freedom and is solved in an explicit co-simulation framework, built upon and now available in the open-source multi-physics package Chrono. The co-simulation infrastructure is developed using a Message Passing Interface (MPI) layer for inter-system communication and synchronization, with additional parallelism leveraged through a shared-memory paradigm. The formulation and software framework presented in this investigation are proposed for the analysis of the dynamics of off-road wheeled vehicle mobility. Its application is demonstrated by numerical sensitivity studies on available drawbar pull, terrain resistance, and sinkage with respect to parameters such as tire inflation pressure and soil cohesion. The influence of a rigid tire assumption on mobility is also discussed. |
| |
| Keywords: | Mobility Off-road vehicle dynamics Nonlinear finite element ANCF Discrete element method Co-simulation High-performance computing |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
