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	Determining wheel-soil interaction loads using a meshfree finite element approach assisting future missions with rover wheel design
	Contreras, Michael T. ; Peng, Chia-Yen ; Wang, Dongdong ; Chen, Jiun-Shyan ; Wang DD(王东东)
	2012
关键词	Computer simulation Deformation Finite element method Soils
英文摘要	Conference Name:AIAA Modeling and Simulation Technologies Conference 2012. Conference Address: Minneapolis, MN, United states. Time:August 13, 2012 - August 16, 2012.; American Institute for Aeronautics and Astronautics (AIAA); A wheel experiencing sinkage and slippage events poses a high risk to rover missions as evidenced by recent mobility challenges on the Mars Exploration Rover (MER) project. Because several factors contribute to wheel sinkage and slippage conditions such as soil composition, large deformation soil behavior, wheel geometry, nonlinear contact forces, terrain irregularity, etc., there are significant benefits to modeling these events to a sufficient degree of complexity. For the purposes of modeling wheel sinkage and slippage at an engineering scale, meshfree finite element approaches enable simulations that capture sufficient detail of wheel-soil interaction while remaining computationally feasible. This study demonstrates some of the large deformation modeling capability of meshfree methods and the realistic solutions obtained by accounting for the soil material properties. A benchmark wheel-soil interaction problem is developed and analyzed using a specific class of meshfree methods called Reproducing Kernel Particle Method (RKPM). The benchmark problem is also analyzed using a commercially available finite element approach with Lagrangian meshing for comparison. RKPM results are comparable to classical pressure-sinkage terramechanics relationships proposed by Bekker-Wong. Pending experimental calibration by future work, the meshfree modeling technique will be a viable simulation tool for trade studies assisting rover wheel design. 漏 2012 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
语种	英语
出处	http://dx.doi.org/10.2514/6.2012-4562
出版者	American Institute of Aeronautics and Astronautics Inc.
内容类型	其他
源URL	[http://dspace.xmu.edu.cn/handle/2288/85528]
专题	建筑土木－会议论文
推荐引用方式 GB/T 7714	Contreras, Michael T.,Peng, Chia-Yen,Wang, Dongdong,et al. Determining wheel-soil interaction loads using a meshfree finite element approach assisting future missions with rover wheel design. 2012-01-01.

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