颗粒轮胎与颗粒地面模型  

Model of Granule Tyre and Granule Ground

作　　者：方俊[1] 闫民[1] 许立峰[1] 

机构地区：[1]北京林业大学工学院,北京100083

出　　处：《科技导报》2007年第24期69-72,共4页Science & Technology Review

基　　金：国家自然科学基金项目(10572027)

摘　　要：在对车辆地面力学中轮胎和地面模型研究的基础上,针对各种模型的局限性,运用散体单元法(DEM)理论,建立了轮胎与地面的系统力学模型,提出了颗粒轮胎与颗粒地面概念;对轮胎在选定地面上行驶时,表层土壤的应力分布进行了模拟分析计算,并将计算结果与相关文献的研究成果进行了比较分析。Based on the model of the ground and tyre in terra-mechanics, and due to the limitation of various models, the concept of the granule tyre and granule ground are put forward, the systematic mechanics model of tyre and ground with the Discrete Element Method （DEM） is established. The stress distributions of top soil while tyre is going on the selected ground is simulated and analysed. The result is comparatived with the results of relevant references.

关 键 词：散体单元法 颗粒轮胎 颗粒地面 本构关系 数值模拟 

分 类 号：U461[机械工程—车辆工程] U463.341[交通运输工程—载运工具运用工程]