摘要
为研究大型履带支重轮与履带板间接触问题,基于赫兹接触理论建立了支重轮履带板的接触分析数学模型,并通过ABAQUS建立的支重轮履带板非线性接触有限元模型进行验证。在此基础上,应用所建立的数学模型探讨了载荷、几何参数对最大接触压力及接触椭圆的影响。结果表明:接触区域影响范围很小;最大接触压力在接触区域中心,并随着载荷、两接触面曲率变化呈非线性变化;接触椭圆随各曲率变化而变化,但椭圆离心率不随载荷变化。该研究可为大型履带支重轮和履带板设计提供参考。
A mathematic model of contact was established base on Hertz contact theory for researching the contact problem of huge crawler,and it was verified by the nonlinear contact finite element model using ABAQUS.Then relationships between load,geometry and contact pressure,contact ellipse were analyzed using the mathematic model.The results show that the influence scope of the contact area is small and the maximum equivalent stress occurs below the surface with a certain depth.The maximum contact pressure,which represents nonlinear variation with the load and the curvature of two contact interface,occurs in contact area center.Also,contact ellipse changes with the curvature,however the elliptical eccentricity does not vary with load.This study could provide a reference for huge crawler track wheel and track pad design.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2012年第17期51-56,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金项目:"非公路车辆防翻车主动安全技术研究"(No.51175216)
高等学校博士学科点专项科研基金(博导类)项目:"工程车辆主动防倾翻系统设计理论与控制技术"(No.20100061110014)
关键词
有限元法
数学模型
矿山机械
支重轮
履带板
赫兹理论
finite element method
mathematic model
mining equipment
track wheel
track pad shoe
Hertz theory
