一种用于复杂曲面间不计摩擦接触等效建模的新型单元及其应用  

NEW KIND OF ELEMENT USED FOR EQUIVALENT MODELING INF RICTIONLESS CONTACT PROBLEMS BETWEEN COMPLEX CURVING SURFACES AND ITS APPLICATION

作　　者：杨学贵[1] 曾攀[1] 

机构地区：[1]清华大学机械工程系,北京100084

出　　处：《机械强度》2005年第6期790-797,共8页Journal of Mechanical Strength

基　　金：高等学校博士学科点专项科研基金项目(20020003052)

摘　　要：工程结构中有一些具有双曲率半径的接触面,同时承受复杂的载荷工况。为避免由于双曲率曲面接触、单元形状畸变及其他力学难题等带来的收敛困难,提出一种只能承受压载荷的接触Link单元,用于分析在不计摩擦情况下的接触问题,采用等效建模的方法进行求解。同时对等效建模的方法进行详细的验证,为复杂结构分析提供一种新的有效方法。There are many double-curvature contact surfaces with complex load cases in engineering structures. To avoid the difficulties such as double-curvature contact, abnormality of the shape of elements and other complex problems, a compress-only Link element has been put forward. With equivalent modeling method, this kind of element can be used to solve frictionless contact problems. At the same time, the correctness of equivalent modeling method has been verified thoroughly. This new kind of element and equivalent modeling method provides an effective way to analyze complex structures.

关 键 词：有限元法 复杂曲面 接触Link单元 不计摩擦 等效建模 

分 类 号：O242[理学—计算数学] TB115[理学—数学]