等效铰结桁架单元  

EQUIVALENT TRUSS ELEMENTS FOR PLANE AND SPACE PROBLEMS

作　　者：吴方伯[1] 陈坚强[1] 尚守平[1] 

机构地区：[1]湖南大学土木工程学院,长沙410082

出　　处：《工程力学》2005年第2期84-88,42,共6页Engineering Mechanics

摘　　要：基于有限元基本思想,根据微元体与平面桁架单元或空间桁架单元应力、应变等效原则构造出一种更为简单适用的等效铰结桁架单元,理论分析和计算结果表明,用此模型来等效分析计算平面或空间应力问题是可行的,它能达到减少计算工作量,易于分析程序编制,方便数据后处理等目的,并能满足工程精度要求。A new equivalent truss element method, is proposed on the basis of stress/strain equivalence between a truss element and a micro unit. Theoretical analysis and numerical examples show that it is feasible to analyze plane or space stress problems. The proposed method is simpler than the usual finite element method, and easy to be computerized. It is found that the results using the method satisfy engineering precision requirements.

关 键 词：有限元 微元体 等效铰结桁架单元 平面应力 空间应力 

分 类 号：TU323[建筑科学—结构工程]