压电桁架结构的稳定性及有限元分析方法  

The Buckling Stability and Finite Element Analysis Method of Piezoelectric Trusses

作　　者：赵国忠[1] 顾元宪[1] 

机构地区：[1]大连理工大学,大连116024

出　　处：《应用力学学报》2002年第1期127-130,共4页Chinese Journal of Applied Mechanics

基　　金：国家重点基础研究专项经费资助 (G19990 32 80 5 )

摘　　要：从力的平衡方程出发 ,考虑机电耦合效应 ,推导了含压电材料的桁架结构稳定性的有限元方程。通过数值算例分析表明 ,机电耦合效应对桁架结构的稳定性影响较大 ,而电压对结构稳定性的影响相对较小 。Considering mechanical electric coupling effect,the paper derived the piezoelastic finite element equations of buckling analysis for piezoelec trictruss structures from the basis equilibriume quation.Numerical calculation results given in the paper have shown that the mechanical electric coupling effect can increase the buckling stability of piezoelec trictrusses noticeably,but the external voltage can only affect the buckling charac teristics slightly.The optimum distribution of the piezoelectric bars can improve buckling characteristics of truss structures effectively.

关 键 词：压电桁架结构 稳定性 有限元分析方法 机电耦合 智能结构 

分 类 号：TB381[一般工业技术—材料科学与工程] O343.9[理学—固体力学]