关于杆件组合变形的应变能  

On strain energy of combined-deformations bar

作　　者：任倩[1] 应祖光[2] 

机构地区：[1]浙江科技学院土木工程学系,浙江杭州310023 [2]浙江大学力学系,浙江杭州310027

出　　处：《浙江科技学院学报》2004年第2期98-100,共3页Journal of Zhejiang University of Science and Technology

摘　　要：在线弹性、小变形等基本假设条件下,由于杆件应变能与外作用力不成线性关系,所以杆件组合变形的应变能能否表示为各相应基本变形的应变能之和是个值得讨论的问题。本文从双向弯曲、拉弯、扭弯等组合变形方面详细推导了应变能公式,得出组合应变能为各基本应变能之和。Scince the strain energy of the bar is nonlinear with the external force on condition that the primary assumption of the linear elasticity and micro-deformation, it is worth discussing whether strain energy of the combined deformation bar is equal to the sum of strain energy of the corresponding primary deformation. In this paper, the formula of strain energy is derived in detail form the combined deformation like bidirectional bending, tension-bending and torsion-bending deformation. Result illustrates that strain energy of the combined deformation bar could be equal to the sum of each strain energy of the primary deformation.

关 键 词：组合变形 应变能 杆件 材料力学 扭转 弯曲 

分 类 号：TB301[一般工业技术—材料科学与工程] O347[理学—固体力学]