受扭圆环膜褶皱影响因素的数值分析  

Numerical analysis of wrinkle-influencing factors of circular membrane under torsional loading

作　　者：王晓峰[1] 刘启军 杨庆山[2] WANG Xiaofeng;LIU Qijun;YANG Qingshan(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;School of Civil Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]重庆大学土木工程学院,重庆400044

出　　处：《北京交通大学学报》2019年第6期85-91,共7页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金(51778041,51278049)~~

摘　　要：薄膜广泛应用于土木工程中的大跨建筑结构以及航空航天领域的空间可展结构.由于其厚度薄、抗弯刚度小,在压应力作用下会形成褶皱.褶皱变形对薄膜结构的表面精度以及力学特性产生重要影响.为了深入认识薄膜的褶皱行为,探究褶皱因素的影响作用及其影响机理,以受扭圆环膜为研究对象,采用基于板壳稳定理论的褶皱模型,借助有限元方法,深入分析了褶皱变形特征随边界条件、预张力、薄膜厚度以及材料常数等因素的变化规律.Membrane is widely applied in long-span building structures in civil engineering and spatial deployable structures in aerospace engineering.Membrane is prone to wrinkle under compressive stress due to its low thickness and weak bending stiffness,and wrinkling deformation would significantly affect its surface accuracy and mechanical properties.With the aim of better understanding the wrinkling behavior and the effects and mechanisms of the wrinkle-influencing factors,this paper numerically analyzes the circular membrane under torsion using finite element model based on the stability theory of plates and shells,and explores how the characteristic parameters of wrinkles vary with boundary conditions,prestress,thickness and material constant.

关 键 词：圆环膜 有限元分析 板壳稳定理论 褶皱影响因素 褶皱特征参数 

分 类 号：TU383[建筑科学—结构工程]