复合材料空间薄壁梁的有限元分析模型

基金项目: 国家自然科学基金(10272012) 和教育部新世纪人才计划资助项目(NCET-04-0169)

详细信息

Finite element model for spatial thin-walled composite beams

School of Aeronautics Science and Engineering| Beijing University ofAeronautics and Astronautics| Beijing 100083| China

摘要

摘要: 在剪切梁理论的基础上, 采用9 节点平面单元模拟梁任意截面形状; 采用27 节点体单元, 模拟截面出平面外的二次翘曲位移, 从而建立了空间复合材料任意截面薄壁梁考虑二次翘曲的有限元分析模型。根据本文中导出的复合材料有限元模型编制了相应的分析计算程序。算例表明: 本文中建立的复合材料薄壁梁模型正确, 可以用于考虑多种耦合影响因素作用下复杂结构空间薄壁复合材料梁的有限元分析计算。
- 复合材料 /
- 剪切 /
- 翘曲 /
- 空间梁 /
- 模型
Abstract: Based on the shear flexible theory , a finite element model was developed to take into account the quadratic warping effect of arbit rary cross-sections of spatial thin-walled composite beams , taking the 9-node plane element to simulate an arbit rary beam cross-section and the 27-node solid element to simulate the quadratic out-of-planewarping displacement . According to the model obtained in this paper , the interrelated spatial composite beams calculating program was written out . The numerical examples show that the analytical model derived in the paper is correct , which can be used in the analysis of complex spatial thin2walled composite beams under several coupling loads.
- composite beams /
- shear /
- warping /
- spatial beams /
- model