...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Finite Elements in Analysis and Design >Modelling of the stiffness evolution of truss core structures damaged by plastic buckling
【24h】

Modelling of the stiffness evolution of truss core structures damaged by plastic buckling

机译：塑性屈曲破坏的桁架核心结构刚度演化模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A finite element study based on 1D beam element model is performed in order to investigate the mechanical behavior of an elasto-plastic beam loaded in axial compression over its buckling limit. The mode of loading is related to the damage of truss-cored beams in truss-cored laminates. The analysis takes into account the effects of geometry and material properties. The results of the FEM analysis are used for developing a simple mechanical model based on the basic Euler-Bemoulli beam theory and accounts for the beam compressibility. The model uses phenomenological functions containing parameters related to the basic material and geometrical properties. The presented model is developed in the form of closed solution which does not require complex numerical methods or extensive parametric studies. Predictions of the compressive stiffness degradation of truss-cored composites are made with the proposed model and compared with the results of UEM simulations. The error of the stiffness prediction with respect to the FEM results is within 10% over a 5 fold range of stiffness. (C) 2015 Elsevier B.V. All rights reserved.
机译：进行基于一维梁单元模型的有限元研究，以研究弹塑性梁在轴向屈曲极限内承受轴向压缩时的力学行为。加载方式与桁架芯层压板中桁架芯梁的损坏有关。该分析考虑了几何形状和材料属性的影响。有限元分析的结果用于基于基本的Euler-Bemoulli梁理论开发简单的机械模型，并说明梁的可压缩性。该模型使用现象学函数，其中包含与基本材料和几何特性有关的参数。提出的模型以封闭解的形式开发，不需要复杂的数值方法或大量的参数研究。利用所提出的模型对桁架芯复合材料的压缩刚度退化进行了预测，并将其与UEM仿真的结果进行了比较。刚度预测相对于FEM结果的误差在刚度的5倍范围内在10％以内。 （C）2015 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号