...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Solids and Structures >Dynamic stability analysis of composite plates including delaminations using a higher order theory and transformation matrix approach
【24h】

Dynamic stability analysis of composite plates including delaminations using a higher order theory and transformation matrix approach

机译：使用高阶理论和转换矩阵方法对包括分层的复合板的动态稳定性进行分析

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 refined higher order shear deformation theory is used to investigate the dynamic instability associated with composite plates with delamination that arc subject to dynamic compressive loads. Both transverse shear and rotary inertia effects are taken into account. The theory is Capable of modeling the independent displacement field above and below the delamination, All stress free boundary conditions at free surfaces as well as delamination interfaces are satisfied by this theory. The procedure is implemented using the finite element method. Delamination is modeled through the multi-point constraint approach using the transformation matrix technique. For validation purposes. the natural frequencies and the critical buckling loads are computed and compared with three-dimensional NASTRAN results and available experimental data. The effect of delamination on the critical buckling load and the first to instability regions is investigated for various loading conditions and plate thickness, As expected, the natural frequencies and the critical buckling load of the plates with delaminations decrease with increase in delamination length. Increase in delamination length also causes instability regions to be shifted to lower parametric resonance frequencies. The effect of edge delamination on the static and dynamic stability as x ell as of delamination growth is investigated. (C) 2002 Elsevier Science Ltd. All rights reserved. [References: 16]
机译：精细的高阶剪切变形理论用于研究与承受动态压缩载荷的分层复合板相关的动态不稳定性。同时考虑了横向剪切和旋转惯性效应。该理论能够对分层之上和之下的独立位移场进行建模，该理论满足自由表面上的所有无应力边界条件以及分层界面。该过程使用有限元方法实现。使用转换矩阵技术通过多点约束方法对分层进行建模。用于验证目的。计算固有频率和临界屈曲载荷，并将其与三维NASTRAN结果和可用的实验数据进行比较。研究了在各种载荷条件和板厚下，分层对临界屈曲载荷和不稳区域的影响。正如所期望的，随着分层长度的增加，具有分层的板的固有频率和临界屈曲载荷会降低。分层长度的增加也会导致不稳定区域移动到较低的参数共振频率。研究了边缘分层对分层生长时静态和动态稳定性的影响。 （C）2002 Elsevier ScienceLtd。保留所有权利。 [参考：16]

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