计算力学学报2018，Vol.35Issue(1)：28-34,7.DOI:10.7511/jslx20161028002
基于边光滑有限元法的加筋板静力和自由振动分析
Static and free vibration analysis of stiffened plates by ES-FEM using triangular element
摘要
Abstract
In this paper,the edge-based smoothed finite element method (ES-FEM) is presented for static and free vibration analysis of stiffened plates.In the ES-FEM model,the edge-based strain smoothing technique (E-SST) is employed to smoothen the original strain field.Due to the softening effect provided by the E-SST,the original overly-stiff FEM model can be properly softened and the stiffness of the obtained ES-FEM model is closer to the exact system stiffness than that of the FEM.Owing to the good adapt ability of the triangular element,a triangular mesh is used to discretize the problem domain.In order to avoid the transverse shear locking caused by the low-order Reissner-Mindlin plate element,the discrete shear gap technique for triangular element (DSG3) is employed here.From several numerical examples,it is demonstrated that the proposed ES-FEM possesses faster convergence property and higher computational efficiency,and can also provide more accurate solutions than the FEM for stiffened plates.关键词
加筋板/静力分析/自由振动分析/边光滑有限元/离散剪切间隙技术Key words
stiffened plates/static analysis/free vibration analysis/edge-based smoothed finite element method(ES-FEM)/discrete shear gap technique(DSG)分类
数理科学引用本文复制引用
游翔宇,郑文成,李威,柴应彬,程聪..基于边光滑有限元法的加筋板静力和自由振动分析[J].计算力学学报,2018,35(1):28-34,7.基金项目
国家自然科学基金面上基金(51579112)资助项目. （51579112）
