摘要
为了求解各向异性接合材料界面端部奇异性应力场,建立了一种新型杂交元模型。该模型的独特之处在于:基于有限元特征法得到的奇异性场数值特征解建立了一种新型界面端奇异单元。通过算例证明,新型杂交元模型能够利用较少的单元数获得较为精确的数值结果。当前模型应用范围广泛,能够用于复杂结构的界面端部场求解。
In order to solve the singular stress fields in tips of bonded dissimilar anisotropic materials, a novel hybrid element model is established. The characteristic of this model is : a new interface edge singular element model is derived based on the numerical fundamental solutions obtained from the finite element eigensolutions method. Benchmark examples show present model converges to existing solutions with fewer elements. Present model has a strong applicability, and can be used to deal with more complex interface edge problems.
出处
《南昌大学学报(理科版)》
CAS
北大核心
2007年第3期236-241,共6页
Journal of Nanchang University(Natural Science)
基金
国家自然科学基金资助项目(10362002
10662004)
江西省教育厅科研项目(2007-198)
关键词
奇异性场
界面端
有限元特征法
奇异单元
杂交元
singular fields
interface edge
finite element eigenanalysis method
singular element
hybrid element
作者简介
平学成(1975-),男,讲师,博士.