压电双材料界面裂纹动断裂分析的扩展有限元法

来源 :第十届南方计算力学学术会议 | 被引量 : 0次 | 上传用户:pscc33
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  本文采用扩展有限元法分析含界面裂纹的压电双材料在力-电冲击加载下的动断裂性态,裂纹面考虑为无面力、不渗透且绝缘情况。基于单位分解法的思想在常规有限元法位移和电势逼近中引入一些合适的加强函数以反映裂纹和界面的存在,从而实现网格离散时不需要考虑裂纹和界面位置。基于各向同性双材料界面裂纹裂尖加强函数,提出了能考虑力-电因素分析压电双材料界面裂纹的裂尖加强函数。采用互作用积分法推导了广义动强度因子计算公式。算例分析表明本文方法获得的广义动强度因子与参考解吻合得很好。最后,分析了极化方向、界面倾角和冲击荷载等对广义动强度因子的影响。
其他文献
Mechanochemistry is gaining considerable popularity throughout the world.More and more groups join thefield and the number of reports on successful "dry and gre
会议
  I will explain the conservation relations for the first occurrence of local theta correspondence,as first conjectured by Kudla and Rallis.This is a joint wo
会议
  Let n be an any integer.It is well known that there are infinitely many imaginary quadratic fields with ideal class group having a subgroup isomorphic to Z
会议
空间飞网捕获是实现高轨非合作失稳目标抓捕的有效手段,对于被捕获目标有较强的适应性,空间绳网的结构设计,捕获策略的制定,均需要空间飞网抛射展开、捕获收口、拖曳离轨等过
会议
  Construction of bonds through the simple,economical,and environmentally friendly mechanochemical(MC)route is of considerable interest in modern synthetic ch
  The McKay correspondence says that for a finite group G acting on a variety M,a certain resolution of the quotient singularity M/G can be realised as a modu
会议
本文构造了一类用于求解指标-3的微分-代数方程的状态空间法.利用对约束方程雅可比矩阵的LU分解将出现在微分-代数方程中的系统坐标分为独立坐标与非独立坐标.对于独立坐标,
会议
  There has been considerable interest in understanding Cox rings of del Pezzo surfaces.The main problem was the Batyrev-Popov conjecture which describes the
会议
  In this paper,the attenuation coefficient of coherent SH waves in random porous material with uniformly randomly distributed elliptical cavities of differen
会议
  In this study,Ab initio(first-principles)density functional theory(DFT)calculations are performed within the local density approximations(LDA)to investigate
会议