首页> 外文会议>International Conference on Fracture and Damage Mechanics(FDM 2007); 20070717-19; Madeira(PT) >Crack-tip Stress Fields in FGMs under Anti-plane Shear Impact Loading Using the Non-local Theory
【24h】

Crack-tip Stress Fields in FGMs under Anti-plane Shear Impact Loading Using the Non-local Theory

机译:基于非局部理论的FGMs在反平面剪切冲击载荷作用下的裂纹尖端应力场

获取原文
获取原文并翻译 | 示例

摘要

A crack in an infinite plate of functionally graded materials (FGMs) under anti-plane shear impact loading is analyzed by making use of non-local theory. The shear modulus and mass density of FGMs are assumed to be of exponential form and the Poisson's ratio is assumed to be constant. The mixed boundary value problem is reduced to a pair dual integral equations through the use of Laplace and Fourier integral transform method. In solving the dual integral equations, the crack surface displacement is expanded in a series using Jacobi's polynomials and Schmidt's method is used. The numerical results show that no stress singularity is present at the crack tip. The stress near the crack tip tends to increase with time at first and then decreases in amplitude and the peak values of stress decreases with increasing the graded parameters.
机译:利用非局部理论,分析了无梯度功能梯度材料(FGM)在反平面剪切冲击载荷作用下的裂纹。 FGM的剪切模量和质量密度被假定为指数形式,泊松比被假定为恒定。通过使用拉普拉斯和傅立叶积分变换方法,将混合边值问题简化为一对对偶积分方程。在求解对偶积分方程时,使用Jacobi多项式将裂纹表面位移扩展为一系列,并使用Schmidt方法。数值结果表明,裂纹尖端不存在应力奇异点。裂纹尖端附近的应力起初倾向于随时间增加,然后振幅减小,并且应力的峰值随渐变参数的增加而减小。

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