摘要
研究磁电弹性体中螺型位错与唇口裂纹的相互作用。结合Muskhelishvili方法和干扰技术,在假定裂纹面具有不可渗透条件下得到磁电弹性体中由位错和唇口裂纹所诱导的应力场、电场和磁场的解析解。应用广义Peach-Koehler公式,得到作用在位错上的影像力。通过数值算例,得到场强度因子的变化规律及影像力和广义力随位错位置的变化规律。
Interreaction between a penetrating lip-shaped crack and a screw dislocation in magnetoelectroelastic media is investigated with Muskhelishvili techniques and perturbation technique. Analytic solutions for stress,magnetic induction and electric displacement caused by dislocation and lip-shaped crack in magnetoelectroelastic solid are derived. By using the generalized Peach-Koehler formula,image forces acting on a dislocation are calculated. Regularities of field intensity factors,generalized stress field and image force at different dislocation positions are obtained with numerical examples.
作者
郭怀民
赵国忠
姜丽娟
GUO Huaimin;ZHAO Guozhong;JIANG Lijuan(College of Mathematics Science,Baotou Teachers'College,Baotou,Inner Mongolia 014030,China;College of Education Science,Baotou Teachers'College,Baotou,Inner Mongolia 014030,China)
出处
《计算物理》
CSCD
北大核心
2022年第1期33-40,共8页
Chinese Journal of Computational Physics
基金
National Natural Science Foundation of China (11761054)
Research Project of Baotou Techers’College (BSYKJ2021-ZY03)。
