摘要
本文依据弹性体状态唯一性原理,提出了用边界变换法来解决边界元应力分析中边界近旁区域应力值的准确计算问题,从而避免了积分核的奇异性及边界离散化的不利影响。文中的两个简单的算例说明,边界交换法可在不改变原有边界单元划分的条件下,在边界近旁区域获得与理论值十分接近的计算结果。
Based on solitariness principle of the state of elastic bodies,a method of boundary transformation for stress analysis with boundary element method is proposed for the precise calculation of the stresses in the domain near the boundary, so as to avoid the unfavourable influence of the singularity of integral kernals and the discretization of the boundary on them. It shows through the two examples given in this paper that the results in those area computed using the method of boundary transformation are fairly consistent with the theoretical ones,without changing the way of boundary discretizaton.
出处
《甘肃工业大学学报》
1990年第1期53-57,共5页
Journal of Gansu University of Technology
关键词
应力分析
边界元
边界变换法
应力
stress, boundary, transformation, boundary element, stresses near the boundary
