摘要
文章基于奇异点附近的位移场和奇异应力场,提出了一种利用普通的数值分析结果确定单应力强度因子的数值方法和提高应力强度因子求解精度的结点选取方法。利用有限元软件MSC/Nastran对 型和 型平面裂纹问题进行了具体计算。计算结果表明,文章所提出的方法具有通用性强、精度高的特点,便于实际工程应用。
Based on the displacement and singular stress fields near the singular point, a numerical method is presented to determine the single stress intensity factor by using the results of common numerical analysis and a method for selecting the nodes is provided to improve the solving accuracy of the stress intensity factor. The plane crack problems of the modeⅠand modeⅡare analyzed with the finite element program named MSC/Nastran. The calculations show that the accuracy of solution is much higher and the presented method is general and convenient for the application in engineering.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
2003年第4期546-549,共4页
Journal of Hefei University of Technology：Natural Science
