摘要
界面应力元法在均质各向同性材料线弹性力学分析方面的研究已较为成熟,而对于正交各向异性尤其是主轴随应力变化的正交各向异性材料的线性、非线性分析及材料屈服判据的研究尚未见报道.结合界面应力元法界面应力分布的特点,依据静力平衡条件,建立了界面一点的应力状态的近似计算方法,界面一点的应力状态的获知将拓宽界面应力元法在非线性分析领域的应用.数值算例表明,近似计算精度高可以作为非线性分析的应力判据.
Based on the interface stress element model for discontinuous medium of deformable body, a new numerical method is proposed to calculate the tangent stress at any given point of the interface by using equilibrium condition. The tangent stress obtained from the method show the stress state of any point of the interface and hence broaden the application of the interface stress element method in the field of the nonlinear analysis. Numerical examples given in this paper also indicate that the algorithm is feasible and has high calculation precision.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2005年第4期455-458,共4页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(50108013)
