基于耦合场分割算法的ANSYS二次开发及其应用

耦合场分割算法是当前研究的热点之一。本文首先对比研究了瞬态热传导方程和孔压增长消散方程,提出了一种适用于ANSYS二次开发的分割算法,并对2种不同的预测值计算模式对计算稳定性的影响进行了分析。然后,据之对ANSYS温度—结构耦合场模块进行了开发,形成了岩土工程有效应力计算模块。数值实验表明,这种方法具有较高的计算精度和良好的计算稳定性,并且能够充分利用现有程序资源,具有较高的工程应用价值。

ANSYS redevelopment and its application based on partitioned solution procedures of coupled mechanical systems

Research of partitioned solution procedures of coupled mechanical systems is a hot subject at present.After comparing the transient heat conduction equation with the pore pressure generation-dissipation equation,this paper presents a new partitioned method to redevelop the ANSYS,and then discusses its computational stability when two kinds of prediction methods are adopted respectively.Subsequently,based on this approach,an effective stress dynamic analysis module of ANSYS is developed from the primary thermal-structure analysis module.As demonstrated by the numerical examples,this method,besides its adequate use of available program resources,could also give comparatively precise results and fine computational stability and is of great value in engineering calculation.