摘要
简要介绍了轴对称问题的概念和特征,列举了其基本方程和优点,将三维问题转化为二维问题,并且用一个正方形轴对称模型利用ANSYS软件建立四分之一模型,施加约束和载荷进行了有限元分析。通过与理论解的对比,发现随着网格的加密,有限元结果不断趋近于理论解,但在网格加密到一定程度1000×1000时,程序内存不够会导致崩溃,若充分利用模型的轴对称性能则可大大减少有限元分析的计算量。
The concept and characteristics of axisymmetric problems are introduced, its basic equations and advantages are cited. The three-dimensional problem is transformed into a two-dimensional problem, and a quarter model is built using a square axisymmetric model in ANSYS software. The load and constraints are imposed on the quarter model to carry out finite element analysis in ANSYS. It is found that the results of the finite element trends toward to the theoretical solution with the increased mesh density. When the mesh density is 1000 ×1000, the program may lead to insufficient memory, so the axisymmetric model can greatly reduce the amount of computations in finite element analysis.
出处
《机械工程师》
2014年第4期126-128,共3页
Mechanical Engineer
