基于UG预处理的ANSYS有限元分析方法

为克服大型复杂构件使用ANSYS进行有限元分析时实体模型建立过程中的困难,将计算机辅助设计软件UG与有限元分析软件ANSYS结合起来,在UG中完成实体模型的创建、有限元模型的生成、材料属性的设置以及边界条件和载荷的加载等预处理工作,并生成解算文件.然后将解算文件直接导入ANSYS软件中进行求解,克服了UG实体模型导入ANSYS后网格划分困难、UG有限元模型导入ANSYS后预处理工作无法展开的缺点.实际算例表明,文中方法发挥了UG功能完备的建模优势及ANSYS强大的解算功能,并充分利用了解算文件的可修改性和ANSYS软件的开放性,使分析的可行性与精确性达到最大的统一,为大型复杂结构的有限元分析开辟了新途径.

The ANSYS Finite Element Analysis Method Based on the UG Preprocess

In order to overcome the difficulties of ANSYS finite element analysis (FEA) on complicated and large-scale structures, the computer aided design (CAD) software UG and the FEA software ANSYS are combined together. The practical model, finite element model, material property, load and restricting condition are accomplished in UG software. Then the solving file is created and put into ANSYS software to operate. The results show that the use of the method presented in this paper brings into full play the merits of UG software in building models and the powerful superiority of ANSYS software in algorithms. The method makes full use of the modifiability of the solving file and the openness of the ANSYS software, which integrates the feasibility of analysis with the calculation precision to the utmost. Thus, the method proposed in this paper opens up a new way to FEA for complicated and large-scale structures.