基于ANSYS二次开发的焊接温度场前处理系统

Pretreatment System of Welding Temperature Field Based on Secondary Development of ANSYS

要:针对大型应用软件ANSYS在进行有限元分析时存在重复建模缺点,基于VC与ANSYS的参数化设计语言APDL,对有限元前处理部分进行二次开发,编制出了管道焊接结构温度场的前处理系统.该系统封装了多种管道焊接结构建模以及不同焊接工艺的温度场分析过程的参数化命令流模板.通过友好直观的程序界面的操作,即可实现多种管道焊接结构的参数化建模、温度场数值模拟,从而提高了计算效率,保证了计算精度.并通过管道多层多道定位焊实例验证了该前处理系统的准确性及可用性.

When carrying out numerical analysis by large application software ANSYS,the programs usually need to be reworked or modified if the working conditions have changed. In order to solve the problem,a friendly pretreatment system of finite element,based on the VC platform and APDL language,was built by the secondary development of ANSYS. The pretreatment system was used to simulate the temperature field in pipelines,which encapsulated the modeling process of many different kinds of pipe joint forms,as well as parameterized command flow templates of temperature field simulation with different welding processes. Through friendly and intuitive interface operation,parameterized modeling and temperature field simulation of various welded structures can be accomplished,thus improving the computational efficiency and ensuring the calculation precision. The analytical methods turns out to be accurate and reliable as compared with the experimental results of multi-layer and multi-pass butt-welded pipes for positioning welding.