摘要
运用ABAQUS软件进行型芯压铸热循环仿真可以模拟应力应变分布、预测寿命,为优化改进提供重要依据,但是在前处理时需要考虑型芯几何建模、边界条件设定、温度场变化曲线等多重因素。在设计研发初期,反复调整参数时会耗费大量人力和时间。因此采用Python语言为ABAQUS开发了专用内核脚本程序和配套用户界面(GUI)插件,将带点冷结构型芯热循环仿真的前处理过程参数化、系统化,并提供简单易用的参数控制界面,以提升仿真效率。最后根据实际生产参数进行模拟测试,结果表明:可以对不同尺寸和材料的模具型芯进行快速建模和自定义温度场加载,实现基于三维非稳态温度场理论的模具热循环有限元仿真。通过仿真分析,发现了模具型芯存在低周疲劳特征,并给出了改善型芯应力分布的结构设计建议。研究结果为模具型芯热疲劳研究提供了便捷的仿真试验方法,有效支撑了高质量模具研发。
The use of ABAQUS software for thermal cycle simulations of mould core can simulate stress and strain distribution and predict life expectancy,providing important basis for optimization and improvement.However,multiple factors such as geometric modeling,boundary condition setting and temperature field variations need to be considered during pre-processing.In the early stages of design and development,repeated parameter adjustments can consume a lot of manpower and time.Therefore,a dedicated kernel script program and a graphical user interface(GUI)are developed for ABAQUS using Python to parameterize and systematize the pre-processing process of thermal cycle simulation of the mould core,and provide a simple and easy-to-use parameter control interface to improve simulation efficiency.Finally,simulation tests are conducted based on actual production parameters,and the test results show that it is possible to quickly model and customize temperature field loading for mould cores of different sizes and materials,achieving finite element simulation of mould thermal cycle based on three-dimensional unsteady temperature field theory.Through simulation analysis,low-cycle fatigue characteristics is found,and structural design suggestions for improving the stress distribution of cores are given.The research provides a convenient simulation test method for thermal fatigue research of mould cores,and effectively supports high-quality mold development.
作者
张潇龙
洪建明
Zhang Xiaolong;Hong Jianming(School of Mechanical and Electrical Engineering,Shenzhen Polytechnic University,Shenzhen,Guangdong 518055,China)
出处
《机电工程技术》
2024年第11期106-110,共5页
Mechanical & Electrical Engineering Technology
基金
深圳市教育科学规划课题(rgzn23029)
深职大-中望工业软件开发及应用研究中心项目(602331002PQ)。
