基于SPH-FEM耦合方法的挤压铸造数值模拟
Numerical Simulation of Squeeze Casting Based on SPH-FEM Coupling Method
葛涛涛 1赵展 1牛晓峰 1王天成 1刘朝炫1
作者信息
- 1. 太原理工大学材料科学与工程学院,太原 030000
- 折叠
摘要
论述了基于光滑粒子流体动力学(SPH)和有限单元法(FEM)耦合分析方法的模型建立和模拟,对挤压铸造过程的流动场及热应力场进行了数值模拟,自主编写了SPH-FEM耦合分析方法的模拟程序.采用挤压铸造支架零件进行了模拟验证,并将SPH充型过程模拟结果与通用商业化软件模拟结果进行了对比分析,发现模拟结果基本一致.分析了FEM凝固过程温度场、应力场模拟结果,发现在支架零件侧面薄壁处冷却速度最快,有效应力值最大.研究表明,开发的基于SPH-FEM耦合的挤压铸造过程数值模拟程序,模拟结果准确,运行可靠.
Abstract
The model establishment and simulation based on coupling analysis method of smoothed particle hydrody-namics(SPH)and finite element method(FEM)were described emphatically.The flow field and thermal stress field of squeeze casting process were numerically simulated,and the simulation program of SPH-FEM coupling analysis method was independently compiled.The simulation results of SPH filling process were compared with those of gen-eral commercial software,and the results are basically consistent.The simulation results of temperature field and stress field in the solidification process of FEM were analyzed.It is found that the cooling rate and effective stress value reach the highest at the thin wall of the side of the support part.The research shows that the developed numerical simulation program of squeeze casting process based on SPH-FEM coupling has accurate simulation results and reliable operation.
关键词
挤压铸造/光滑粒子流体动力学/有限元/数值模拟Key words
Squeeze Casting/Smooth Particle Hydrodynamics(SPH)/Finite Element Method/Numerical Simulation引用本文复制引用
基金项目
中央引导地方科技发展资金资助项目(YDZJSX2022A012)
出版年
2024
NETL
NSTL
万方数据