基于SPH新方法铸造充型过程三维数值模拟  

3D Numerical Simulation of Casting Filling Process Based on SPH Methods

作　　者：宋振亮 牛晓峰[1] 阎佩雯 赵静雨 黄华贵[3] SONG Zhenliang;NIU Xiaofeng;YAN Peiwen;ZHAO Jingyu;HUANG Huagui(School of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Polytechnic Institute,Taiyuan University of Technology,Taiyuan 030024,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]太原理工大学现代科技学院,山西太原030024 [3]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《铸造技术》2019年第3期249-252,共4页Foundry Technology

基　　金：国家自然科学基金资助项目(51574176;51874209)

摘　　要：引入一种新的无网格光滑粒子流体动力学SPH方法模拟铸造充型过程,SPH方法能够避免网格法在求解过程中的网格扭曲和缠绕,并且改善网格法求解精度。基于SPH法的优势,建立了基本数学模型,编写了三维计算程序,并引用虚粒子边界解决三维情况下边界不易施加的问题。通过对底注式平板件铸造充型过程进行数值模拟,并将模拟结果与实验结果和基于网格法的ProCast模拟结果进行对比,验证了SPH方法在计算铸造充型过程中的可行性和有效性。A new meshless smooth particle hydrodynamics(SPH) method was introduced to simulate the filling process of casting. The SPH method can avoid the mesh distortion and winding in the process of solving the mesh method, and improve the precision of solving the mesh method. Based on the advantages of SPH method, the basic mathematical model was established and the 3 D calculation program was written. Moreover, the virtual particle boundary was used to solve the problem that the boundary was not easy to be applied in 3 D. Through the numerical simulation of the filling process of bottom injection flat panel casting, the simulation results are compared with the experimental results and the simulation results of ProCast based on grid method, and the feasibility and effectiveness of SPH method in calculating the filling process of casting are verified.

关 键 词：光滑粒子流体动力学 虚粒子法 数值模拟 铸造充型过程 

分 类 号：TG211[金属学及工艺—铸造] TP391.9[自动化与计算机技术—计算机应用技术]