东南大学学报（英文版）2017，Vol.33Issue(4)：473-477,5.DOI:10.3969/j.issn.1003-7985.2017.04.013
基于修正Drucker-Prager/Cap模型的高压压实过程三维数值模拟
3D numerical simulation of high pressure squeezing process with revised Drucker-Prager/Cap model
摘要
Abstract
In order to investigate the sand mold strength after the aeration sand filling-high pressure squeeze molding process,a three-dimentional (3D) numerical simulation was introduced.The commercial finite element method (FEM) software ABAQUS combined with a revised Drucker-Prager/Cap model was used to simulate the squeeze compaction process.Additionally,the sand bulk density after the aeration sand filling process was tested by a specially designed experiment,which divided the whole sand bulk in the molding chamber into 5 × 9 regions and it was used as the input to simulate the squeeze process.During the simulation process,the uniform modeling simulation and the partition modeling simulation methods were used and the 3D numerical simulation results were compared with correlative benchmark testings.From the 3D numerical simulation results,it can be concluded that the uniform sand bulk density distribution can obtain a high quality sand mold and the revised Drucker-Prager/Cap model is suitable for handling the situation with the complex pattern.The 3D numerical simulation results can predict well the sand mold strength distribution and can be used as guidelines for the production practice.关键词
湿黏土砂/低压射砂-高压压实造型/修正的Drucker-Prager/Cap模型/数值模拟Key words
green sand/aeration sand filling-high pressure squeeze molding/revised Drucker-Prager/Cap model/numerical simulation分类
矿业与冶金引用本文复制引用
张庆东,倪长江,荆涛,吴浚郊,牧野泰育..基于修正Drucker-Prager/Cap模型的高压压实过程三维数值模拟[J].东南大学学报（英文版）,2017,33(4):473-477,5.基金项目
The National Natural Science Foundation of China (No.51575304),the National Science and Technology Major Project of the Ministry of Science and Technology of China (No.2012ZX04012011). （No.51575304）
