[1] Zhang Qingdong, Ni Changjiang, Jing Tao, Wu Junjiao, et al. 3D numerical simulation of high pressure squeezing processwith revised Drucker-Prager/Cap model [J]. Journal of Southeast University (English Edition), 2017, 33 (4): 473-477. [doi:10.3969/j.issn.1003-7985.2017.04.013]

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3D numerical simulation of high pressure squeezing processwith revised Drucker-Prager/Cap model()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

33

Issue:

2017 4

Page:

473-477

Research Field:

Materials Sciences and Engineering

Publishing date:

2017-12-30

Info

Title:

3D numerical simulation of high pressure squeezing processwith revised Drucker-Prager/Cap model

Author(s):

Zhang Qingdong¹;  Ni Changjiang¹;  Jing Tao¹;  Wu Junjiao¹;  Makino Hiroyasu²

¹ School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
² Sintokogio Ltd, Nagoya 450-6424, Japan

Keywords:

green sand;  aeration sand filling-high pressure squeeze molding;  revised Drucker-Prager/Cap model;  numerical simulation

PACS:

TG221

DOI:

10.3969/j.issn.1003-7985.2017.04.013

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.

References:

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Memo

Memo:

Biographies: Zhang Qingdong(1990—), male, graduate; Jing Tao(corresponding author), male, doctor, professor, jingtao@tsinghua.edu.cn.
Foundation items: 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).
Citation: Zhang Qingdong, Ni Changjiang, Jing Tao, et al. 3D numerical simulation of high pressure squeezing process with revised Drucker-Prager/Cap model[J].Journal of Southeast University(English Edition), 2017, 33(4):473-477.DOI:10.3969/j.issn.1003-7985.2017.04.013.

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