Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (1): 100-105.doi: 10.3969/j.issn.1000-565X.2011.01.019

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

SPH Modelling and Validation for Filling Process of HPDC

Cao Wen-jiong1 Zhou Zhao-yao1 He Yi1 Wu Fei2   

  1. 1.South China university of technology, mechanical and automotive engineering school, guangdong guangzhou 510640；2.Guangzhou holley technology professional college, guangdong guangzhou 51 1325
  • Received:2010-06-23 Revised:2010-08-19 Online:2011-01-25 Published:2010-12-01
  • Contact: 曹文炅(1983一)，男，博士生，主要从事精密模具成型及数值模拟研究 E-mail:wenjiong.cao@gmail.com
  • About author:曹文炅(1983一)，男，博士生，主要从事精密模具成型及数值模拟研究
  • Supported by:

    粤港关键领域重点突破项目(2007Z010)；广东省重大科技专项(2008A080800022)

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Abstract:

The numerical method based on Eulerian description is difficult to solve the free surface flow in filling process of high pressure die casting(HPDC). In order to improve the accuracy of free surface’s numerical simulation, a smoothed particle hydrodynamics(SPH) program with pure largrangian description was established in this paper for HPDC filling process’s calculation. Monaghan boundary type was introduced to modelling the solid wall boundary condition of mold cavity. Inlet boundary condition was implemented by dividing inlet region particles and flow region particles. The validation model given by M.Schmid was calculated by this SPH program, and the simulation results were compared with both experimental and FDM simulation results. The SPH results were better able to describe the distribution of free surface during the filling process, further more the voids formed in filling process could be captured precisely in respect of location and dimension.

Key words: HPDC, SPH method, boundary conditions, filling simulation