Optimum design of runner system balancing in injection molding

C. S. Li, Y. K. Shen

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


The runner-system design is of great importance to achieve a successful injection molding process of a family mold with multiple cavities. Using a Galerkin finite element method to simulate the flow of a one-dimensional tube runner-system including phase change in detail we present a power law model. The difference between the pressure and temperature at the gate entrance of all cavities can be taken as the objective function to be minimized because if all cavities are filled simultaneously, these pressure and temperature variations should be a minimum. The purpose is to fill all cavities at the same instant under the same conditions in order to prevent flashing of the mold and to produce parts of improved and uniform quality. In this paper we present a feasible means to optimize the runner design automatically by integrating optimization theory with a flow/thermo-simulation program.

Original languageEnglish
Pages (from-to)179-188
Number of pages10
JournalInternational Communications in Heat and Mass Transfer
Issue number2
Publication statusPublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Fluid Flow and Transfer Processes
  • Mechanical Engineering


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