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| Key Technology of CAE Simulation for Large Complicated Multi-hole Plastic Part |
| YIN Hong-Ling, SUN Mao, XU Zong-Jian, CHEN Jun |
| （Department of Plasticity Forming Engineering, Shanghai Jiaotong University, Shanghai 200030, China） |
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Abstract Considering the large meshing model and timeconsuming computation in large complicated multihole part injection molding simulation, in order to solve the problems, according to the principle of equivalent volume, a simplified method was used to substitute multihole featural section with a simple cross section of shape factor and equivalent thickness and to derivate the formula of shape factor and equivalent thickness. The formula was used to simulate a car rear door panel, which not only decreases the calculation time, but also accurately predicts the location of the weld lines and air traps. The method is useful for the complicated parts with similar features.
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Received: 19 April 2011
Published: 30 March 2012
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