Investigation and Optimization of Process Parameters for Warpage in Injection Molded Gear
Keywords:
Warpage, Optimum, Finite element simulation.Abstract
In injection molded part uneven cooling causes uneven distribution of stresses. These stresses affect dimensional accuracy and warpage is set up in the part. The lack of injection molding machine control leads to this defect in plastic parts. Accurate prediction of optimum process parameters is important to minimize warpage. To find optimum process parameter values Finite Element analysis software, Moldflow Plastic Insight, and different optimization techniques are used. The optimum combination of process parameters which minimizes warpage is found out. Melt temperature is the pivotal factor participating to warpage in this problem. After optimization warpage value is reduced by 5.3% with optimum process setting. On the basis of finite element simulation data Neural network model is formulated which gives results with acceptable accuracy. It is used alternative as it is cheap and less time consuming comparable to finite element simulation process.
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