To forecast the hot warpage deformation of a liquid crystal polymer injection molding.
The warpage deformation occurring in an object part of the injection molding is forecasted by executing: a first process of obtaining the relation between the integrated value of shearing stress by the flow and solidification in molding, a molecular orientation state and the anisotropy of linear expansion coefficient as a material characteristic data; a second process of obtaining the data of orientation and shearing stress occurring in the object part in the flow and solidification of the injection molding; a third process of converting the linear expansion coefficient anisotropy data of the object part from the material characteristic data and the data of the integrated value of the orientation and the shearing stress in the object part of the injection molding; a forth process of mapping the expansion and contraction of converted linear expansion coefficient anisotropy data with a finite element method model of injection molding; and a fifth process of computing the expansion and the contraction occurring with the change of the temperature by performing the structural analysis of the finite element method model.
IKEGAWA NAOTO
Mitsuo Tanaka
Yasuo Shibata