New development allow for the prediction of the size, warped shape and mechanical propertis of a plastic part dependent on the specific conditions under which it was injection molded. These developments include computer programs designed to capture the discrete information under which the plastic material was formed, through all phases of the molding cycle. This is then combined with results of laboratory testing where the material's shrinkage and mechanical properties have been expressed in terms of its fundamental characteristics relative to how they were molded. Following this phase, external loads can be applied to the computer model of the part and stress analysis perfomed allowing an accurate accounting of the residual stress and anisotropic properties resulting from molding. This paper will concentrate on the aspects of predicating shrinkage and warpage.
Shrinkage and warpage analysis of plastic injection molded parts
Untersuchung der Schrumpfung und Verwerfung von spritzgegossenen Kunststoffteilen
SAE-Papers ; Mar ; 1-11
1989
11 Seiten, 6 Bilder
Conference paper
English
Shrinkage and warpage analysis of plastic injection molded parts
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