Taking account of mold deformation and plastic stress relaxation are two new capabilities in new version 4.6 of Sigmasoft injection molding simulation software from Sigma Plastics Services Inc., Schaumburg, Ill., the U.S. operation of Sigma Engineering GmbH in Germany. The software helps molders cope with ever-tighter part-dimension tolerances by incorporating the deformation of injection molds and cores due to temperature and injection pressure. Users can simulate core shift and movement of mold blocks. The new software also accounts for deformation of part inserts. The combined stiffness of the insert and surrounding polymer is calculated in the coupled shrinkage and warpage simulation. The software also simulates stress relaxation of the polymer during solidification inside the mold and the continued stress relaxation as the part cools after ejection. The simulation captures hindrances to free-shrinkage of the polymer, such as between core pins. This can be a benefit for complex part geometries that have a combination of areas with shrinkage hindrance and areas with free shrinkage. Tel: (847) 558-5602 . www.3Dsigma.com
Sigma Plastic Services Inc.
10 N. Martingdale Rd. #425 Schaumburg, IL 60173
Phone (847) 558-5600