Thermoviscoelastic Calculation of Residual Stresses and Residual Shapes of Injection Molded Parts**
- 1 March 1992
- journal article
- research article
- Published by Walter de Gruyter GmbH in International Polymer Processing
- Vol. 7 (1) , 60-70
- https://doi.org/10.3139/217.920060
Abstract
The present paper describes a three-dimensional finite element method for calculating thermoviscoelastic stresses generated during cooling of injection molded parts. The initial temperature field corresponds to the end of the filling stage. The fully time-dependent algorithm is based on the calculation of the elastic response at every time step. The time-temperature equivalence is assumed for the non-isothermal behavior. At the end of the calculation, one obtains the residual stresses and the shape of molded parts at room temperature. The method is illustrated by means of four examples.This publication has 4 references indexed in Scilit:
- Mechanism of Cooling Stress Build-Up in Injection Molding of Thermoplastic Polymers**International Polymer Processing, 1987
- Transient and Residual Thermoviscoelastic Stresses in GlassJournal of Applied Mechanics, 1980
- Solution of Viscoelastic Stress Analysis Problems Using Measured Creep or Relaxation FunctionsJournal of Applied Mechanics, 1963
- On Transient Thermal Stresses in Viscoelastic Materials With Temperature-Dependent PropertiesJournal of Applied Mechanics, 1961