US 2014/0156237 A1 · Predicting Shrinkage of Injection Molded Products with Viscoelastic Characteristic

Abstract

A computer-implemented method and non-transitory computer medium for calculating a shrinkage of a molding product comprises a step of using a computer processor to calculate a molding pressure of a molding fluid in a molding cavity by taking into consideration an increase of a shear viscosity of the molding fluid by a decrease of a shear rate, and a step of calculating the shrinkage of the molding products by taking into consideration a variation of a specific volume of the molding fluid as the molding pressure and a molding temperature decrease.

Claims22

Dependent claims

A computer-implemented method for calculating a shrinkage of a molding product, comprising a step of using a computer processor to calculate the shrinkage of the molding product from a molding fluid by taking into consideration an increase of a shear viscosity of the molding fluid by a decrease of a shear rate.

Dependencies are inferred from the claim text.

Facts

Application

14/091,756Filed 27 Nov 2013

Priority

3 Dec 2012

Published

5 Jun 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

B29C 45/7693
Measuring, controlling or regulating: using rheological models of the material in the mould, e.g. finite elements method
G06F 30/20
Computer-aided design [CAD]: design optimisation, verification or simulation
G06F 30/23
Design optimisation, verification or simulation: using finite element methods [FEM] or finite difference methods [FDM]
G06F 30/28
Design optimisation, verification or simulation: using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]

Predicting Shrinkage of Injection Molded Products with Viscoelastic Characteristic

Life of this patent

Predicting Shrinkage of Injection Molded Products with Viscoelastic Characteristic

Life of this patent

Abstract

Claims22