Prediction of the impact performance of plastics using finite element methods.
- Author(s):
Dean, G D, Crocker, L E
- Source:
- Measurement Good Practice Guide No. 87, February 2006
- ISSN:
- 1368-6550
- ISBN:
- NPL Doc. Ref:
- PDB: 4212
- Document Type:
- Guide
- DOI:
Note: An asterisk after an author's name indicates a non-NPL author.
Abstract:
This Guide describes the application of Finite Element Analysis (FEA) for predicting the impact performance of plastics and the measurement of input data. Three elastic-plastic materials models are introduced that are able to describe the large strain, non-linear behaviour of plastics when this is caused by yield and flow. These models are the von Mises and linear Drucker-Prager models available in FE packages and a new model that takes account of the influence of cavitation on plastic deformation. Limitations in the applicability of the first two models for describing the deformation behaviour of the copolymer are demonstrated. Test methods are described for the determination of property data and parameters required by these models for the simulation of impact performance using finite element methods.
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