𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Viscoelastic material characterization and modeling for polyethylene

✍ Scribed by C. F. Popelar; C. H. Popelar; V. H. Kenner

Publisher
Society for Plastic Engineers
Year
1990
Tongue
English
Weight
837 KB
Volume
30
Category
Article
ISSN
0032-3888

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

An extensive set of stress relaxation and constant strain rate tests for characterizing the mechanical responses of a medium density polyethylene and a high density polyethylene that are commonly used in natural gas distribution piping is described and analyzed. The development of coherent master curves for the relaxation modulus, maximum stress, and the time‐to‐failure for pressurized pipes through a combination of both horizontal and vertical shifting is presented. The relaxation data are used to develop a nonlinear Viscoelastic material model. The model is assessed by making comparisons of the predicted stress‐strain response with the measured response in the constant strain rate tests.

πŸ“œ SIMILAR VOLUMES

Inverse viscoelastic material characteri
Inverse viscoelastic material characterization using POD reduced-order modeling in acoustic–structure interaction
✍ John C. Brigham; Wilkins Aquino πŸ“‚ Article πŸ“… 2009 πŸ› Elsevier Science 🌐 English βš– 641 KB

A strategy is presented for applying the proper orthogonal decomposition (POD) technique for model reduction in computational inverse solution strategies for viscoelastic material characterization. POD is used to derive a basis of optimal dimension from a selection of possible solution fields which