Polymers, Journal Year: 2024, Volume and Issue: 16(22), P. 3153 - 3153
Published: Nov. 12, 2024
Spring–dashpot models have long been used to simulate the mechanical behavior of polymers, but their usefulness is limited because multiple model parameter values can reproduce experimental data. In view this limitation, study explores possibility improving uniqueness so that parameters be establish relationship between deformation and microstructural changes. An approach was developed based on stress during loading, relaxation, recovery polyethylene. total, 1000 sets were determined for fitting data from relaxation stages with a discrepancy within 0.08 MPa. Despite small discrepancy, showed wide range variation, one parameter, σv,L0, followed two distinct paths rather than random distribution. The five selected discrepancies below 0.04 MPa found highly consistent, except characteristic time. Therefore, concludes improved characterize This then quasi-static four polyethylene pipes, which these pipes had very close stress. indicates spring–dashpot model, enabling further using polyethylene’s changes deformation.
Language: Английский