A Novel Phenomenological Constitutive Model for Semi-Crystalline Polymers Across a Wide Strain-Rate Range.

Yuxiang Zhang, Runqiang Chi, Shengjie Wang, Xuewen Zhang, Jiyue Si, Yuchen Zhao, Guangzhi Cui, Jun Ma

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Article in Polymers, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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8 authors.

Yuxiang ZhangBeijing Machine and Equipment Institute, Beijing 100854, China.

Runqiang ChiHypervelocity Impact Research Center, Harbin Institute of Technology, Harbin 150080, China.ORCID 0000-0002-9179-4146

Shengjie WangBeijing Machine and Equipment Institute, Beijing 100854, China.

Xuewen ZhangBeijing Machine and Equipment Institute, Beijing 100854, China.

Jiyue SiBeijing Machine and Equipment Institute, Beijing 100854, China.

Yuchen ZhaoBeijing Machine and Equipment Institute, Beijing 100854, China.

Guangzhi CuiBeijing Machine and Equipment Institute, Beijing 100854, China.

Jun MaBeijing Machine and Equipment Institute, Beijing 100854, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Focusing on the complex mechanical responses exhibited by semi-crystalline polymers under the coupled influences of strain hardening, strain-rate strengthening, and temperature softening, this paper proposes a phenomenological constitutive model employing a three-branch parallel structure. Using a hybrid global optimization algorithm, the optimal parameters for polypropylene were identified, attaining a coefficient of determination of 0.9834 and controlling the average absolute relative error within 6.4%. Moreover, the effectiveness of the proposed constitutive model was accurately validated through two material models from the LS-Dyna software 4.8.29 database, and the simulation results exhibited high consistency with the theoretical model. This study provides a high-confidence material model suitable for high-strain-rate simulation scenarios.

Indexed as

constitutive modelsemi-crystalline polymerstrain rateviscoelastic–viscoplastic

Identifiers

PMID40292666

DOI10.3390/polym17060762

PMCPMC11946346

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LicenceCC BY

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.