Multiple relaxation mechanism-based thermo-mechanical constitutive model describing cyclic shape memory effect of shape memory polyurethane

Liang, Zhihong; Li, Jian; Chen, Kaijuan; Yu, Chao; Kan, Qianhua

doi:10.1007/s10409-023-23347-x

Acta Mech. Sin.

2024

DOI: 10.1007/s10409-023-23347-x

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Multiple relaxation mechanism-based thermo-mechanical constitutive model describing cyclic shape memory effect of shape memory polyurethane

Zhihong Liang,

Jian Li,

Kaijuan Chen

et al.

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Cited by 2 publications

References 64 publications

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A micromechanical model to predict the effective thermomechanical behavior of one-way shape memory polymers

Bakhtiari,

Narooei

2025

Mechanics of Materials

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A micromechanical model to predict the effective thermomechanical behavior of one-way shape memory polymers

Bakhtiari,

Narooei

2025

Mechanics of Materials

View full text Add to dashboard Cite

Experimental Investigation on the Cyclic Shape Memory Effect of Thermo-Induced Shape Memory Polyurethane Under Multiaxial Pre-Deformations

Liang,

Li,

Liu

et al. 2024

Int. J. Appl. Mechanics

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The shape memory effect (SME) under multiaxial pre-deformation has become a significant problem restricting the development of thermo-induced shape memory polyurethane (TSMPU) in complex service conditions. This study experimentally investigates the multiaxial SME of TSMPU under proportionally and non-proportionally multiaxial loadings. The effects of different loading directions and paths with combined tension/compression–torsion pre-deformations on the multiaxial SME are discussed. The results indicate that the SME exhibits significant anisotropic characteristics under different loading angles. Additionally, the multiaxial SME shows considerable dependence on the loading path and loading sequence. The conditions under compression and torsion loadings can promote more deformation recovery than that under tension loading. The functional degradation of the multiaxial SME under various loading paths is revealed through cyclic thermomechanical experiments. Based on these experimental results, the deformation mechanism for the multiaxial SME based on the motivation of molecular chains is proposed, which is crucial for constructing a thermomechanical constitutive model of TSMPU under proportionally and non-proportionally multiaxial pre-deformations.

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Multiple relaxation mechanism-based thermo-mechanical constitutive model describing cyclic shape memory effect of shape memory polyurethane

Cited by 2 publications

References 64 publications

A micromechanical model to predict the effective thermomechanical behavior of one-way shape memory polymers

A micromechanical model to predict the effective thermomechanical behavior of one-way shape memory polymers

Experimental Investigation on the Cyclic Shape Memory Effect of Thermo-Induced Shape Memory Polyurethane Under Multiaxial Pre-Deformations

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