基于细观相变和黏弹性本构模型的SMP热力循环数值模拟对比分析

doi:10.11896/cldb.21030129

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Abstract Shape memory polymer (SMP), as a typical smart material, has attracted great attention in the fields of aerospace, microsystems and biomedicine due to its unique shape memory properties. In order to make more accurate use of the shape memory characteristics of SMP for engineering applications, this work used phase transition constitutive and viscoelastic constitutive models for comparative simulation research. Firstly, using the classical phase transition theory of micromechanics combined with SMP materials, an explicit analytical solution of its stored strain formula was given. Through a series of experiments such as uniaxial tension, stress relaxation and thermal cycling, the parameters of the two constitutive models were obtained, and then the thermal shape memory cycle process of SMP was simulated. The numerical simulation results of different constitutive models are compared with the experimental results. The research results show that the simulation results of the constitutive model using phase transition theory are more consistent with the experimental results, and can more accurately reflect the shape memory characteristics of SMP materials.

Key words： shape memory polymer(SMP) phase transition constitutive viscoelastic constitutive numerical simulation

Published: 10 August 2022 Online: 2022-08-15

CLC number:

TF12

Fund:Fundamental Research Funds for the Central Universities of China (3122022106).

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	Articles by authors
	ZHANG Fangfang
	ZHOU Rui
	SUN Yigang
	LIU Bingfei
	DU Chunzhi
	HONG Bin

Cite this article:

ZHANG Fangfang,ZHOU Rui,SUN Yigang, et al. Comparative Study of the Simulation Result of SMP Thermo-Mechanical Cycle Based on Phase Transition Constitutive and Viscoelastic Constitutive Models[J]. Materials Reports, 2022, 36(15): 21030129-7.

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http://www.mater-rep.com/EN/10.11896/cldb.21030129 OR http://www.mater-rep.com/EN/Y2022/V36/I15/21030129

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