胶膜超粘弹性行为的表征

IF 1.5 4区 工程技术 Q3 MECHANICS
H. Hsu, J. Tsai
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引用次数: 3

摘要

在本研究中,表征了胶膜的超粘弹性行为。将Mooney-Rivlin超弹性模型与proony级数表示的粘弹性模型相结合,建立了描述胶膜本构行为的本构模型。通过在100%、200%、300%和400%应变水平下进行30 min的单步应力松弛试验,确定本构模型的材料参数。基于降阶梯度法,对实验数据进行曲线拟合,对优化后的材料参数进行评价。为了验证所提出的本构模型,我们在5 × 10−4到5 × 10−1 s−1的不同应变速率下进行了拉伸试验,并对胶膜进行了多步应力松弛试验。模型预测结果与实验数据吻合较好。由此可见,采用单步应力松弛试验确定参数的超粘弹性本构模型是表征胶膜力学行为的有效方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characterizing the hyper-viscoelastic behavior of adhesive films
In this study, the hyper-viscoelastic behavior of adhesive films was characterized. A constitutive model was developed by combining the Mooney–Rivlin hyperelastic model and a viscoelastic model expressed in terms of the Prony series to describe the constitutive behavior of the adhesive films. The material parameters of the developed constitutive model were determined through single-step stress relaxation tests conducted for 30 min at four strain levels: 100%, 200%, 300% and 400%. Based on the reduced gradient method, the optimized material parameters were then evaluated by curve fitting the experimental data. To validate the proposed constitutive model, we performed the tensile tests at different strain rates from 5 × 10−4 to 5 × 10−1 s−1 and the multistep stress relaxation tests on the adhesive films. The model predictions and experimental data were in good agreement. Thus, the proposed hyper-viscoelastic constitutive model with parameters determined through single-step stress relaxation tests is effective in characterizing the mechanical behavior of adhesive films.
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来源期刊
Journal of Mechanics
Journal of Mechanics 物理-力学
CiteScore
3.20
自引率
11.80%
发文量
20
审稿时长
6 months
期刊介绍: The objective of the Journal of Mechanics is to provide an international forum to foster exchange of ideas among mechanics communities in different parts of world. The Journal of Mechanics publishes original research in all fields of theoretical and applied mechanics. The Journal especially welcomes papers that are related to recent technological advances. The contributions, which may be analytical, experimental or numerical, should be of significance to the progress of mechanics. Papers which are merely illustrations of established principles and procedures will generally not be accepted. Reports that are of technical interest are published as short articles. Review articles are published only by invitation.
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