未固化橡胶的应变速率相关行为:实验研究和本构模型

IF 1.2 4区 工程技术 Q4 POLYMER SCIENCE
Sanghyeub Kim, T. Berger, M. Kaliske
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引用次数: 0

摘要

通过一系列不同应变速率下的拉伸试验(单调、多步松弛、循环蠕变试验),研究了未固化橡胶的应变速率相关性。此外,还进行了应变速率在每个循环中变化的加载/卸载试验,以观察其对变形历史的依赖性。提出了一个与应变率相关的粘弹性-粘塑性本构模型,在试验结果中观察到了非线性粘度和过程相关的恢复特性。这些特性是通过引入附加内部变量的演化方程来实现的。所确定的材料参数在质量上很好地捕捉了实验。该模型还通过轮胎成型过程的有限元模拟进行了评估,然后进行了内成型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
STRAIN RATE–DEPENDENT BEHAVIOR OF UNCURED RUBBER: EXPERIMENTAL INVESTIGATION AND CONSTITUTIVE MODELING
The strain rate dependence of uncured rubber is investigated through a series of tensile tests (monotonic, multistep relaxation, cyclic creep tests) at different strain rates. In addition, loading/unloading tests in which the strain rate is varied every cycle are carried out to observe their dependence on the deformation history. A strain rate–dependent viscoelastic–viscoplastic constitutive model is proposed with the nonlinear viscosity and process-dependent recovery properties observed in the test results. Those properties are implemented by introducing evolution equations for additional internal variables. The identified material parameters capture the experiments qualitatively well. The proposed model is also evaluated by finite element simulations of the building process of a tire, followed by the in-molding.
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来源期刊
Rubber Chemistry and Technology
Rubber Chemistry and Technology 工程技术-高分子科学
CiteScore
3.50
自引率
20.00%
发文量
21
审稿时长
3.6 months
期刊介绍: The scope of RC&T covers: -Chemistry and Properties- Mechanics- Materials Science- Nanocomposites- Biotechnology- Rubber Recycling- Green Technology- Characterization and Simulation. Published continuously since 1928, the journal provides the deepest archive of published research in the field. Rubber Chemistry & Technology is read by scientists and engineers in academia, industry and government.
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