EPDM薄膜橡胶包覆材料的粘-超弹本构模型研究

推进技术 ›› 2015, Vol. 36 ›› Issue (3): 465-470.

EPDM薄膜橡胶包覆材料的粘-超弹本构模型研究

余家泉¹,陈雄¹,周长省¹,高艳宾¹,杜红英²

南京理工大学机械工程学院，江苏南京 210094,南京理工大学机械工程学院，江苏南京 210094,南京理工大学机械工程学院，江苏南京 210094,南京理工大学机械工程学院，江苏南京 210094,晋西工业集团有限责任公司，山西太原 030027

发布日期:2021-08-15
作者简介:余家泉(1990—)，男，硕士生，研究领域为固体火箭发动机装药结构完整性分析。
基金资助:
总装备部重点预先研究项目(20101019)。

Visco-Hyperelastic Constitutive Model for Filmy EPDM Inhibitor

School of Mechanical Engineering，Nanjing University of Science and Technology，Nanjing 210094，China,School of Mechanical Engineering，Nanjing University of Science and Technology，Nanjing 210094，China,School of Mechanical Engineering，Nanjing University of Science and Technology，Nanjing 210094，China,School of Mechanical Engineering，Nanjing University of Science and Technology，Nanjing 210094，China and Jinxi Industries Group Co.Ltd，Taiyuan 030027，China

Published:2021-08-15

摘要/Abstract

摘要： 为了描述一种新型三元乙丙(EPDM)橡胶薄膜包覆材料的力学性能，进行了不同拉伸速率(0.1～5mm/s)下的单轴拉伸试验和多步松弛试验。研究了材料的应力-应变响应，建立了有限变形下的粘-超弹本构模型。模型由超弹与粘弹两部分组成:超弹部分基于多项式应变能函数推导获得，粘弹部分则采用Maxwell模型来描述。通过单轴拉伸试验和多步松弛试验分别获得粘弹参数和超弹参数。将所建模型预测结果与试验结果相对比。结果表明:模型能很好地描述材料在20%工程应变范围内的力学特性，预测结果与试验结果最大偏差仅为5.6%，验证了模型的可靠性。

关键词: 三元乙丙橡胶；包覆层；粘-超弹性；本构模型

Abstract: In order to investigate the mechanical behavior of a new kind of filmy Ethylene- Propylene-Diene Monomer (EPDM) inhibitor，uniaxial tensile tests at different tensile rates (0.1～5mm/s) and multi-step relaxation test were conducted. The stress-strain response of this material was studied and a visco-hyperelastic constitutive model was developed under finite deformation. The model consists of two parts: a hyperelastic part derived from a polynomial strain energy density function and a viscoelastic part described by the Maxwell model. The viscoelastic parameters were obtained by the uniaxial tensile tests and the hyperelastic parameters were obtained by multi-step relaxation test. Comparisons were made between the predictions based on the proposed model and the test result in the range of 20% engineering strain. The results show that the maximum deviation between the predictions and the test result is only 5.6%，which confirms that the constitutive model can describe the mechanical properties of this material well.

Key words: EPDM rubber；Inhibitor；Visco-hyperelasticity；Constitutive model

余家泉,陈雄,周长省,高艳宾,杜红英. EPDM薄膜橡胶包覆材料的粘-超弹本构模型研究[J]. 推进技术, 2015, 36(3): 465-470.

YU Jia-quan¹,CHEN Xiong¹,ZHOU Chang-sheng¹,GAO Yan-bin¹,DU Hong-ying². Visco-Hyperelastic Constitutive Model for Filmy EPDM Inhibitor[J]. Journal of Propulsion Technology, 2015, 36(3): 465-470.

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