华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (4): 9-12.

• 力学 • 上一篇    下一篇

橡胶类材料大应变硬化的本构关系

刘锋1 朱艳峰1 李丽娟1 黄小清2   

  1. 1.广东工业大学 建设学院,广东 广州 510006;2.华南理工大学 交通学院,广东 广州 510640
  • 收稿日期:2005-04-13 出版日期:2006-04-25 发布日期:2006-04-25
  • 通信作者: 刘锋(1965-),男,教授,博士,主要从事计算力学研究. E-mail:fliu@gdut.edu.en
  • 作者简介:刘锋(1965-),男,教授,博士,主要从事计算力学研究.
  • 基金资助:

    广东省自然科学基金资助项目(010025,032487);教育部留学回国人员科研启动基金资助项目(2005—55)

Constitutive Law of Hardening Rubber-Like M aterial with Large Strain

Liu Feng1  Zhu Yan-feng1  Li Li-juan1  Huang Xiao-qing2   

  1. 1.Faculty of Construction Engineering,Guangdong Univ.of Ttech.,Guangzhou 510006,Guangdong,China;2.College of Traffic and Communications,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-04-13 Online:2006-04-25 Published:2006-04-25
  • Contact: 刘锋(1965-),男,教授,博士,主要从事计算力学研究. E-mail:fliu@gdut.edu.en
  • About author:刘锋(1965-),男,教授,博士,主要从事计算力学研究.
  • Supported by:

    广东省自然科学基金资助项目(010025,032487);教育部留学回国人员科研启动基金资助项目(2005—55)

摘要: 橡胶材料具有良好的弹性性能和拉伸能力,为典型的超弹性材料.其在大应变时常呈现出应力一应变的增强或软化效应,本构关系较复杂.目前,有关橡胶材料大应变硬化的本构关系实验研究尚属匮乏.文中对橡胶类材料大应变时的硬化现象进行了实验和理论研究,提出了一种新的应变能函数来描述橡胶材料的本构关系,测定了橡胶材料硬化时的本构参数,并进行了实验验证.研究结果表明该应变能函数可较好地描述橡胶材料在大应变时的硬化现象,为进一步研究橡胶材料硬化的本构特性提供了参考依据.

关键词: 橡胶材料, 大应变, 硬化, 本构关系

Abstract:

Rubber-like material is a typical kind of hyperelastic material with good elasticity and stretching capaci-ty.It displays stress-strain hardening or softening when subjected to large strain.The constructive law of rubber-like material iS complicated and few experimental researches have been carried out on it.The hardening phenome-non of rubber-like material is experimentally and theoretically investigated in this paper,and a new strain-energy function is put forward to describe the constitutive law of the material.The corresponding constitutive parameters of the material are then measured and verified by experiments.The results indicate that the proposed strain·energy function accord well with the hardening phenomenon of rubber-like material and can be used as a theoretical basis for the investigation into the constitutive law of hardening material.

Key words: rubber-like material, large strain, hardening, constitutive law