摘要
填充橡胶材料在工程减隔振结构中广泛应用,对其超弹性力学特性的准确模拟对工程结构的服役性能准确预测至关重要。针对一种隔振橡胶材料试样进行了单轴拉伸(UT)、单轴压缩(UC)和简单剪切(SS)试验等3种基本材料力学试验,对其超弹性力学行为进行了表征,讨论了在3种力学试验数据不全的情况下4种常用超弹性本构模型预测其他变形模式的能力,并提出了3个误差评价指标和1个拟合优度系数R来评价拟合精度。最后,根据研究结果,讨论了不同试验条件下超弹性材料本构模型的适用性并给出了选择建议。
Filled rubber material is widely used in engineering vibration isolation structures.Accurately describing its hyperelastic properties is very important for accurate prediction of service performance of the engineering structures.Three basic mechanical tests including the uniaxial tensile(UT),uniaxial compression(UC)and simple shear(SS)test were performed on an isolation rubber to character its hyperelastic mechanical behavior.Abilities of four commonly used hyperelastic constitutive models in predicting other kinds of deformations were discussed with incomplete data of these three basic mechanical tests.Three error evaluation indexes and a fitting goodness coefficient R were proposed to evaluate the fitting accuracy of each constitutive model.Finally,the applicability of different constitutive models under different experimental conditions was discussed and corresponding suggestions were given.
作者
徐昱根
柳琳琳
沈双全
朱浩
XU YuGen;LIU LinLin;SHEN ShuangQuan;ZHU Hao(China Institute of Nuclear Power,Chengdu 610231,China;Department of Mechanic Science and Engineering,Sichuan University,Chengdu 610065,China)
出处
《机械强度》
CAS
CSCD
北大核心
2023年第6期1332-1339,共8页
Journal of Mechanical Strength
基金
国家自然科学基金项目(52275120)
四川省自然科学基金项目(2022NSFSC1929)资助。
关键词
隔振橡胶材料
超弹性本构模型
材料力学试验
拟合精度
适用性
Vibration isolation rubber material
Hyperelastic constitutive models
Material mechanical tests
Fitting accuracy
Applicability
