Yao Xiulong, Wang Zepeng, Ma Lianxiang, Miao Zhanli, Su Minglong, Han Xiaoying, Yang Jian
College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China.
Polymers (Basel). 2022 Aug 27;14(17):3521. doi: 10.3390/polym14173521.
Based on the electronic universal testing machine with a temperature chamber, this paper investigated the temperature and filler effects on the hyper-elastic behavior of reinforced rubbers and revealed the regulation of the stress and strain of the natural rubber and filled rubber with temperature. The experimental results showed that the hyper-elastic behavior of the filled rubber was temperature-dependent in a wide range. Comparing the adaptability of different models to the stress-strain variation with temperature, the Yeoh model was proven to reasonably characterize the experimental data at different temperatures. Based on the Yeoh model, an explicit temperature-dependent constitutive model was developed to describe the stress-strain response of the filled rubber in a relatively large temperature range. The prediction data of this proposed constitutive model fit well with the test data of the mechanical experiments, indicating that the model is suitable to characterize the large deformation behavior of filled rubbers at different temperatures to a certain degree. The proposed model can be used to obtain the material parameters and has been successfully applied to finite element analysis (FEA), suggesting a high application value. Notably, the model has a simple form and can be conveniently applied in related performance tests of actual production or finite element analysis.
基于带有温度室的电子万能试验机，本文研究了温度和填料对增强橡胶超弹性行为的影响，并揭示了天然橡胶和填充橡胶的应力与应变随温度的变化规律。实验结果表明，填充橡胶的超弹性行为在很宽的温度范围内与温度有关。通过比较不同模型对应力 - 应变随温度变化的适应性，证明Yeoh模型能够合理地表征不同温度下的实验数据。基于Yeoh模型，开发了一个明确的温度相关本构模型，以描述填充橡胶在相对较大温度范围内的应力 - 应变响应。该本构模型的预测数据与力学实验的测试数据拟合良好，表明该模型在一定程度上适用于表征填充橡胶在不同温度下的大变形行为。所提出的模型可用于获取材料参数，并已成功应用于有限元分析（FEA），具有较高的应用价值。值得注意的是，该模型形式简单，可方便地应用于实际生产的相关性能测试或有限元分析。
