【摘要】 不同温度下不同炭黑填充比橡胶的超弹性力学行为的实验发现，炭黑填充橡胶的超弹性力学行为存在着温度相关性。与未填充天然橡胶相比，炭黑填充橡胶的应力应变曲线随温度的变化表现出更加复杂的力学特征。即填充橡胶的整体模量随温度先下降，在到达一定温度后再上升，并且不同填充比橡胶的超弹性温度相关性是不同的。利用改进的八链模型对不同炭黑填充比橡胶的超弹性温度相关性进行表征，改进八链模型可以较准确表征在一定变形范围内橡胶的温度相关性超弹性力学行为。对橡胶不同温度下的改进模型材料参数进行了讨论，结果发现材料参数有明显的温度相关性，其随温度的变化规律大致呈二次函数变化。更多还原

【Abstract】 In this paper, experiments on the hyperelastic mechanical behavior of rubber with different carbon black(CB) dosage at different temperatures were tested. It is found that the hyperelastic mechanical behavior of CB filled rubber has temperature-dependence. Compared with that of unfilled natural rubber, the stress-strain curve of CB filled rubber exhibits more complex mechanical characteristics with temperature. That is, the overall modulus of filled rubber decreases firstly with increasing temperature, and then increases after reaching a certain temperature, and the hyperelastic temperature-dependence of rubber with different CB dosage is different. The improved eight-chain model is used to characterize the hyperelastic temperature-dependence of rubber with different CB dosage, and the improved eight-chain model can accurately characterize the temperature-dependent hyperelastic behavior of rubber in a certain deformation range. The material parameters of the improved model at different temperatures of rubber are discussed. It is found that the material parameters have obvious temperature-dependence, and the variation of the material parameters with increasing temperature is roughly quadratic function.更多还原