为了研究橡胶类材料在热环境中拉伸撕裂引起的破损现象,开展了热环境对橡胶材料性能的影响分析.通过建立随机分布多颗粒代表性体积单元(RVE),用ABAQUS模拟研究温度对炭黑补强橡胶基复合材料力学性能的影响.采用平面应变模型进行单轴拉伸,并施加周期边界条件来保证变形场的协调性;重点研究了温度、颗粒含量对复合材料定伸应力和弹性模量的影响以及热残余应力场的分布.结果表明:在温度一定的情况下,炭黑补强橡胶定伸应力随颗粒含量的增大呈非线性递增;热残余应力对复合材料应力应变响应产生一定影响,使橡胶拉伸强度降低;随着温度的升高,定伸应力逐渐下降,说明温度越高,胶体拉伸阻力越小,胶体更容易被破坏.%To study the breakage phenomena of rubber materials caused by tensile and tearing in the thermal environment,the influences of thermal environment on the properties of rubber materials were analysed.In this article,representative volume unit,RVE,was established,and the influences of temperature on the mechanical properties of carbon black filled rubber composites was simulated through the ABAQUS.By adopting plane strain model to proceed uni-axial tension,applying periodic boundary conditions to ensure the coordination of deformation of RYE.This article is mainly focused on the effect on stress at definite elongation (SE) and the effective elastic modulus created by temperature and volume fraction,and the distribution of thermal residual stress.Research shows that,under the same condition of the temperature,the SE will increase non-linearly along with the increase of particle volume fraction;thermal residual stresses have effects on stress-strain response of the composites and cause a decrease in the tensile strength;with the increase of temperature,the value of SE gradually decline,showing that the higher the temperature is,the smaller the extension resistance is,and the mechanical properties are easier to damage.
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