基于多尺度广义自洽模型对耐火材料损伤过程的模拟

Simulation of the damage of refractory materials based on a multi-scale generalized self-consistent model

摘要: 基于材料在受拉和受压状态下损伤机理不同的假设,在恒温条件下,以细观力学以及多尺度广义自洽模型为手段,分别对耐火材料在两种受载状态下的损伤过程进行了研究,提出了一种模拟耐火材料在承受拉压载荷下非线性损伤行为的方法.以镁碳质耐火材料为例,分别对材料在受到拉力和受到压力过程的损伤进行了模拟.结果表明,运用此方法对耐火材料的非线性力学行为进行模拟与试验结果能够较好的吻合.

Abstract: Based on the assumption that the damage mechanisms of materials under tension and compression are different,the nonlinear damaging behavior of refractory materials was studied by micro-mechanics and a multi-scale generalized self consistent scheme(GSCS) model at constant temperature.A method of simulating the nonlinear damage behavior of refractory materials under loading was put forward.By utilizing this technique,the damage of magnesium carbon refractory was simulated under tension and compression.The results of simulation are in agreement with experimental data.