基于多尺度广义自洽模型对耐火材料损伤过程的模拟

• 作 者: 刘昌明 王志刚 李友荣 熊智强
• 机 构: 武汉科技大学机械传动与制造工程湖北省重点实验室,武汉科技大学耐火材料与高温陶瓷省部共建国家重点实验室培育基地,
• 出 处: 北京科技大学学报
• 发表日期: 2011年04期
• 关键词: 损伤过程 耐火材料 自洽 损伤 尺度 模拟 细观力学 界面 受压状态 弹性模量

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.

Based on the hypothesis that the material has different damage mechanisms under tension and compression, the damage process of refractory material under two kinds of loading conditions is carried out under the condition of constant temperature by using meso-mechanics and multi-scale generalized self-consistent model A new method to simulate the nonlinear damage behavior of refractory materials under tensile and compression loads was proposed.The magnesia carbonaceous refractory material was taken as an example to simulate the damage of materials under tension and pressure respectively.The results show that , This method can simulate the nonlinear mechanical behavior of the refractory material and the experimental results can be well matched.