复合材料液态浸渗挤压过程浸渗和传热行为的耦合分析  

COUPLED ANALYSIS OF INFILTRATION AND HEAT TRANSFER BEHAVIOR IN LIQUID INFILTRATION EXTRUSION OF COMPOSITES

作　　者：姜春晓[1] 杨方[1] 齐乐华[1] 

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《机械工程学报》2004年第10期10-14,共5页Journal of Mechanical Engineering

基　　金：国家自然科学基金(No.50175091);陕西省自然科学基金(2001C17);国防预研基金(51412010304HK0339)资助项目

摘　　要：采用有限元法模拟液态浸渗挤压复合材料浸渗过程温度场,采用有限差分法模拟液态金属渗流场,将两者耦合分析计算,利用FORTRAN语言编程和ANSYS软件得到了浸渗区的温度变化曲线、浸渗前沿及浸渗速度随时间的变化等曲线。对模拟结果分析研究表明,纤维半径、浸渗压力、液态金属粘度系数和预制体体积分数等影响液态金属的浸渗速度及浸渗过程;选用合适的工艺参数,可以获得理想的浸渗区温度分布,从而为合理选择浸渗过程的工艺参数奠定了理论基础。The temperature fields during liquid infiltration extrusion of composites are simulated with the finite element method, the seepage fields of liquid metal are simulated with the finite difference method. Temperature fields and seepage fields are coupled and calculated, then the temperature variation curves, infiltration front process curves and velocity variation curves along with time are got by FORTRAN program and ANSYS software. The results indicate that the fiber radius, infiltration pressure, liquid metal viscosity coefficient and the volume fraction of perform affect the infiltration velocity of liquid metal and the infiltration process. The ideal temperature distribution in filtrated region may be got through selecting the appropriate process parameters. The analysis for the simulation results provide theoretic basis for the rational choice of the process parameters.

关 键 词：液态浸渗挤压 金属基复合材料 达西定律 耦合分析 

分 类 号：O242[理学—计算数学] TB323[理学—数学]