防护罩砂型铸造模加工与温度场有限元分析  

Sand casting mold processing for protective cover and the finite element analysis of temperature field

作　　者：赵大民[1] 

机构地区：[1]辽宁轨道交通职业学院,辽宁沈阳110023

出　　处：《模具工业》2017年第7期33-37,共5页Die & Mould Industry

摘　　要：以一种防护罩为研究对象,根据图形的解析几何性质列出特殊点坐标值的非线性方程组,使用二分迭代法建立了方程组求解各值的数学模型。在编程软件中编制计算器,完成特殊点坐标值的计算,并且编写了防护罩砂型铸造模的数控车削加工程序。在有限元分析软件中进行建模,充分考虑铸铁和型砂材料的导热系数、密度等,对整个铸造模型进行了瞬态温度场的有限元模拟,得出了温度场分布云图,根据温度场云图确定了铸件的冷却时间。Taking the protective cover as a research object, the nonlinearity equations for co- ordinate value of pivotal points were listed according to the graphic nature of analytic ge- ometry, and the mathematical model for solving the value in the equations was established by using the bisected iteration method. A calculator was compiled in programming software to accomplish the calculation of special point coordinate value, and the NC turning machin- ing program of sand casting mold for protective cover was written. Using the finite ele- ment analysis software to establish the model, the thermal conductivity, density of iron and sand should be taken a full consideration. Finally, the finite element simulation of transient temperature distribution for the whole casting mode was carried out, and the temperature field distribution cloud atlas was obtained, also the cooling time was confirmed according to the temperature field.

关 键 词：防护罩 二分法 计算器 数控加工 温度场 有限元 

分 类 号：TG76[金属学及工艺—刀具与模具] TP399[自动化与计算机技术—计算机应用技术]