摘要
采用硅铝合金(含Si 13.5%)为铸件材料,45号钢为铸型材料,引入铸造数值模拟重要的边界条件界面传热系数,同时改变铸型厚度,利用有限元分析软件ANSYS模拟了金属铸造过程温度场的分布规律,分析了铸型厚度变化对铸造温度场分布的影响。结果表明:引入界面传热系数可提高数值模拟的准确性;增加铸型壁厚可提高铸件凝固速度,当铸型壁厚增加到一定厚度后,对凝固速度的影响减弱以至消失。
In the follow experiment, this paper used silicon aluminum alloy （containing 13.5% Si） as casting material. And 45 steel as mold material. The interfacial heat transfer coefficient, which is the important bound- ary condition, was introduced in numerical simulation. And the thickness of the mold was changed. The distri- bution regularity of the temperature field in casting solidification was simulated used the finite element software ANSYS. In addition, it also changed the casting thickness of the mold to analyze the effect of the distribution of casting temperature field. Finally the resuhs indicate that the numerical simulation accuracy can be improved by introducing the interracial heat transfer coefficient. Furthermore, the solidification rate can be improved by rai- sing the casting thickness of the mold. In the process of the numerical simulation, when the mold wall-thickness was increased to a certain thickness, the affection was mitigated and almost eliminated.
出处
《重型机械》
2016年第4期40-43,共4页
Heavy Machinery
基金
大学生创新创业训练计划项目(201410060034)
关键词
ANSYS
金属铸造
界面传热系数
有限元分析
温度场
ANSYS
metal casting
interfacial heat transfer coefficient
finite element analysis
temperature field
作者简介
王启才（1991-），男，研究方向：计算机辅助工程分析。
