基于ANSYS的两种轴孔过盈配合模型

Two Types of Shaft and Hole Inference Fitting Models Based on ANSYS

基于ANSYS有限元软件,研究分析了几何过盈和接触单元实常数CNOF过盈的实体模型和平面应力模型的设置方法。结论表明,轴孔过盈配合的实体模型和横截面平面应力模型接触单元关键字KEYOPT(9)设置相同,均能得到一致的结果。但轴对称平面应力模型,几何过盈或穿透将被忽略,而接触单元实常数CNOF过盈模型的接触单元关键字设置与上述两种模型相同,三种CNOF轴孔过盈模型均得到了一致的计算结果。

Based on FEA software ANSYS,the geometrical interference and contact element real constant CNOF interference setting options for solid model and plane stress model were studied.The results indicated that solid model and plane stress model were set the same contact element key option KEYOPT（9） value,which could get the same results.But the geometrical interference or penetration would be ignored in axisymmetric plane stress model.When the interference value was set by the same contact element real constant CNOF of axisymmetric plane stress model as the upper two proposed models.On this condition,these three kinds of shaft and hole interference fitting models could achieved the same simulation result.