中国机械工程 ›› 2012, Vol. 23 ›› Issue (18): 2243-2248.

• 材料工程 • 上一篇    下一篇

0Cr18Ni9不锈钢本构模型及其对切削力预测影响分析

凌玲;李星星;王学林;胡于进   

  1. 华中科技大学,武汉,430074
  • 出版日期:2012-09-25 发布日期:2012-09-29
  • 基金资助:
    国家重点基础研究发展计划(973计划)资助项目(2009CB724306)
    National Program on Key Basic Research Project (973 Program)(No. 2009CB724306)

Constitutive Model of  Stainless Steel 0Cr18Ni9 and Its Influence on Cutting Force Prediction

Ling Ling;Li Xingxing;Wang Xuelin;Hu Yujin   

  1. Huazhong University of Science and Technology,Wuhan,430074
  • Online:2012-09-25 Published:2012-09-29
  • Supported by:
    National Program on Key Basic Research Project (973 Program)(No. 2009CB724306)

摘要:

利用MTS材料试验机和分离式Hopkinson压杆(SHPB)实验装置对经过1100℃固溶处理后的0Cr18Ni9不锈钢的静态力学性能和动态力学性能进行了测量,用Johnson-Cook模型拟合了材料的本构关系,用正交切削实验识别了Johnson-Cook模型材料参数。将SHPB实验和切削实验两种方法得到的Johnson-Cook材料模型应用于切削力的预测,分析了不同实验方法得到的材料模型在切削力的预测中的适用性,为不锈钢切削研究中的分析模型和数值计算中的材料流动应力模型选择提供参考。

关键词: 0Cr18Ni9不锈钢, Johnson-Cook, 本构关系, 切削力预测

Abstract:

The static and dynamic mechanical properties of stainless steel 0Cr18Ni9,with solution heat treatment under temperature 1100℃, were analyzed herein,through experiments with material testing system(MTS) and split Hopkinson pressure bar(SHPB) apparatus.On the basis of  the above work,the constitutive
 relations of the material were built using Johnson-Cook constitutive model.In addition,the material parameters of  the model were observed by using the orthogonal experimental design.The two sets of the material parameters obtained from SHPB and cutting test were applied to predict cutting force under various machining conditions,and their applicability was compared.The comparison results provide the reference for the analysis model in stainless steel cutting research as well as the selection of material flow stress model during numerical computation. 

Key words: 0Cr18Ni9 stainless steel, Johnson-Cook, constitutive model, cutting force prediction

中图分类号: