基于解析方法的TANH材料本构模型研究

doi:10.3901/JME.2020.09.252

机械工程学报 ›› 2020, Vol. 56 ›› Issue (9): 252-264.doi: 10.3901/JME.2020.09.252

• 制造工艺与装备 • 上一篇

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基于解析方法的TANH材料本构模型研究

郝小乐¹, 岳彩旭¹, 陈志涛¹, 刘献礼¹, LIANG S Y², WANG Lihui³, 严复钢¹

1. 哈尔滨理工大学先进制造智能化技术教育部重点实验室哈尔滨 150080;
2. 佐治亚理工学院乔治·W·伍德拉夫机械工程学院亚特兰大 30332 美国;
3. 瑞典皇家理工学院斯德哥尔摩 25175 瑞典

收稿日期:2019-05-12 修回日期:2019-10-15 出版日期:2020-05-05 发布日期:2020-05-29
通讯作者: 岳彩旭(通信作者),男,1982年出生,博士,副教授,博士研究生导师。主要研究方向为硬态切削理论、切削过程建模仿真及切削过程稳定性。E-mail:yuecaixu@hrbust.edu.cn
作者简介:郝小乐,男,1994年出生。主要研究方向为切削机理及已加工表面完整性。E-mail:18348550143@163.com;陈志涛,男,1982年出生。主要研究方向为金属切削机理和工艺优化。E-mail:zhitao19@163.com;刘献礼,男,1961年出生,博士,教授,博士研究生导师。主要研究方向为金属切削理论、刀具设计技术、数字化加工技术。E-mail:xlliu@hrbust.edu.cn;LIANG S Y,男,1958年出生,博士,教授,博士研究生导师。主要研究方向为智能制造、超精密加工技术。E-mail:steven.liang@me.gatech.edu;WANG Lihui,男,1959年出生,博士,教授,博士研究生导师。主要研究方向为切削加工工艺规划,分布式工艺系统规划。E-mail:lihui.wang@iip.kth.se;严复钢,男,1960年出生,高级工程师,硕士研究生导师。主要研究方向为重型铣削。E-mail:yfg2988@163.com
基金资助:
国家自然科学基金国际合作重点（51720105009）和哈尔滨理工大学“理工英才”计划杰出青年（LGYC2018JQ015）资助项目。

Research on TANH Material Constitutive Model Based on Analytical Method

HAO Xiaole¹, YUE Caixu¹, CHEN Zhitao¹, LIU Xianli¹, LIANG S Y², WANG Lihui³, YAN Fugang¹

1. Key Laboratory of Advanced Mannfactuning and Intellignet Technology Ministry of Education, Harbin University of Science and Technology, Harbin 150080;
2. George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta 30332, USA;
3. KTH Royal Institute of Technology, Stockholm 25175, Sweden

Received:2019-05-12 Revised:2019-10-15 Online:2020-05-05 Published:2020-05-29

摘要/Abstract

摘要： TANH材料本构模型在Johnson-Cook（J-C）材料本构模型基础上考虑了应变软化，可以进一步揭示切削过程中大变形高应变速率下材料的本质属性。为了验证TANH材料本构模型修正系数优化方法的精度，针对典型难加工材料Ti6Al4V的车削过程，在考虑热力耦合效应的基础上建立了基于TANH材料本构模型的正交切削力预测模型，切削力试验结果与预测结果吻合良好。同时，揭示了TANH材料本构模型修正系数与切削力之间的联系。基于TANH材料本构模型所建立的切削力预测模型输入参数仅包括切削用量、刀具几何参数和材料物理参数。提出了一种TANH材料本构模型修正系数选择区间的优化方法，并分析了切削力受TANH材料本构模型修正系数变化的敏感度，然后对修正系数进行了优化，在保证精度的前提下提高了切削力仿真效率。修正系数优化后的TANH材料本构模型明显捕捉到了应变硬化率对应变速率的依赖特性。研究结果为TANH本构模型深入研究及应用提供了理论基础。

关键词: TANH材料本构模型, 热力耦合, 切削力预测模型, 应变硬化率, 敏感度分析

Abstract: The TANH material constitutive model accounts for strain softening effect based on the Johnson-Cook (J-C) material constitutive model, which can further reveal the essential properties of the material under the large deformation and high strain rate during the cutting process. In order to verify the accuracy of the method that optimizes the correction coefficient of the TANH material constitutive model, in view of the turning process of the typical difficult-to-machine material Ti6Al4V, based on the TANH material constitutive model, a model for predicting orthogonal cutting forces is established, which considers thermal coupling. The experimental results are in good agreement with the simulation result. In addition, the relationship between the correction coefficient of the TANH material constitutive model and the cutting force is revealed. The input of the force prediction model based on the THAN material constitutive model consist of only the cutting condition, tool geometry parameter and the material's physical parameters. A method for optimizing the selection interval of the correction coefficient of the TANH material constitutive model is proposed. The sensitivity of the cutting force to the correction coefficient in the TANH material constitutive model is analyzed. Then the correction coefficient is optimized and improves the simulation efficiency of cutting force under the premise of ensuring accuracy. The TANH material constitutive model whose correction coefficient is optimized clearly captures the dependence of the strain hardening rate on strain rate. The research results provide theoretical basis for the in-depth study and application of the TANH constitutive model.

Key words: TANH material constitutive model, thermal coupling, force prediction model, strain hardening rate, sensitivity analysis

中图分类号:

TG146

郝小乐, 岳彩旭, 陈志涛, 刘献礼, LIANG S Y, WANG Lihui, 严复钢. 基于解析方法的TANH材料本构模型研究[J]. 机械工程学报, 2020, 56(9): 252-264.

HAO Xiaole, YUE Caixu, CHEN Zhitao, LIU Xianli, LIANG S Y, WANG Lihui, YAN Fugang. Research on TANH Material Constitutive Model Based on Analytical Method[J]. Journal of Mechanical Engineering, 2020, 56(9): 252-264.

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基于解析方法的TANH材料本构模型研究

Research on TANH Material Constitutive Model Based on Analytical Method

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