上海交通大学学报

上海交通大学学报 >

2017 , Vol. 51 >Issue 8: 1013 - 1017

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2017.08.017

兵器工业

 基于多损伤参量的P92钢蠕变变形模拟

  • ZHANG Wei1 ,
  • 2 ,
  • WANG Xiaowei1 ,
  • 2 ,
  • 3 ,
  • JIANG Yong1 ,
  • 2 HUANG Xin1 ,
  • 2 ,
  • GONG Jianming1 ,
  • 2 ,
  • WENG Xiaoxiang1 ,
  • 2
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  •  1. 南京工业大学  机械与动力工程学院， 南京 211816；
    2. 江苏省极端承压装备设计与制造重点实验室， 南京 211816；
    3. 比利时根特大学  材料科学与工程学院， 兹维纳尔德 B9052

网络出版日期: 2017-08-30

基金资助

 

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 Simulation of Creep Deformation for P92 Steel Based on
 Multiple Damage Parameters

  • 张威1 ,
  • 2，王小威1 ,
  • 2 ,
  • 3，姜勇1 ,
  • 2，黄鑫1 ,
  • 2，巩建鸣1 ,
  • 2，翁晓祥1 ,
  • 2
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  •  1. School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China;
    2. Jiangsu Key Lab of Design and Manufacture of Extreme Pressure Equipment, Nanjing 211816, China;
    3. Department of Materials Science and Engineering, Ghent University, B9052 Zwijnaarde, Belgium

Online published: 2017-08-30

Supported by

 

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摘要

 在连续损伤力学框架内，采用2种损伤状态变量模型来描述P92钢在650℃下的软化、损伤的起始及扩展机制.在分析连续损伤方程及已有的相关蠕变试验数据的基础上，提出了蠕变连续损伤方程参数的确定方法并得到650℃下P92钢蠕变连续损伤方程.结果表明：通过蠕变试验数据得到的损伤参量确定的蠕变连续损伤方程，可以很好地模拟P92钢在650℃下的蠕变变形，多损伤参量连续损伤方程也可以很好地外推至其他应力水平.基于多损伤参量的连续损伤方程可以从非弹性应变速率、内应力及微观结构的演化行为方面对蠕变变形进行较好地描述，具有工程使用价值.

关键词：  P92钢； 蠕变； 多损伤参量； 变形模拟

本文引用格式

ZHANG Wei1 , 2 , WANG Xiaowei1 , 2 , 3 , JIANG Yong1 , 2 HUANG Xin1 , 2 , GONG Jianming1 , 2 , WENG Xiaoxiang1 , 2 .  基于多损伤参量的P92钢蠕变变形模拟[J]. 上海交通大学学报, 2017 , 51(8) : 1013 -1017 . DOI: 10.16183/j.cnki.jsjtu.2017.08.017

Abstract

 A twodamage state variable model was used to describe the softening, damage initiation and growth mechanisms of P92 steel at 650℃ under the continuous damage mechanics framework. Based on the analysis of existed creep experimental data and creep model, a methodology was proposed to determine the constitutive constants of P92 steel at 650℃. It was shown that the constitutive constants obtained from analysis of creep experimental data could simulate the creep deformation of P92 steel at 650℃ precisely, and the constitutive equations with multiple damage parameters could be extrapolated to other stress levels. The continuous damage equations based on the multiple damage parameters can give a good description of creep deformation from terms of inelastic strain rate, inner stress and microstructural evolution. Therefore, the study is of profound practical significance in engineering.

Key words：   P92 steel; creep; multiple damage parameters; deformation simulation

参考文献

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