DETERMINATION OF DAMAGE PARAMETERS OF SHEAR MODIFIED GTN MODEL BY RESPONSE SURFACE METHOD

SUN Quan; LU YeBo; CHEN JianJun

doi:10.16579/j.issn.1001.9669.2019.06.029

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DETERMINATION OF DAMAGE PARAMETERS OF SHEAR MODIFIED GTN MODEL BY RESPONSE SURFACE METHOD

更新时间：2022-09-22

- DETERMINATION OF DAMAGE PARAMETERS OF SHEAR MODIFIED GTN MODEL BY RESPONSE SURFACE METHOD
- Journal of Mechanical Strength Vol. 41, Issue 6, Pages: 1460-1465(2019)
- 作者机构：
  
  1. 嘉兴学院机电工程学院
  2. 华东理工大学机械与动力工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2019.06.029
  CLC：
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SUN Quan, LU YeBo, CHEN JianJun. DETERMINATION OF DAMAGE PARAMETERS OF SHEAR MODIFIED GTN MODEL BY RESPONSE SURFACE METHOD. [J]. 41(6):1460-1465(2019)
DOI：

SUN Quan, LU YeBo, CHEN JianJun. DETERMINATION OF DAMAGE PARAMETERS OF SHEAR MODIFIED GTN MODEL BY RESPONSE SURFACE METHOD. [J]. 41(6):1460-1465(2019) DOI： 10.16579/j.issn.1001.9669.2019.06.029.

摘要

采用Nahshon-Hutchinson剪切修正GTN损伤模型对小冲杆试验进行有限元仿真。以硅钢板为研究对象,基于有限元仿真和因子试验设计方法,研究了损伤演化参数对小冲杆试验载荷-位移曲线的影响程度,得出影响模拟准确性的关键参数为f,N,、ε,N,、k,s,并应用响应曲面法确定了这些参数的取值;断裂参数f,c,、f,F,以小冲杆试验载荷-位移曲线模拟和实验结果对比的方法进行标定。最后,基于不同厚度的小冲杆试样进行实验和模拟结果对比,验证了所确定参数的有效性。

Abstract

The Nahshon-Hutchinson shear modified GTN damage model was used to simulate the mechanical and damage behavior of small punch test（ SPT）,where the study material is silicon steel. Based on finite element simulation and factorial experimental design method,the influence degree of the damage evolution parameters on the SPT load-displacement curve were evaluated,and three key impact damage evolution parameters（ f,N,ε,N,k,s,） were identified,the response surface method（ RSM）was then used to determinate the three key damage parameters. The facture parameters（ fc,fF） was determined by comparing the SPT load-displacement curve obtained by simulation and experimental results. Finally the effective of the identified parameters were verified by SPT experiments with different specimen thickness.

关键词

小冲杆试验GTN模型有限元法模拟响应面法

Keywords

Small punch testGTN damage modelFinite element method simulationResponse surface method

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