[1]张扬,武振宇.考虑损伤发展的钢材混合强化本构模型[J].东南大学学报(自然科学版),2011,41(2):331-335.[doi:10.3969/j.issn.1001-0505.2011.02.023]
 Zhang Yang,Wu Zhenyu.Mixed hardening constitutive model of steel considering damage evolution[J].Journal of Southeast University (Natural Science Edition),2011,41(2):331-335.[doi:10.3969/j.issn.1001-0505.2011.02.023]
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考虑损伤发展的钢材混合强化本构模型()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第2期
页码:
331-335
栏目:
土木工程
出版日期:
2011-03-20

文章信息/Info

Title:
Mixed hardening constitutive model of steel considering damage evolution
作者:
张扬武振宇
(哈尔滨工业大学土木工程学院,哈尔滨 150090)
Author(s):
Zhang YangWu Zhenyu
(School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China)
关键词:
损伤本构模型滞回性能有限元分析
Keywords:
damage constitutive model hysteretic behavior finite element analysis
分类号:
TU313.3
DOI:
10.3969/j.issn.1001-0505.2011.02.023
摘要:
为了更准确地模拟往复荷载作用下金属材料的劣化,在大变形弹塑性理论及损伤力学理论的基础上,采用双线性混合强化模型及Lemaitre损伤模型建立了可考虑损伤发展的混合强化弹塑性本构模型.提出了利用单轴拉伸材料常数计算损伤材料参数的近似方法.利用有限元程序ANSYS的用户可编程特性,将所编制的材料模型子程序嵌入ANSYS程序,对文献中的厚铝环拉压试验及工字钢构件滞回性能试验进行了有限元模拟,计算所得的荷载位移曲线及裂纹萌生寿命均与试验结果吻合较好.
Abstract:
For more accurately simulating the metallic material degradation induced by cyclic load, elasto-plastic material model considering damage evolution and mixed hardening is presented based on the large strain elasto-plastic theory and the damage mechanics theory. Bi-linear mixed hardening model and Lemaitre’s damage model are adopted. Making use of the material properties from tensile experiment, an approximation method for calculating the damage material parameters is presented. Using the user programmable features (UPFs) of ANSYS program, the material routine is developed and incorporated into ANSYS program. The hysteretic tests of a thick ring and steel members are simulated using the material model. The hysteretic curve and the crack initiation life from FE (finite element) analysis agree well with the results from the tests.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:张扬(1984—),男,博士生;武振宇(联系人),男,博士,教授,博士生导师,wuzhenyu@hit.edu.cn.
基金项目:国家自然科学基金资助项目(50978076).
引文格式: 张扬,武振宇.考虑损伤发展的钢材混合强化本构模型[J].东南大学学报:自然科学版,2011,41(2):331-335.[doi:10.3969/j.issn.1001-0505.2011.02.023]
更新日期/Last Update: 2011-03-20