[1]潘华,邱洪兴.基于损伤力学的混凝土疲劳损伤模型[J].东南大学学报(自然科学版),2006,36(4):605-608.[doi:10.3969/j.issn.1001-0505.2006.04.023]
 Pan Hua,Qiu Hongxing.Fatigue model of concrete based on continuum damage mechanics[J].Journal of Southeast University (Natural Science Edition),2006,36(4):605-608.[doi:10.3969/j.issn.1001-0505.2006.04.023]
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基于损伤力学的混凝土疲劳损伤模型()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
36
期数:
2006年第4期
页码:
605-608
栏目:
材料科学与工程
出版日期:
2006-07-20

文章信息/Info

Title:
Fatigue model of concrete based on continuum damage mechanics
作者:
潘华 邱洪兴
东南大学土木工程学院, 南京 210096
Author(s):
Pan Hua Qiu Hongxing
College of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
混凝土 损伤力学 疲劳损伤 耗散势
Keywords:
concrete continuum damage mechanics(CDM) fatigue damage energy dissipation
分类号:
TU528.01
DOI:
10.3969/j.issn.1001-0505.2006.04.023
摘要:
为了研究混凝土在疲劳荷载作用下力学性能不断劣化过程,从连续介质损伤力学的基本理论出发,根据混凝土的材料性能选定合理的耗散势函数,用残余应变来定义混凝土的损伤量,得到关于残余应变的损伤变量表达式; 分析混凝土疲劳损伤的发展规律,选用合适的混凝土微塑性应变方程,推导混凝土在疲劳荷载下的损伤发展率,得到混凝土损伤变量与疲劳次数的关系,从而建立混凝土疲劳损伤模型; 利用疲劳实验数据验证模型形式的正确性,并确定模型的参数; 由此建立耦合损伤变量的混凝土本构关系模型,可用于疲劳荷载作用下混凝土的有限元分析.
Abstract:
To study the process of concrete mechanical performance degradation under fatigue load, according to continuum damage mechanics the damage is defined in terms of residual strain and the damage equation is deduced based on concrete fatigue performance and reasonable dissipation function. The cumulative damage law of concrete fatigue is investigated and the damage evolution equation is created according to selected appropriate micro plastic deformation expression; the relationship of damage and cyclic number of fatigue is obtained. The fatigue test data validate the modal’s general format and the modal parameters are determined. The concrete constitutive properties coupling damage can be used for finite element analysis of concrete under fatigue load.

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备注/Memo

备注/Memo:
基金项目: 江苏省“六大人才高峰”资助项目、江苏省建设厅资助项目(JS200215).
作者简介: 潘华(1979—),男,博士生; 邱洪兴(联系人),男,博士,教授,博士生导师,qiuhx@seu.edu.cn.
更新日期/Last Update: 2006-07-20