| 模拟混凝土滞回行为的各向异性损伤模型 |
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| 引用本文： | 龙渝川,李正良. 模拟混凝土滞回行为的各向异性损伤模型[J]. 工程力学, 2011, 0(8): 62-69 |
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| 作者姓名： | 龙渝川 李正良 |
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| 作者单位： | 重庆大学土木工程学院;重庆大学山地城镇建设与新技术教育部重点实验室; |
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| 基金项目： | 国家自然科学基金项目(50909109); 教育部高等学校博士学科点科研基金项目(20090191120031); 中央高校基本科研业务费资助项目(CDJRC10200005,CDJZR10200006) |
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| 摘 要： | 该文引入相互独立的拉损伤、压损伤演化规律，分别描述受拉开裂和受压破碎导致的混凝土损伤行为，然后采用非线性卸载．线性重加载模拟滞回行为，建立了改进的各向异性损伤模型。该文还建议了模型关键参数的率定方法。应用该模型模拟混凝土受拉和拉一压往复加载试验，计算获得的应力-应变曲线与试验曲线具有良好的可比性，能够反映损伤导致的刚度...
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| 关 键 词： | 混凝土 连续介质损伤力学 各向异性损伤模型 滞回能量耗散 刚度恢复效应 参数率定 |
AN ANISOTROPIC DAMAGE MODEL FOR SIMULATING THE HYSTERETIC BEHAVIOR OF CONCRETE UNDER CYCLIC LOADING |
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| LONG Yu-chuan,,LI Zheng-liang. AN ANISOTROPIC DAMAGE MODEL FOR SIMULATING THE HYSTERETIC BEHAVIOR OF CONCRETE UNDER CYCLIC LOADING[J]. Engineering Mechanics, 2011, 0(8): 62-69 |
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| Authors: | LONG Yu-chuan LI Zheng-liang |
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| Affiliation: | LONG Yu-chuan1,2,LI Zheng-liang1,2(1.School of Civil Engineering,Chongqing University,Chongqing 400045,China,2.Key Laboratory of Chinese Education Ministry for City-Building in Mountain Area and New Techniques,China) |
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| Abstract: | A modified anisotropic damage model is developed by introducing two independent damage evolution rules to simulate the distinct behaviors of concrete due to tensile cracking and compressive crushing.Herein,the hysteretic behavior under cyclic loading is modeled using nonlinear unloading-linear reloading stress branches.The calibrating method of key parameters is also proposed.Subsequently,the model is used to analyze the response of concrete under cyclic tension and tensile-low compressive load.The stress-s... |
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| Keywords: | concrete continuum damage mechanics anisotropic damage model hysteretic energy dissipation stiffness recovery effect parameter calibration |
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