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基于试验的ABAQUS混凝土塑性损伤参数取值方法 预览 被引量:9

Determination of Damage Parameter of ABAQUS CDP Model Based on Test Data
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摘要 在ABAQUS的混凝土塑性损伤本构中,塑性损伤参数是影响钢筋混凝土构件行为的重要参数,其取值不仅影响卸载或反向加载的刚度,且直接对构件应变成分有很大影响.对国内外多组混凝土单轴往复压、拉试验数据进行统计分析及数据拟合,提出了一种新的塑性损伤参数的取值方法.与其他方法的比较及数值试验均表明,该方法能较准确地反映真实的混凝土退化特性,并且相对于其他损伤参数取值方法形式更为简洁,便于使用. The damage parameter in ABAQUS Concrete Damaged Plasticity model plays an important role in defining the behavior of reinforced concrete members for that it has remarkable influence on not only the unloading and cyclic loading stiffness of concrete but also the ratio of plastic strains to elastic ones. A number of test data was collected and analyzed. By adopting the data fitting scheme, a new approach of determining the parameter is put forward based on these data. The comparison of the damage parameter attained from this study and those calculated via other formulas as well as a numerical test are conducted. The results reveal that the method is capable of accurately reflecting the material deterioration while remaining its conciseness and applicability comparing with other approaches.
作者 李伟琛 韩小雷 崔济东 LI Weichen HAN Xiaolei CUI Jidong ( Department of Civil Engineering, School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China)
出处 《结构工程师》 北大核心 2016年第2期64-69,共6页 Structural Engineers
基金 国家自然科学基金项目(51378221)
关键词 混凝土塑性损伤本构 损伤参数 混凝土单轴试验 曲线拟合 concrete damaged plasticity, ABAQUS, damage parameter, axial test of concrete, curve fitting
作者简介 联系作者,Email:liweichen_scm@163.com
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参考文献21

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