| 轴向冲击荷载作用下钢管混凝土短柱有限元分析 |
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| 引用本文： | 张晨,徐勋倩. 轴向冲击荷载作用下钢管混凝土短柱有限元分析[J]. 四川建筑科学研究, 2011, 0(4): 30-33 |
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| 作者姓名： | 张晨 徐勋倩 |
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| 作者单位： | 南通大学建筑工程学院 |
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| 基金项目： | 江苏省高校自然科学基金资助项目(10KJD560001);南通大学自然科学基金资助项目(07z070);南通大学博士科研启动基金(08B16);南通市科技计划项目(K2009018) |
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| 摘 要： | 利用ANSYS-DYNA进行了钢管混凝土短柱抗冲击性能有限元分析研究,通过分析应力、应变时程曲线,获得对其抗动力冲击性能的了解。构件受力时,外围钢管的应力远远大于内部混凝土的应力;试件应力、应变时程曲线表现出典型弹塑性材料的性质,数值增加到最大值后递减,最终形成残余应力、应变。结果表明,钢管混凝土具有良好的抗冲击力学性能,即具有较高的强度和屈服后承载能力,以及良好的塑性变形能力。
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| 关 键 词： | ANSYS-DYNA 钢管混凝土短柱 抗冲击性能 有限元分析 |
Finite element analysis of concrete filled steel tube short columns under axial impact load |
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| Affiliation: | ZHANG Chen,XU Xunqian(Nantong University,Nantong 226019,China) |
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| Abstract: | The impact behavior of concrete-filled steel tube(CFST) short columns was studied by using software ANSYS-DYNA.The stress and strain time history curves of the tested specimens were recorded to analyze the impact behavior of CFST.While the specimens are impacted,the stress of the steel tube is higher than that of the concrete;the specimens are typical elastic-plastic material according to the shape of the stress or strain time history curves;the value of stress or strain increases to maximum value,then it decreases to residual stress or strain.The results demonstrate that the CFST has an excellent impact-resistant behavior,i.e.relatively higher strength and post-yielding strength,excellent plasticity. |
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| Keywords: | ANSYS-DYNA concrete filled steel tube short column impact-resistant behavior finite element analysis |
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