| 一种非比例振型阻尼模型及在大规模非线性分析中的应用 |
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| 引用本文： | 曹胜涛, 李志山, 刘付钧. 一种非比例振型阻尼模型及在大规模非线性分析中的应用[J]. 工程力学, 2018, 35(11): 162-171. DOI: 10.6052/j.issn.1000-4750.2017.08.0640 |
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| 作者姓名： | 曹胜涛 李志山 刘付钧 |
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| 作者单位： | 1.广州大学广东省地震工程与应用技术重点实验室, 广州 510405;;2.中国建筑科学研究院, 北京 100013;;3.广州容柏生建筑结构设计事务所, 广州 510170 |
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| 基金项目： | 十三五高性能计算重点专项项目（2016YFB0200605） |
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| 摘 要： | 该文通过有限元模型的节点振型阻尼比构造了一种非比例振型阻尼模型；给出了非线性显式格式中该文模型阻尼力的高效算法，并结合实际工程对显式求解的稳定性进行了分析。将该文提出的非比例阻尼模型和高效算法在自主研发的CPU+GPU并行非线性分析软件中进行实现，对有限元模型自由度数达到百万量级的超高层钢-混凝土混合结构广西东盟塔进行动力时程分析，对该文并行算法的效率和非比例阻尼对结构动力响应的影响进行了研究。
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| 关 键 词： | 节点振型阻尼比 非比例振型阻尼模型 非线性显式动力分析 CPU+GPU并行计算 混合结构 |
| 收稿时间： | 2017-08-23 |
| 修稿时间： | 2018-03-16 |
A NON-PROPORTIONAL MODAL DAMPING MODEL AND ITS APPLICATION IN NONLINEAR ANALYSIS OF LARGE-SCALE STRUCTURES |
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| CAO Sheng-tao, LI Zhi-shan, LIU Fu-jun. A NON-PROPORTIONAL MODAL DAMPING MODEL AND ITS APPLICATION IN NONLINEAR ANALYSIS OF LARGE-SCALE STRUCTURES[J]. Engineering Mechanics, 2018, 35(11): 162-171. DOI: 10.6052/j.issn.1000-4750.2017.08.0640 |
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| Authors: | CAO Sheng-tao LI Zhi-shan LIU Fu-jun |
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| Affiliation: | 1.Earthquake Engineering Research & Test Center of Guangzhou University, Guangzhou 510405, China;;2.China Academy of Building Research, Beijing 100013, China;;3.RBS Architectural Engineering Design Associates, Guangzhou 510170, China |
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| Abstract: | A non-proportional modal damping model was proposed by the nodal mode-damping-ratio of a finite element model. The efficient algorithm of the damping force was presented in a nonlinear explicit format. Base on practical engineering, the stability of the explicit format was analyzed. The non-proportional damping model and efficient algorithm were implemented in CPU+GPU parallel nonlinear software. The dynamic time history response of a super high-rise steel-concrete structure, Guangxi Dongmeng tower, with millions degrees of freedom was analyzed by this software. The efficiency of parallel algorithms and the effect of non-proportional damping on the dynamic response of the structure were studied. |
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| Keywords: | nodal mode-damping-ratio non-proportional modal damping model nonlinear explicit dynamic analysis CPU+GPU parallel computing mixed structure |
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