| 损伤引起加筋板结构屈曲性态变异研究 |
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| 引用本文： | 张强, 洪明. 损伤引起加筋板结构屈曲性态变异研究[J]. 中国舰船研究, 2007, 2(1): 24-29. DOI: 10.3969/j.issn.1673-3185.2007.01.005 |
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| 作者姓名： | 张强 洪明 |
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| 作者单位： | 大连理工大学船舶工程系,辽宁大连116024 |
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| 摘 要： | 将损伤力学的相关原理引入到船舶常用加筋板结构的稳定性分析中,建立含损伤结构稳定的有限元分析模型。通过引入损伤位置、损伤程度和损伤面积三个独立的损伤参数来描述结构的受损状况,并分别分析它们的变化对结构临界屈曲载荷和屈曲模态产生的影响。对加筋板结构在各种载荷条件下的屈曲行为作了探讨,并通过对典型算例的数值模拟研究了不同损伤状况和不同屈曲模式下结构稳定特征的变异。
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| 关 键 词： | 加筋板结构 稳定性 损伤 屈曲模态 模态变异 |
| 文章编号： | 1673-3185（2007）01-24-06 |
| 收稿时间： | 2006-12-27 |
| 修稿时间： | 2006-12-27 |
Dynamic Stability Characteristics of Damaged Stiffened-Plates |
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| Zhang Qiang, Hong Ming. Dynamic Stability Characteristics of Damaged Stiffened-Plates[J]. Chinese Journal of Ship Research, 2007, 2(1): 24-29. DOI: 10.3969/j.issn.1673-3185.2007.01.005 |
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| Authors: | Zhang Qiang Hong Ming |
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| Affiliation: | Department of Naval Architecture andOcean Engineering, Dalian University of Technology, Dalian 110Y24, China |
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| Abstract: | The presence of damage in a structure could considerably affect its behaviors. This paper studied the dynamic stability behavior of a damaged stiffened-plate subjected to an in-plane compressive periodic edge load by the finite element method. The influence of parameters such as extent, size and position of damage was discussed. Considering the coupling effect of vibration and buck- ling, numerical analysis of typical examples was carried out. It shows that the presence of damage had a marked effect on the dynamic instability regions. |
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| Keywords: | stiffened-plate structure dynamic stability damage buckling model modal variation |
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