| 大开口对船舶板架稳定性和极限承载力的影响 |
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| 引用本文： | 张宇力,曾广武,段洪,李朝晖.大开口对船舶板架稳定性和极限承载力的影响[J].华中科技大学学报(自然科学版),2002,30(5):56-58,64. |
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| 作者姓名： | 张宇力 曾广武 段洪 李朝晖 |
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| 作者单位： | 1. 华中科技大学,交通科学与工程学院
2. 中国船舶重工业集团,701研究所 |
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| 基金项目： | 国防科技预研基金资助项目 |
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| 摘 要： | 选取典型船舶板架，采用ANSYS系统，对开口和不开口的板，分别进行了特征值屈曲分析和极限承压屈曲分析，同时，运用便于简化处理的相当梁系法，将加筋板架，近似看作由带附连翼板的交叉梁系构成，转换以后，给出了一套工程近似计算方法，经分析比较，得知：板的屈曲模式所对应的屈曲压力并不一定是最低的，高应力区出现了梁（桁）腹板平面外的失稳，大开口边缘构件的倾向刚度大大削弱，纵桁的理论论界应力降低。
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| 关 键 词： | 船舶板架 有限元 近似计算 屈曲分析 特征值 |
| 文章编号： | 1671-4512(2002)05-0056-04 |
The effect of big placket on stability and terminal loading in marine structure |
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| Zhang Yuli Zen Guangwu Duan Hong Li Zhaohui College of Traffic Sci. & Eng.,Huazhong Univ. of Sci. and Tech.,Wuhan ,China..The effect of big placket on stability and terminal loading in marine structure[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2002,30(5):56-58,64. |
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| Authors: | Zhang Yuli Zen Guangwu Duan Hong Li Zhaohui College of Traffic Sci & Eng Huazhong Univ of Sci and Tech Wuhan China |
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| Institution: | Zhang Yuli Zen Guangwu Duan Hong Li Zhaohui College of Traffic Sci. & Eng.,Huazhong Univ. of Sci. and Tech.,Wuhan 430074,China. |
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| Abstract: | For the ringent and nonringent board, eigenvalue flection and flection under terminal press are analyzed. The method of corresponding girder being easy to predigest is adopted. Board with tendon is looked upon across girder with attaching limb approximately. After being converted, a set of calculating method for engineering is got. It is known that flection mode of board is not corresponding to minimum press. Girder (joist) will become unsteady out of plane in high stress section. In the frame of reference, the critical stress of vertical joist is reduced. |
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| Keywords: | watercraft structure finite element near calculation flection analysis eigenvalue |
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