基于屈曲理论的典型结构强度分析
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摘要
本论文系统论述了有限单元法和板的屈曲稳定理论,并在这些理论的指导下,以UG软件和MSC/NASTRAN软件为工具,对存在一定几何缺陷的典型箱形构件进行静强度和屈曲的综合分析,分别得出了不同缺陷度的构件的极限载荷,从而得到缺陷度与极限载荷的变化曲线,给出了缺陷度的最大许用值;同时,本论文还针对不同缺陷度构件的破坏形式不同这一问题进行了详尽的论述。此外,本论文还利用上述软件对具有国际先进水平的四履带水泥混凝土摊铺机和四履带铣刨机中的构件进行了静强度分析和屈曲分析,有限元分析结果为校核其承载的安全性及合理用材提供了理论依据,同时提出了结构设计方面的合理建议,本论文的研究方法和分析结果对机械结构强度分析具有很好的参考价值。
In this dissertation, the theories of finite element and the buckling analysis of shell are discoursed systematically. Under the direction of these theories, with the help of UG software and MSC/NASTRAN software, the defective casing texture is analyzed on static strength and buckling, And then, the maximum loads of the texture with different defect value are gotten, The changeable curve of the maximum load with the defect value and the permissible defect value are gotten. That the texture with various defects can be destroyed variously is discoursed in considerable detail as well. In addition, the structures of four track concrete paver and milling machine are analyzed on static strength and buckling by use of this software. The finite element analysis results can be of great use for verifying the security of loads and the economization of material. The results also present a proposal to design the structure reasonably. The research methods of the thesis and the results that the thesis provides have good consultant valuation for structure strength analysis.
引文
[1] 徐芝纶,弹性力学简明教程北京:高等教育出版社,2001
    [2] 赵学仁,弹性力学基础,北京:北京理工大学出版社,1994
    [3] 陆明万、罗学富,弹性理论基础,北京:清华大学出版社,1994
    [4] 杨炳成、陈偕民、郝宪武,结构有限元素法,西安:西北工业大学出版社,1980
    [5] 沃国伟、王元淳,弹性力学,上海交大出版社,1998
    [6] 张鸿庆、王鸣,有限元的数学理论,北京:科学出版社,1991
    [7] 雷晓燕,有限元法,北京:中国铁道出版社,2000
    [8] 龙志飞,岑松,有限元法新论原理·程序·进展,北京:中国水利电力出版社,2001
    [9] 王勖成、邵敏,有限单元法基本原理和数值方法,北京:清华大学出版社,1995
    [10] 中国第一汽车集团公司编写组,机械工程材料手册,1997
    [11] 肖明心,板的稳定理论,四川:四川科学技术出版社,1995
    [12] 黄与宏,板结构,北京:人民交通出版社,1991
    [13] 吴连元,板壳稳定理论,武汉:华中理工大学出版社,1993
    [14] 沈祖炎、陈扬骥、陈以一,钢结构基本原理,北京:中国建筑工业出版社,2000
    [15] 陈骥,钢结构稳定理论与设计,北京:科学出版社,2001
    [16] 王淑范、敖林,化铣网格加筋短壳的屈曲分析,北京宇航系统工程设计部
    [17] 几何缺陷结构可靠性与安全性分析及评价方法研究,武汉交通科技大学博士论文,2001
    [18] 上海铁道学院等编写,车辆强度计算理论,北京:中国铁道出版社,1981
    [19] 方圆集团等编,建设机械设计制造与应用,人民交通出版社,2001
    [20] Basic MSC/NASTRAN Linear Static and Normal Modes Analysis, The Macneal-Schwendler Corporation, 1998
    [21] Introduction to MSC/PATRAN--Modeling for Design Analysis, The
    
    Macneal-Schwendler Corporation, 1998
    [22] Static and Transient Nonlinear Analysis Exercise, The Macneal-Schwendler Corporation, 1998
    [23] MSC/PATRAN, Ansys Preference Guide, The Macneal-Schwendler Corporation, 1998
    [24] MSC/PATRAN, User's Guide Volume 1, The Macneal-Schwendler Corporation, 1998
    [25] MSC/NASTRAN, Nonlinear Analysis, The Macneal-Schwendler Corporation, 1998