易拉罐在轴-侧-扭-内压联合作用下的屈曲地貌

宋广凯; 孙博华

doi:10.6052/0459-1879-20-315

易拉罐在轴-侧-扭-内压联合作用下的屈曲地貌

doi: 10.6052/0459-1879-20-315

宋广凯^*,
孙博华^*,†,1), ,

^*西安建筑科技大学土木工程学院和力学技术研究院, 西安 710055
^†宁波大学力学与机械工程学院, 浙江宁波 315211

详细信息

作者简介:
1) 孙博华, 南非科学院院士, 主要研究方向: 连续介质力学、细薄智能结构力学、工程科学问题的标度律等. E-mail: sunbohua@xauat.edu.cn

通讯作者:
孙博华

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- 收稿日期: 2020-09-07
- 刊出日期: 2021-02-10

BUCKLING LANDSCAPE OF CAN UNDER THE COMBINDE ACTION OF AXIAL COMPRESSION-TORSION-LATERAL POKING-INTERNAL PRESSURE

Song Guangkai^*,
Sun Bohua^{*,†,1)
, ,}

^*College of Civil Engineering & Institute of Mechanics and Technology, Xi'an University of Architecture and Technology, Xi'an 710055, China
^†Faculty of Mechanical Engineering & Mechanics, Ningbo University, Ningbo 315211, Zhejiang, China

摘要

摘要: 柱壳结构广泛应用于各个领域, 但由于其对初始缺陷较为敏感, 容易发生灾难性的屈曲失稳. 本文利用非线性有限元分析程序ABAQUS研究了柱壳屈曲问题, 并应用到了易拉罐的屈曲分析. 首先采用数值模拟的方法验证了Virot等学者的易拉罐屈曲试验结果, 然后为了获得屈曲的一些普适结果, 进一步考察了柱壳的屈曲表现. 对柱壳结构在不同载荷组合、不同几何参数作用下进行了细致分析. 为了讨论的直观, 本文绘制了柱壳结构在受到侧压-轴压载荷作用下外力-屈曲载荷-位移三维屈曲地貌图(称为landscape). 结果表明: 在侧压-轴压-扭转载荷作用下, 试件力-位移曲线出现了"cliff"(断崖)现象; 扭转载荷的施加不利于试件整体稳定性, 并造成了试件对初始缺陷的敏感性; 对于受到轴压-扭转载荷作用的试件, 本文定义承载力为零的平面为"sea level"(海平面)来区分试件破坏模式; 通过对不同边界条件的试件进行分析, 发现试件两端固定可以有效地增加结构的承载能力, 提高稳定性. 对柱壳结构内部充气可以大幅度提升结构的承载能力和稳定性, 减小对初始缺陷的敏感度.
- 柱壳 /
- 屈曲 /
- 屈曲地貌 /
- 易拉罐 /
- 有限元分析
Abstract: The cylindrical shell structure has been widely used in the various fields. However, the cylindrical shells are liable to catastrophic buckling, because of the notorious imperfection. The aim of this work is to investigate the buckling of the cylindrical shells based on the non-linear finite element analysis program ABAQUS and applied to the buckling analysis of cans. Firstly, the numerical simulation method was used to verify the buckling test results of the can by Virot et al. In order to obtain some qualitative results of buckling,the buckling behaviour of the cylindrical shells will be investigated. In this article, we focus on the effect of different load combinations and different geometric parameters of the cylindrical shells. The straightforward, simple analysis of the buckling of the cylindrical shells under the axially compressed-lateral perturbation load is presented. We show that the three-dimensional curves of external force-buckling load-displacement called landscape. The numerical results indicate that: the phenomenon of "cliff" appears in the force-displacement curves of specimens under the action of lateral pressure-axially compressed-torsional load; It will be appreciated that the torsional is not conducive to the stability of the specimen and makes the specimen sensitive to the initial imperfections; For specimen under axially compressed-torsional load, in this paper, the plane with zero bearing capacity is defined as "sea level" to distinguish the failure modes of specimens; The results of specimens with different boundary conditions shows that the bearing capacity of the cylindrical shells can be improved with fixed boundaries. The internal pressure can greatly improve the bearing capacity and stability of the structure and reduce the imperfection-sensitivity.
- cylindrical shells /
- buckling /
- landscape /
- cans /
- finite element analysis

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参考文献(59)

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易拉罐在轴-侧-扭-内压联合作用下的屈曲地貌

doi: 10.6052/0459-1879-20-315

作者简介:
1) 孙博华, 南非科学院院士, 主要研究方向: 连续介质力学、细薄智能结构力学、工程科学问题的标度律等. E-mail: sunbohua@xauat.edu.cn

通讯作者:
孙博华

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BUCKLING LANDSCAPE OF CAN UNDER THE COMBINDE ACTION OF AXIAL COMPRESSION-TORSION-LATERAL POKING-INTERNAL PRESSURE

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易拉罐在轴-侧-扭-内压联合作用下的屈曲地貌

doi: 10.6052/0459-1879-20-315

作者简介: 1) 孙博华, 南非科学院院士, 主要研究方向: 连续介质力学、细薄智能结构力学、工程科学问题的标度律等. E-mail: sunbohua@xauat.edu.cn

通讯作者: 孙博华

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BUCKLING LANDSCAPE OF CAN UNDER THE COMBINDE ACTION OF AXIAL COMPRESSION-TORSION-LATERAL POKING-INTERNAL PRESSURE

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作者简介:
1) 孙博华, 南非科学院院士, 主要研究方向: 连续介质力学、细薄智能结构力学、工程科学问题的标度律等. E-mail: sunbohua@xauat.edu.cn

通讯作者:
孙博华