起重机械立柱的局部屈曲失效分析与模型试验
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摘要
局部屈曲失效是起重机械立柱结构失效的一种形式,对立柱结构的稳定性和安全性有着重要影响。针对起重机械立柱结构,基于薄板小挠度屈曲理论,对立柱薄板进行了局部屈曲失效分析,推导出均匀受压四边简支薄板的理想弹塑性屈曲载荷临界力和临界应力公式;利用ANSYS有限元分析软件,对立柱结构的薄板屈曲现象进行仿真,并且结合模型试验对失效现象进行了实物验证和对比分析。研究结论可作为起重机械立柱结构设计和安全校核的技术参考。
Local buckling is a failure form of hoisting machinery column structure,which has an important influence on the stability and safety of hoisting machinery. Based on the small deflection buckling theory of thin plate,critical force and critical stress formulas of buckling load of thin plates was deduced. The buckling of thin plates was simulated by ANSYS finite element analysis software,and the failure phenomena were verified and compared with the result of model test. The conclusion of this study can be used as a technical reference for the structural design and safety check of hoisting machinery column structure.
Local buckling is a failure form of hoisting machinery column structure,which has an important influence on the stability and safety of hoisting machinery. Based on the small deflection buckling theory of thin plate,critical force and critical stress formulas of buckling load of thin plates was deduced. The buckling of thin plates was simulated by ANSYS finite element analysis software,and the failure phenomena were verified and compared with the result of model test. The conclusion of this study can be used as a technical reference for the structural design and safety check of hoisting machinery column structure.
引文
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[2]刘磊.单主梁门式起重机动态特性[J].辽宁工程技术大学学报(自然科学版),2013(4):521-526.
[3]朱银磊,丁政伟.浅析建筑工程中起重机械的应用[J].建筑工程技术与设计,2015(29):1528.
[4] UY B. Local and Postlocal Buckling of Fabricated Steel and Composite Cross Sections[J]. Journal of Structural Engineering,2017,127(6):666-677.
[5] HUANG X L,JI A M. Analysis of Nonlinear Local Buckling of Crane Telescopic Boom[J]. Applied Mechanics&Materials,2013(387):197-201.
[6]王占涛,马亮亮.桥式起重机翼缘板屈曲分析[J].建筑机械,2017(7):101-104.
[7]刘健.实腹式伸缩臂架局部稳定性失效仿真与性能评估[D].太原:太原科技大学,2015.
[8]徐兴伟,胡晓兵,武韶敏,等. 45t轻量化门式起重机的优化及局部屈曲研究[J].起重运输机械,2016(6):67-71.
[9]魏国松.桥式起重机金属结构可靠性分析及Isight仿真研究[D].大连:大连理工大学,2016.
[10] CHENG Maolin,XU Changsheng. On the Vertical Design Coefficient of the Folding-jib Offshore Deck Crane Based on FEA[J]. Ship&Ocean Engineering,2010,39(1):140-145.
[11]刘磊,付云飞,胡南.塔式起重机臂架系统有限元参数化设计[J].辽宁工程技术大学学报(自然科学版),2013(7):962-967.
[12] PAN D W,SUN D P,LIN C X,et al. Analysis and computation for salvaging wrecked ship by hoisting machinery[J].Journal of Dalian Maritime University,2014,40(4):7-12.
[13]黄日龙.大型轨道式擦窗机的结构优化设计和稳定性分析[D].无锡:江南大学,2014.
[14]赵专东,尹忠俊,陈兵.刚柔耦合中壳及体单元节点自由度耦合的问题[J].起重运输机械,2007(5):32-33.
[15]王海波,万敏,阎昱,等.参数求解方法对屈服准则的各向异性行为描述能力的影响[J].机械工程学报,2013,49(24):45-53.