基于有限元法的吊钩结构研究
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摘要
钢索起吊重物的摆动角度是影响吊钩结构强度的重要因素。通过有限元软件ANSYS模拟计算,揭示吊钩结构的危险截面及钢索摆动角度对吊钩结构强度的影响规律。计算结果表明:吊钩结构的危险截面分别在A-A、B-B和C-C截面处;随着摆动角度的增大,水平附加分力引起的A-A和CC截面处的应力值变化极小,而B-B截面呈递增趋势,影响显著。分析结果为吊钩结构的强度设计提供理论依据。
The swinging angle of a steel cable is a key factor affecting the strength of hook structure.The brittle sections of the hook structure and the law of the swinging angle affecting the strength of the hook structure were revealed with ANSYS software. The results indicate that the sections of A-A,B-B and C-C are the brittle sections. The tensile stress of the sections of A-A and C-C changes very little,but rises markedly in the section of B-B with the increase of the swing angle. The results can serve as a theoretical basis for the strength design of crane hook structure.
The swinging angle of a steel cable is a key factor affecting the strength of hook structure.The brittle sections of the hook structure and the law of the swinging angle affecting the strength of the hook structure were revealed with ANSYS software. The results indicate that the sections of A-A,B-B and C-C are the brittle sections. The tensile stress of the sections of A-A and C-C changes very little,but rises markedly in the section of B-B with the increase of the swing angle. The results can serve as a theoretical basis for the strength design of crane hook structure.
引文
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[2]Muromaki T,Hanahara K,Nishimura T,et al.Multi-objective shape design of crane-hook taking account of practical requirement[C]//Proceedings of the 2nd International Symposium on Computational Mechanics and the 12th International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science.Hong Kong-Macau China.Nov.30-Dec.3,2009.Washington D C:AIP Publishing,2010,1233(1):632-637.
[3]Torres Y,Gallardo J M,Dominguez J.Brittle fracture of a crane hook[J].Engineering Failure Analysis,2010,17(1):38-47.
[4]Shaban M,Mohamed M I,Abuelezz A E,et al.Determination of stress distribution in crane hook by caustic[J].Stress,2013,2(5):369-370.
[5]高海峰,白广忱,费成巍.起重机吊钩等效应力非线性可靠性灵敏度分析[J].机械设计与制造,2014(6):167-170.
[6]闫兴民,张亮有.基于Solid Works起重机吊钩的有限元分析[J].机械工程与自动化,2016(1):44-45.
[7]Easterling K.Introduction to the Physical Metallurgy of Welding[M].Berlin:Elsevier,2013.
[8]卢泽晖,胡吉全.基于ANSYS的起重机吊钩有限元分析[J].装备制造技术,2011(2):44-46.
[9]李水水,李向东,范元勋,等.基于ANSYS的起重机吊钩优化设计[J].机械设计与制造,2012(4):37-38.