6×7-IWRC钢丝绳圈准静态压缩分析
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摘要
为研究钢丝绳减振装置在压缩状态下的非线性特性,采用显式有限元方法对6×7-IWRC钢丝绳圈的力学性能进行了准静态压缩分析。结果表明,压缩荷载作用下,钢丝绳圈与圆环具有类似的失效模式,钢丝绳截面中Mises应力呈层状分布,且每根钢丝具有单独的弯曲中性层。同向捻钢丝绳圈受压产生大变形时,大部分能量通过塑性变形耗散,摩擦耗能较小。在准静态计算结果的基础上,结合之前学者的研究,提出受压钢丝绳圈载荷-挠度分段计算模型,并通过与有限元计算结果对比,证明提出的分段计算模型可以有效描述钢丝绳圈压缩状态下的载荷-挠度关系。
To study the nonlinear characteristics of wire rope isolator under compression,the mechanical properties of the 6 × 7-IWRC wire rope loop was analyzed by using the explicit finite element method under quasi-static compression. The results show that the wire rope loop has similar failure mode with ring under compression load. Mises stress distributes as layers in the section of wire rope,and each wire has a separate bending neutral layer. Most of the energy is dissipated through plastic deformation,when the syntropy lay wire rope loop is subjected to large deformation,and the frictional energy consumption is smaller. On the basis of quasi-static calculation results and the research of previous scholars,the subsection calculation model of load-deflection of compressed wire rope loop was proposed. The subsection calculation model can describe the load-deflection relationship of the wire rope loop effectively under the compression condition compared with the simulation results.
To study the nonlinear characteristics of wire rope isolator under compression,the mechanical properties of the 6 × 7-IWRC wire rope loop was analyzed by using the explicit finite element method under quasi-static compression. The results show that the wire rope loop has similar failure mode with ring under compression load. Mises stress distributes as layers in the section of wire rope,and each wire has a separate bending neutral layer. Most of the energy is dissipated through plastic deformation,when the syntropy lay wire rope loop is subjected to large deformation,and the frictional energy consumption is smaller. On the basis of quasi-static calculation results and the research of previous scholars,the subsection calculation model of load-deflection of compressed wire rope loop was proposed. The subsection calculation model can describe the load-deflection relationship of the wire rope loop effectively under the compression condition compared with the simulation results.
引文
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[17] COSTELLO G A. Theory of wire rope[M]. New York:SpringerVerlag,1997.
[2] YU Y,CHEN Z,LIU H,et al. Finite element study of behavior and interface force conditions of seven-wire strand under axial and lateral loading[J]. Construction&Building Materials,2014,66(1):10-18.
[3] STANOVA E,FEDORKO G,FABIAN M,et al. Computer modelling of wire strands and ropes part I:Theory and computer implementation[J]. Advances in Engineering Software,2011,42(6):305-315.
[4] STANOVA E,FEDORKO G,FABIAN M,et al. Computer modelling of wire strands and ropes part II:Finite element-based applications[J]. Advances in Engineering Software,2011,42(6):322-331.
[5] JIANG W G. A concise finite element model for pure bending analysis of simple wire strand[J]. International Journal of Mechanical Sciences,2012,54(1):69-73.
[6]马军,葛世荣,张德坤.钢丝绳三维接触模型及丝间应力分布研究[J].中国机械工程,2012,23(7):864-868.MA Jun,GE Shirong,ZHANG Dekun. Research on three-dimensional contact model and stress distribution between wires of steel strand[J]. China Mechanical Engineering,2012,23(7):864-868.
[7]任志乾,于宗乐,陈循,等.基于弹塑性本构的单股钢丝绳受力分析[J].兵工学报,2015,36(9):1782-1789.REN Zhiqian,YU Zongyue,CHEN Xun,et al. Stress analysis of single-strand wire rope based on elastic-plastic constitutive model[J]. Acta Armamentarii,2015,36(9):1782-1789.
[8]吴娟,寇子明,刘玉辉,等.独立钢丝绳芯钢丝绳应力及变形分布[J].煤炭学报,2014,39(11):2340-2347.WU Juan,KOU Ziming,LIU Yuhui,et al. Distribution of equivalent stress and deformation for 6 strand warrington-seale rope with an independent wire rope core[J]. Journal of China Coal Society,2014,39(11):2340-2347.
[9]吴娟,寇子明,刘玉辉,等.弯曲钢丝绳股内钢丝应力应变数值模拟[J].煤炭学报,2015,40(6):1463-1468.WU Juan,KOU Ziming,LIU Yuhui,et al. Numerical simulation of stress-strain of bended wire rope[J]. Journal of China Coal Society,2015,40(6):1463-1468.
[10] ERDONMEZ C,IMRAK C E. Modeling and numerical analysis of the wire strand[J]. Journal of Naval Science and Engineering,2009,5(1):30-38.
[11] DERUNTZ J A,HODGE P G. Crushing of a tube between rigid plates[J]. Journal of Applied Mechanics,1963,30(3):391-395.
[12]严东晋,李宣霖,丁娜娜,等.钢丝绳隔震器刚度特性静力试验研究[J].振动与冲击,2007,26(5):145-147.YAN Dongjin,LI Xuanlin,DING Nana,et al. Experimental study on static rigidity of steel rope isolator[J]. Journal of Vibration and Shock,2007,26(5):145-147.
[13]王红霞,龚宪生,潘飞,等. O型钢丝绳隔振器动态迟滞模型参数识别方法研究[J].振动与冲击,2015,(20):155-160.WANG Hongxia,GONG Xiansheng,PAN Fei,et al. Parametric identification method for identifying dynamic hysteretic model parameters of O-type wire-cable vibration isolator[J]. Journal of Vibration and Shock,2015,(20):155-160.
[14]吴善跃,朱石坚,张振中.钢丝绳减振器垂向不对称迟滞特性分析[J].振动与冲击,2007,26(8):41-43.WU Shanyue,ZHU Shijian,ZHANG Zhenzhong. Analysis of vertical asy mmetrical hysteretic characteristic for a wire-rope vibration isolator[J]. Journal of Vibration and Shock,2007,26(8):41-43.
[15]陈斌,张磊,汪玉,等.钢丝绳隔振器等效刚度的一种分析计算方法[J].噪声与振动控制,2009,29(4):20-22.CHEN Bin,ZHANG Lei,WANG Yu,et al. A method of calculating equivalent stiffness of wire-ropei Isolators[J]. Noise and Vibration Control,2009,29(4):20-22.
[16]余同希,邱信明.冲击动力学[M].北京:清华大学出版社,2011.YU Tongxi,QIU Xinming. Impact dynamics[M]. Beijing:Tsinghua University Press,2011.
[17] COSTELLO G A. Theory of wire rope[M]. New York:SpringerVerlag,1997.