热对流条件下考虑球形夹杂分布的材料热弹接触摩擦热影响分析
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摘要
机械传动关键活动零部件接触副往往受到力载荷和摩擦热载荷的耦合作用,使得接触界面间的接触力学行为的分析变得极其复杂.利用基于等效夹杂方法建立的考虑热对流非均质材料热弹接触力学分析模型研究不同摩擦系数、夹杂位置和材料属性等参数对材料表面及内部温升及热应力分布影响规律.此外,进一步分析了接触副材料中含分布球形夹杂时摩擦热造成的影响.结果表明:接触副表面温升梯度受热对流系数的影响较大;下表面温升和热应力随摩擦系数增大而增大;分布夹杂则将接触副材料下表面温升及热应力分布变得更为复杂.
Contact pairs of mechanical transmission parts are usually subjected to coupled effects of both mechanical and frictional heating loads, which makes it extremely complicated to analyse mechanical behaviours of contact interface. A thermoelastic contact model considering heat convection of heterogeneous materials was established via equivalent inclusion method(EIM) and utilized to investigate influences of frictional coefficients, inclusion locations and material properties on temperature and thermal stress distributions on the surface or subsurface of material. In addition, thermal effects of friction on contact pairs material with embedded disperse spherical inclusions were analysed. The results show that surface temperature rise of contact pairs was influnced by coefficient of heat convection. Subsurface temperature rise and thermal stress of contact pairs increased as an augment of the friction coefficient. Temperature and thermal stress distributions in contact pairs material involving disperse inclusions were complicated in compared with a single inclusion case.
Contact pairs of mechanical transmission parts are usually subjected to coupled effects of both mechanical and frictional heating loads, which makes it extremely complicated to analyse mechanical behaviours of contact interface. A thermoelastic contact model considering heat convection of heterogeneous materials was established via equivalent inclusion method(EIM) and utilized to investigate influences of frictional coefficients, inclusion locations and material properties on temperature and thermal stress distributions on the surface or subsurface of material. In addition, thermal effects of friction on contact pairs material with embedded disperse spherical inclusions were analysed. The results show that surface temperature rise of contact pairs was influnced by coefficient of heat convection. Subsurface temperature rise and thermal stress of contact pairs increased as an augment of the friction coefficient. Temperature and thermal stress distributions in contact pairs material involving disperse inclusions were complicated in compared with a single inclusion case.
引文
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[3]Zhao Pengfei,Wang Yuhong,Zhang Xinyun,et al.Mechanical properties of the ZL205A alloy of porosity defect[J].Equipment Environmental Engineering,2017,14(8):88-94(in Chinese)[赵朋飞,王育红,张新运,等.含疏松缺陷的ZL205A合金力学性能研究[J].装备环境工程,2017,14(8):88-94].
[4]Holmberg K,Ronkainen H,Laukkanen A,et al.Tribological analysis of TiN and DLC coated contacts by 3D FEM modelling and stress simulation[J].Wear,2008,264(9-10):877-884.doi:10.1016/j.wear.2006.12.084.
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[6]Zhao Bo,Dai Xudong,Zhang Zhinan,et al.Single asperity contact and its use for fractal surface contact[J].Tribology,2014,34(2):217-224(in Chinese)[赵波,戴旭东,张执南,等.单峰接触研究及其在分形表面接触中的应用[J].摩擦学学报,2014,34(2):217-224].doi:10.16078/j.tribology.2014.02.001.
[7]Yue T,Wahab M A.Finite element analysis of fretting wear under variable coefficient of friction and different contact regimes[J].Tribology International,2017,107:274-282.doi:10.1016/j.triboint.2016.11.044.
[8]Gao Binchao,Meng Xiangkai,Li Jiyun,et al.Thermal-mechanical coupled finite element model and seal performance analysis of mechanical seals[J].Tribology,2015,35(5):550-556(in Chinese)[高斌超,孟祥铠,李纪云,等.机械密封热力耦合有限元模型与密封性能分析[J].摩擦学学报,2015,35(5):550-556].doi:10.16078/j.tribology.2015.05.006.
[9]Zhou Q,Jin X,Wang Z,et al.An efficient approximate numerical method for modeling contact of materials with distributed inhomogeneities[J].International Journal of Solids and Structures,2014,51(19-20):3410-3421.doi:10.1016/j.ijsolstr.2014.06.005.
[10]Jacq C,Nelias D,Lormand G,et al.Development of a threedimensional semi-analytical elastic-plastic contact code[J].Journal of Tribology,2002,124(4):653-667.doi:10.1115/1.1467920.
[11]Liu S,Wang Q,Liu G.A versatile method of discrete convolution and FFT(DC-FFT)for contact analyses[J].Wear,2000,243(1-2):101-111.
[12]Zhou K,Chen W W,Keer L M,et al.Multiple 3D inhomogeneous inclusions in a half space under contact loading[J].Mechanics of Materials,2011,43(8):444-457.doi:10.1016/j.mechmat.2011.02.001.
[13]Zhou Q,Jin X,Wang Z,et al.Numerical EIM with 3D FFT for the contact with a smooth or rough surface involving complicated and distributed inhomogeneities[J].Tribology International,2016,93:91-103.doi:10.1016/j.triboint.2015.09.001.
[14]Yang W,Huang Y,Zhou Q,et al.Parametric study on stressed volume and its application to the quantification of rolling contact fatigue performance of heterogeneous material[J].Tribology International,2017,107:221-232.doi:10.1016/j.triboint.2016.11.034.
[15]Zhou Q,Wang J,Wan Q,et al.Numerical analysis of the influence of distributed inhomogeneities on tangential fretting[J].Proceedings of the Institution of Mechanical Engineers,Part J:Journal of Engineering Tribology,2017,231(10):1350-1370.doi:10.1177/1350650117693420.
[16]Yu C,Wang Z,Wang Q J.Analytical frequency response functions for contact of multilayered materials[J].Mechanics of Materials,2014,76:102-120.doi:10.1016/j.mechmat.2014.06.006.
[17]Zhang H,Wang W,Zhang S,et al.Semi-analytical solution of threedimensional steady state thermoelastic contact problem of multilayered material under friction heating[J].International Journal of Thermal Sciences,2018,127:384-399.doi:10.1016/j.ijthermalsci.2018.02.006.
[18]Liu Y,Wang W,Zhang H,et al.Solution of temperature distribution under frictional heating with consideration of material inhomogeneity[J].Tribology International,2018,126:80-96.doi:10.1016/j.triboint.2018.04.027.
[19]Yang W,Zhou Q,Huang Y,et al.A thermoelastic contact model between a sliding ball and a stationary half space distributed with spherical inhomogeneities[J].Tribology International,2019,131:33-44.doi:10.1016/j.triboint.2018.10.023.
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[21]Carslaw H S,Jaeger J C.Conduction of heat in solids(Second edition)[M].London:Oxford University Press,1959.