Extrusion Force Distribution between Metal Blocks for Metal Belt Continuously Variable Transmission
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摘要: 以金属带式无级变速器金属块挤压力为研究目标,建立金属块挤压力数学模型。数值解和解析解的对比结果显示:挤压力从主动轮入口处开始增大,至某直线段末尾处止,此时挤压力最大;从从动轮入口处开始减小,直至为零;同时金属块挤压力进入下一个循环时,在数值上体现较好的衔接。此变化趋势及拐点与解析解基本一致说明数值解正确,模型可靠;数值解与解析解的曲线差异说明,解析解因没有考虑金属带组件间的碰撞和振动等因素而导致其存在局限性。Abstract: The extrusion force between metal blocks in metal belt continuously variable transmission(MB-CVT) is the research objective; mechanics model of metal block extrusion force has been developed. Through the comparative analysis of numerical solution and analytical solution, the results indicate that the extrusion force increases from the driver pulley ingress beginning to end straight Line Segment bc terminal, and decreases from the driven pulley egress until zero. This trend and the inflection point are consistent with the analytical solution, and it shows that numerical solution correct and the established model is rational. The curve difference between numerical solution and analytical solution indicates that analytical solution has limitation because collision and vibration of metal belt assembly is not considered.
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Key words:
- calculations /
- computer software /
- extrusion /
- friction
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[1] Kong L Y, Parker R G. Steady mechanics of layered, multi-band belt drives used in continuously variable transmissions(CVT)[J]. Mechanism and Machine Theory, 2008,43(2):171-185 [2] Akehurst S, Vaughan N D, Parker N D, et al. Modelling of loss mechanisms in a pushing metal V-belt continuously variable transmission. Part 1:torque losses due to band friction[J]. Proceedings of the Institution of Mechanical Engineers, Part D:Journal of Automobile Engineering, 2004, 218(11):1269-1281 [3] Akehurst S, Vaughan N D, Parker D A, et al. Modelling of loss mechanisms in a pushing metal V-belt continuously variable transmission. Part 2:pulley deflection losses and total torque loss validation[J]. Proceedings of the Institution of Mechanical Engineers, Part D:Journal of Automobile Engineering, 2004,218(11):1283-1293 [4] Akehurst S, Vaughan N D, Parker D A, et al. Modelling of loss mechanisms in a pushing metal V-belt continuously variable transmission. Part 3:belt slip losses[J]. Proceedings of the Institution of Mechanical Engineers, Part D:Journal of Automobile Engineering, 2004,218(111):1295-1306 [5] Asayama H, Kawai J, Tonohata A, et al. Mechanism of metal pushing belt[J]. JSAE Review, 1995,16(2):137-143 [6] 姚文俊,孙旭.基于汽车无级变速器最佳传动效率的夹紧力控制策略研究[J].机械科学与技术,2013,32(7):1060-1064 Yao W J, Sun X. Study on the strategy of clamping force control based on the best efficiency of metal V belt type CVT in Vehicle[J]. Mechanical Science and Technology for Aerospace Engineering, 2013,32(7):1060-1064(in Chinese) [7] Kobayashi D, Mabuchi Y, Katoh Y. Study on the torque capacity of a metal pushing V-belt for CVTs[C]//Detroit, MI, USA:SAE, 1998 [8] Kim H, Lee J. Analysis of belt behavior and slip characteristics for a metal V-belt CVT[J]. Mechanism and Machine Theory, 1994,29(6):865-876 [9] Micklem J M, Longmore D K, Burrows C R. Modelling of the steel pushing V-belt continuously variable transmission[J]. Proceedings of the Institution of Mechanical Engineers, Part C:Journal of Mechanical Engineering Science, 1994,208(1):13-27 [10] Kuwabara S, Fujii T, Kanehara S. Study on a metal pushing V-belt type CVT:band tension and load distribution in steel rings[J]. JSAE Review, 1999,20(1):55-60 [11] 薛殿伦,杨凯,程金接,等.金属带式无级变速器夹紧力的分析与研究[J].汽车工程,2012,34(10):923-927 Xue D L, Yang K, Cheng J J, et al. Analysis and study on the clamping force of metal V-belt CVT[J]. Automotive Engineering, 2012,34(10):923-927(in Chinese) [12] 程乃士.汽车金属带式无级变速器——CVT原理与设计[M].北京:机械工业出版社,2008:6-82 Cheng N S. The metal belt continuously variable transmission-the principle and design of CVT[M]. Beijing:China Machine Press, 2008:6-82(in Chinese) [13] 张武,刘凯,周春国,等.考虑张力和挤压力的金属带动力性能研究[J].机械科学与技术,2009,28(9):1185-1189 Zhang W, Liu K, Zhou C G, et al. Kinetics of a metal belt's tension and extrusion force[J]. Mechanical Science and Technology for Aerospace Engineering, 2009,28(9):1185-1189(in Chinese) [14] 张武,周春国,刘凯.金属带式无级变速器带轮变形研究[J].中国机械工程,2010,21(15):1771-1774 Zhang W, Zhou C G, Liu K. Research on pulley deformation of metal belt CVT[J]. China Mechanical Engineering, 2010,21(15):1771-1774(in Chinese) [15] 徐宏海,李晓阳.带超长滚珠丝杠的立式玻璃磨边机砂轮架模态分析[J].振动与冲击,2013,32(18):189-194 Xu H H, Li X Y. Modal analysis of a grinding wheel carriage for a vertical glass-edge grinding machine with a long ball screw[J]. Journal of Vibration and Shock, 2013,32(18):189-194(in Chinese)
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