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国家橡胶轮胎质量监督检验中心新引进的轮胎滚动阻力试验机于2008年4月顺利完成验收工作,正式对外承接轮胎滚动阻力测试。该机是国内开发的第1台轿车和轻型载重轮胎专用滚动阻力试验机,也是国内第三方轮胎试验室中第1台轿车和轻型载重轮胎专用滚动阻力试验机。该机采用稳态测力 相似文献
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山东玲珑轮胎股份有限公司技术中心利用有限元分析技术成功开发了轮胎滚动阻力模拟仿真技术。运用此技术,可提前预测轮胎滚动阻力;对不同设计方案的轮胎滚动阻力大小排序,快速对比改进前后的轮胎滚动阻力;确定轮胎各部件对滚动阻力贡献的比率。轮胎滚动阻力模拟仿真技术基于滚动阻力产生机理,采用热力学耦合方法,建立了一套完整的轮胎变形-能耗-传热分析系统,形成了可靠的轮胎滚动阻力分析与计算方法。该技术借助大型仿真软件ABAQUS、利用MATLAB程序进行二次开发,编制了具有简单操作界面的滚动阻力仿真软件(第1版),为缩短轮胎产品开发周期、节约生产成本提供了有力的技术支持。 相似文献
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低滚动阻力载重子午线轮胎的开发 总被引:2,自引:2,他引:0
介绍轮胎滚动阻力的测试方法以及低滚动阻力载重子午线轮胎的开发。利用有限元方法模拟轮胎滚动时的受力情况,研究轮胎各部件对滚动阻力的影响程度,通过改进各部位胶料配方、调整结构和工艺,开发出低滚动阻力载重子午线轮胎,并通过美国环境保护署的SmartWay认证。 相似文献
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由于单一传感器采集滚动轴承的故障信息精度较低,提出基于GA-BP神经网络的多传感器信息融合方法。首先使用单一传感器采集其状态信息,并采用小波包分析提取轴承故障状态特征,然后采用遗传算法(GA)优化BP神经网络对单传感器进行滚动轴承故障诊断,接着运用DS证据理论把每一个诊断结果进行信息融合,最终得到诊断结果。仿真实验结果表明:该方法可提高滚动轴承故障诊断的精确度和效率。 相似文献
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Mehdi Razzaghi Kashani 《应用聚合物科学杂志》2009,113(2):1355-1363
Mechanical and dynamic‐mechanical properties of a typical tire tread compound reinforced with one part aramid short fibers were investigated in order to predict the effects of fibers on tire tread performances such as rolling resistance and traction. Rubber processing, including mixing and extrusion, was performed in an industrial scale. Fiber orientation as a result of extrusion was evaluated quantitatively and qualitatively using mechanical anisotropy in swelling and scanning electron microscopy, respectively. Unidirectional tensile tests revealed higher modulus, but slightly lower strength and elongation at break for the composites stretched in the longitudinal (orientation) and transverse directions than those for the isotropic reference compound with no fiber. Dynamic mechanical thermal analysis showed that relative values of loss factor for the longitudinal and transverse composites and the reference compound depended on the state of polymer as glassy or rubbery. Therefore, a high loss factor at lower temperatures and a low loss factor at higher temperatures predicted a balanced improvement of tire traction and rolling resistance as a result of fiber addition. Heat build‐up and abrasion experiments showed that addition of fiber did not deteriorate other performances of tire tread. Also, the fibers had negligible effects on processing and vulcanization characteristics of the composite. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 相似文献
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介绍205/55R16L103环保型乘用车子午线轮胎的设计。设计要点:缩小胎面花印痕,优化胎面接地形状和接地压力分布,降低噪声花纹,采用缠绕式冠带层、聚酯胎体帘布、刚性较大的带束层,以及滚动阻力低和湿滑性能好的胎面胶配方,胶料采用低温一次法连续混炼工艺。成品轮胎的高速性能和耐久性能达到设计要求,滚动阻力和抗湿滑性能达到欧盟轮胎标签法B级水平,滚动噪声70dB。 相似文献
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Hybrid factors influencing wet grip and rolling resistance properties of solution styrene‐butadiene rubber composites 下载免费PDF全文
Sung‐Seen Choi Hyuk‐Min Kwon Yeowool Kim Eunah Ko Ki‐Suk Lee 《Polymer International》2018,67(3):340-346
Influencing factors on wet grip and rolling resistance properties of solution styrene ? butadiene rubber (SBR) composites were investigated in terms of main hybrid components of the microstructure and crosslink density. Influence of the molecular weight and oil extension on the wet grip and rolling resistance properties was also examined. The styrene and 1,2‐unit contents of SBR affected the wet grip and rolling resistance properties. The influence of hybrid factors on the wet grip and rolling resistance properties was examined using 3D plots of the microstructure and crosslink density. The wet grip property was influenced by the hybrid microstructure of the styrene and 1,2‐unit as well as the crosslink density. The rolling resistance property was found to be mainly affected by not only the styrene content but also the crosslink density. It was found that SBR with appropriate styrene content (15 ? 18 mol%), relatively high 1,2‐unit content (45 ? 50 mol%) and relatively high crosslink density (over 1.5 × 10?4 mol cm?3) might be good for improvement of both the wet grip and rolling resistance properties. © 2017 Society of Chemical Industry 相似文献