Development of a smart rubber joint for train using shear thickening fluids
Development of a smart rubber joint for train using shear thickening fluids
复制标题
DOI：
10.1088/1361-665x/ab5cf9
复制
发表时间：
2020-04
影响因子：
4.1
通讯作者：
Jian Yang;Shuaishuai Sun;Ning Guo;D. Ning;M. Nakano;Zhixiong Li;Haiping Du;Shiwu Zhang;Weihua Li
中科院分区：
文献类型：
--
作者：
Jian Yang;Shuaishuai Sun;Ning Guo;D. Ning;M. Nakano;Zhixiong Li;Haiping Du;Shiwu Zhang;Weihua Li
开发列车转向架以实现高速稳定性和良好的曲线通过性能一直是一个挑战。这是因为相互冲突的刚度要求：在转向架设计中，高速稳定性要求较高的主纵向刚度，而为了在曲线上获得更好的性能，则需要相对较软的主纵向刚度。为了解决这一参数不相容的问题，本文提出了一种采用剪切增稠流体(STF)结构作为变刚度部件的设计方案。这种新型关节被开发出来，然后在MTS试验机上进行测试，以表征其频率依赖特性。在固定频率下进行了变位移幅下的MTS试验，研究了变幅对有效刚度的影响。最后，从改善列车稳定性和曲线通过性能两方面对所提出的STF节点的性能进行了数值评估。数值评估结果表明，自适应STF橡胶接头的性能优于传统橡胶接头，它可以满足相互冲突的刚度要求，同时实现高速稳定性和曲线通过性。
Developing a train bogie to achieve high speed stability as well as good curve passing performance has always been a challenge. This is because of the conflicting stiffness requirements: stability at high speed calls for a high primary longitudinal stiffness in bogie design, whereas for better performance through curves, a relatively soft primary longitudinal stiffness is required. To solve this parameter incompatibility, this paper proposes a new design which uses the shear thickening fluid (STF) structure as the stiffness changing component. This new joint was developed and then tested using MTS machine to characterize its frequency-dependent characteristics. MTS testing under varying displacement amplitude at fixed frequency was also performed to investigate the influence of the varying amplitude on the effective stiffness. At last, the performance of the proposed STF joint in terms of improving the train stability and the curving performance is numerically evaluated. The numerical evaluation results demonstrate that the adaptive STF rubber joint outperforms the conventional rubber joints in that it can satisfy the conflicting stiffness requirements to simultaneously achieve high speed stability and curve trafficability.