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Design and optimization of nine degrees of freedom suspension model for hyperloop pods
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit ( IF 1.7 ) Pub Date : 2022-07-13 , DOI: 10.1177/09544097221112580
Pratik Madhan 1 , Shantanu Gaikwad 1 , Brajesh Panigrahi 1
Affiliation  

The concept of Hyperloop systems is proposed to cater the needs of high-speed transportation of goods and passengers. This technology comprises low-pressure tubes, pods and terminals. The pods travel inside the low-pressure tubes at very high speed between the terminals. One of the crucial aspects of this technology is the design of suspension systems for pod stability. It has been accentuated that a wheel-based suspension system is a superior option for subsonic speed travel with the minimum achievable technology and leaving higher performance for future developments. Therefore, a nine DOF wheel-based suspension model is proposed for Hyperloop pods in the present work. The design of the proposed suspension model is developed considering the high acceleration and normal and emergency braking events in Hyperloop systems. The objective of the proposed design is to minimize pod displacements due to various possible excitations. Equation of motion for the model is firstly derived, and the responses for the various excitations are obtained using a Simulink model and Newmark β method. Subsequently, the design parameters of the proposed model are optimized using the Simulink optimization tool. The response of the pod with the proposed suspension model is compared with the responses of existing suspension models to ensure better pod stability. Finally, acceleration and braking events in the Hyperloop environment are considered with the load transfer mechanism. Subsequently, a parametric study on the response of the Hyperloop pods with a proposed suspension model with optimized parameters is performed considering normal and emergency braking events.



中文翻译:

超级高铁吊舱九自由度悬挂模型设计与优化

Hyperloop系统的概念是为了满足货物和乘客高速运输的需要而提出的。该技术包括低压管、吊舱和终端。吊舱在终端之间的低压管内以非常高的速度行进。该技术的关键方面之一是吊舱稳定性的悬挂系统设计。已经强调的是,基于车轮的悬架系统是亚音速行驶的最佳选择,可实现的技术最少,并为未来的发展留下更高的性能。因此,在目前的工作中,提出了一种用于 Hyperloop 吊舱的九自由度轮式悬挂模型。所提出的悬架模型的设计是考虑到 Hyperloop 系统中的高加速度以及正常和紧急制动事件而开发的。所提出设计的目标是尽量减少由于各种可能的激励引起的吊舱位移。首先导出模型的运动方程,并使用 Simulink 模型和 Newmark β 方法获得各种激励的响应。随后,使用 Simulink 优化工具优化所提出模型的设计参数。将使用所提出的悬挂模型的吊舱的响应与现有悬挂模型的响应进行比较,以确保更好的吊舱稳定性。最后,利用负载转移机制考虑 Hyperloop 环境中的加速和制动事件。随后,考虑到正常和紧急制动事件,对 Hyperloop 吊舱的响应进行了参数研究,并采用了具有优化参数的建议悬架模型。

更新日期:2022-07-13
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