具有局部结构损伤的非充气轮胎稳态动态特性的数值研究

IF 4.4 2区 工程技术 Q1 MECHANICS European Journal of Mechanics A-Solids Pub Date : 2024-09-03 DOI:10.1016/j.euromechsol.2024.105428
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引用次数: 0

摘要

非充气轮胎(NPT)从根本上避免了传统充气轮胎爆胎的风险,但在使用过程中,由于高温、负荷变化、工况变化和冲击等因素,其整体和关键部件的性能不可避免地会下降。一旦导致失效,将严重影响车辆安全。为此,本文研究了局部结构损伤对非充气轮胎动态响应的影响,为实现智能非充气轮胎(INPT)的健康监测奠定了基础。首先,建立了非充气轮胎的三维非线性有限元模型,并通过断裂力学和最大应变能密度确定了非充气轮胎的失效位置;其次,分析了结构损伤对非充气轮胎静态和动态性能的影响;最后,研究了轮胎内衬的加速度信号和传感器位置对局部结构损伤的敏感性。研究结果表明,结构损伤会导致辐条和剪切层的应力增加,随着断裂辐条数量的增加,剪切层将承受更大的载荷。与圆周加速度和横向加速度相比,径向加速度对 NPT 损坏的敏感性最高。离损坏位置最近的传感器对损坏最敏感。研究结果为 INPT 的结构优化设计和健康监测提供了参考。
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Numerical study of steady-state dynamic characteristic of non-pneumatic tire with local structural damage

Non-pneumatic tires (NPTs) fundamentally avoid the risk of tire blowout of traditional pneumatic tires, but the overall and key component performance inevitably degrades due to factors such as high temperature, variable load, variable working conditions and impact in its service process. Once this leads to failure, it will significantly impact on vehicle safety. To this end, this paper studied the influence of local structural damage on the dynamic response of NPTs, which lays the foundation for realizing health monitoring of intelligent non-pneumatic tires (INPTs). Firstly, a three-dimensional nonlinear finite element model of NPTs was established, and the failure locations of NPTs were determined by fracture mechanics and maximum strain energy density; Secondly, the influence of structural damage on the static and dynamic performance of NPTs was analyzed; Finally, the sensitivity of the acceleration signal and sensor position of the tire inner liner to the local structural damage was studied. The research results show that structural damage will cause the stress of the spokes and shear layer to increase, and as the number of broken spokes increases, the shear layer will bear a larger load. Compared with the circumferential and lateral acceleration, the radial acceleration has the highest sensitivity to the damage of NPTs. The sensor closest to the damage location is the most sensitive to the damage. The research results provide a reference for the structural optimization design and health monitoring of INPTs.

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来源期刊
CiteScore
7.00
自引率
7.30%
发文量
275
审稿时长
48 days
期刊介绍: The European Journal of Mechanics endash; A/Solids continues to publish articles in English in all areas of Solid Mechanics from the physical and mathematical basis to materials engineering, technological applications and methods of modern computational mechanics, both pure and applied research.
期刊最新文献
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