囊式空气弹簧统一结构参数预测模型及其影响规律研究

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (24) : 249-254.

论文

陈俊杰1,2，殷智宏2,3，郭孔辉3，张磊4

作者信息 +

A study on unified prediction models and influence laws of structural parameters for convoluted air spring

CHEN Junjie1,2, YIN Zhihong2,3,GUO Konghui3, ZHANG Lei4

Author information +

文章历史 +

摘要

囊式空气弹簧的结构参数是影响其力学特性的重要因素，解决结构参数的辨识难题是计算囊式空气弹簧承载、刚度特性的关键途径。文中采用几何与力学分析方法，以单曲曲囊弧长和盖板有效法兰半径为关键设计参量，建立了基于关键设计参量的囊式空气弹簧统一结构参数预测模型。搭建了结构参数测试装置，实验验证了统一结构参数模型的正确性。揭示了CAS有效容积及其变化率、有效面积与关键设计参量均正相关，但有效面积变化率与曲囊弧长正相关、与有效法兰半径呈负线性相关特性，为设计刚度更低的CAS提供指导；进一步指出有效法兰半径对CAS结构参数的影响比曲囊弧长更为显著，增大有效法兰半径能够明显增大有效面积而显著提升CAS的承载特性，为保证工作气压不变前提下提升CAS承载能力提供了设计指引。研究结果为设计阶段准确计算囊式空气弹簧的结构参数、力学特性奠定基础，也为其结构参数设计与优化提供理论支撑。

Abstract

Structural parameters of convoluted air spring (CAS) are key factors on affecting its mechanical properties. Solving the problem of structural parameters identification is the key way to calculate the load capacity and stiffness characteristics of CAS. Taken the arc length of single convolution and effective flange radius of bead plate as the key design parameters, unified prediction models of structural parameters of CAS based on the key design parameters are established by combining geometrical analysis approach with mechanical analysis method. The test device of structural parameters is built, and the validity of unified prediction models of structural parameters are verified by experiments. It is revealed that the effective volume and its change rate, effective area of CAS are positive correlation with key design parameters, but the change rate of effective area is positive correlation with the arc length of single convolution and negative correlation with effective flange radius, which provides a guide for lower stiffness design of CAS. It is further pointed out that the effective flange radius has more significant influence on structural parameters of CAS than arc length of single convolution. Increasing the effective flange radius can significantly increase the effective area and significantly improve load capacity of CAS, which also provides a design guide for improving the load capacity of CAS under the premise of keeping the working pressure unchanged. The research results lay a foundation for the accurate calculation of structural parameters and mechanical properties of CAS in the design stage, and also provide theoretical support for the design and optimization of structural parameters of CAS.

导出引用

陈俊杰1,2，殷智宏2,3，郭孔辉3，张磊4. 囊式空气弹簧统一结构参数预测模型及其影响规律研究[J]. 振动与冲击, 2021, 40(24): 249-254

CHEN Junjie1,2, YIN Zhihong2,3,GUO Konghui3, ZHANG Lei4. A study on unified prediction models and influence laws of structural parameters for convoluted air spring[J]. Journal of Vibration and Shock, 2021, 40(24): 249-254

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