复杂轮廓膜式空气弹簧非线性结构参数统一模型

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摘要结构参数是影响空气弹簧力学性能的关键因素，复杂活塞轮廓的膜式空气弹簧具有结构参数复杂、力学性能非线性强及承载力随工作高度不断变化的特点。建立基于关键设计参量的复杂轮廓膜式空气弹簧非线性结构参数统一模型是设计阶段分析、优化空气弹簧力学特性的重要途径。文中针对具有直线与圆弧复合的复杂活塞轮廓的膜式空气弹簧结构参数建模问题、橡胶气囊外径随弹簧高度动态变化的问题、和复杂活塞轮廓所带来的力学性能非线性问题等，以直线段轮廓内锥角、圆弧段轮廓半径为关键设计参量，建立了复杂活塞轮廓的膜式空气弹簧非线性结构参数统一模型，揭示了关键设计参量对结构参数、刚度的影响规律。结果表明，运用文中所建立的统一模型所预测的膜式空气弹簧结构参数与试验结果最大相对误差为10.98%，不同压强下静刚度相对误差均小于7%，承载力最大相对误差均小于9%，证明了结构参数统一模型的有效性。研究结果为活塞轮廓精细化设计及膜式空气弹簧的刚度、承载特性预测与优化提供了理论指导。

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	陈俊杰1
	张盛蓬1
	刘昊1
	袁显举2
	李国全3

关键词 ：膜式空气弹簧, 复杂轮廓, 结构参数, 统一模型, 刚度特性

Abstract：Structural parameters are the key factors affecting mechanical properties of rolling lobe air spring (RLAS), and the structural parameters of rolling lobe air spring with complex piston contour has characteristics of complex structural parameters, nonlinear mechanical properties and load-carrying capacity changing with the working height. Therefore, it is an important way to analyze and optimize the mechanical properties of air springs in the design stage by establishing a unified model of nonlinear structural parameters based on key design parameters. In this paper, in order to solve the modeling problems of structural parameters of RLAS with complex piston contour composed of straight line and arc, the dynamic change of outer diameter of rubber bellows with the height of RLAS, and the nonlinear effect of mechanical performance brought by the complex piston contour, taking the inner cone angle of straight line segment contour and the radius of the arc segment contour as two key design parameters, a unified model of nonlinear structural parameters of RLAS with complex contour is established. The influence laws of two key design parameters on structural parameters and spring stiffness are further revealed. The results show that the maximum relative error between structural parameters predicted by the unified model and testing results is 10.98%, the relative error of static stiffness under different internal pressure is less than 7%, and the maximum relative error of load capacity is less than 9%, which all proves the effectiveness of the unified model of nonlinear structural parameters. The research results provide theoretical guidance for the fine design of piston contour and the prediction and optimization of the stiffness and load capacity of RLAS.

Key words： rolling lobe air spring complex contour structural parameter unified model stiffness property

收稿日期: 2022-08-23 出版日期: 2023-12-15

引用本文:

陈俊杰1,张盛蓬1,刘昊1,袁显举2,李国全3. 复杂轮廓膜式空气弹簧非线性结构参数统一模型[J]. 振动与冲击, 2023, 42(23): 240-252.
CHEN Junjie1,ZHANG Shengpeng1,LIU Hao1,YUAN Xianju2,LI Guoquan3. Unified model of nonlinear structural parameters for rolling lobe air spring with complex contour. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(23): 240-252.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I23/240

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