Transverse stiffness characteristics analysis of air springs based on the precise transfer matrix method

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (4) : 61-68.

CHENG Yuqiang1,2，CAI Cunguang1,2，GAO Hua1,2，SHUAI Changgeng1,2

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Abstract

The bellows mechanical model of the air spring under preload conditions is constructed and solved, and a parametric calculation method of the transverse stiffness characteristics of the air spring is proposed. The bellows mechanical model is constructed under the condition of preload, and the transfer matrix between the bellows state vectors is derived by introducing the intermediate displacement vectors and using the precision integration method. The coupling relationship between the state vectors of the bellows, the internal pressure and the structural parameters is analyzed by the iterative method. Based on the boundary conditions, the parametric solution of the capsule stiffness is completed, and the calculation and analysis of the transverse stiffness characteristics of the air spring are completed by combining with the perfect pneumatic stiffness model. The correctness of the calculation method of transverse stiffness characteristics is verified by comparing the test results, and the influence law of the main design parameters on the stiffness characteristics is investigated.

Key words

air spring / cord-reinforced composite / transverse stiffness characteristics / thin shell theory / precise transfer matrix method

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CHENG Yuqiang1,2，CAI Cunguang1,2，GAO Hua1,2，SHUAI Changgeng1,2. Transverse stiffness characteristics analysis of air springs based on the precise transfer matrix method[J]. Journal of Vibration and Shock, 2024, 43(4): 61-68

References

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