Mapping model of cord laying angle-load bearing for air spring rubber airbag

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (21) : 291-297.

CHEN Junjie, TAN Yueling, KANG Sheng, QIU Guangqi

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Abstract

The laying angle of cord is a key technological parameter in the forming process of rubber bellows of air spring, and also an important factor affecting the effective area and load characteristics of air spring. In this paper, the laminate theory and the force analysis of bellows are used, and the cord laying angle is introduced to construct the mapping model of cord laying angle-effective area, cord laying angle-load capacity. Based on MTS852.05, the expansion diameter of air spring and load capacity test device is built. The maximum relative errors of calculation and test results of effective area and load capacity under the pressure range of 4×105Pa~7×105Pa and 46°~56° cord laying angle are 4.43% and 9.18%, respectively, which verify the correctness and effectiveness of the mapping model of laying angle-effective area and cord laying angle-load capacity. The influence mechanism of laying angle of cord on load capacity is expounded. The results provide theoretical guidance for the formulation of the forming process of rubber bellows and the optimization of the load characteristics of rolling lobe air spring, and also lay a theoretical foundation for finding out the mapping relationship between the laying angle and the mechanical characteristics of the cord layer in the thin-walled parts of the multi-layer composite rotary structure.

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CHEN Junjie, TAN Yueling, KANG Sheng, QIU Guangqi. Mapping model of cord laying angle-load bearing for air spring rubber airbag[J]. Journal of Vibration and Shock, 2023, 42(21): 291-297

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