Theoretical analysis of a thin-walled sinusoid corrugated tube under axial loading

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (7) : 96-101.

HAO Wenqian, XIE Jiamiao, ZHAO Xiang, WANG Fenghui

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Abstract

The mechanical behaviors of a thin-walled sinusoid corrugated tube under axial loading were investigated. Introducing eccentricity factor, amplitude factor and considering strain- enhancing effect of material, the theoretical model for plastic buckling of a sinusoid corrugated tube was proposed based on the energy conservation principle and the plastic hinge theory. The theoretical expressions of plastic bending dissipation energy, stretch dissipation energy and crushing force of the sinusoid corrugated tube were obtained during the crushing process. The results showed that the theoretical analysis results agree well with those of tests and numerical simulation; the mean crushing force is related to effective compression distance factor and amplitude factor; the normalized crushing force decreases with increase in wavelength and amplitude of the sinusoid corrugated tube, and increases with increase in amplitude factor.

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sinusoid corrugated tube / axial loading / crushing force / amplitude factor

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HAO Wenqian, XIE Jiamiao, ZHAO Xiang, WANG Fenghui. Theoretical analysis of a thin-walled sinusoid corrugated tube under axial loading[J]. Journal of Vibration and Shock, 2018, 37(7): 96-101

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