Tests for anti-impact performance of locally thickened T-shaped tubular joints under axial force

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (15) : 121-126.

CUI Anwen,QU Hui,CONG Jinglan

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Abstract

Tests for anti-impact performances of one unthickened T-shaped tubular joint and three ones locally thickened were conducted to study effects of thickened wall thickness Tc and thickened zone length Lc on anti-impact performance of locally thickened T-shaped tubular joints.Test results showed that specimens’ local thickening can raise bending stiffness of joint cross-section, reduce local dent deformation, and make plastic hinge line move up; meanwhile, it can improve joints’ energy-dissipating ability in the initial stage of impact and the energy-dissipating proportion of load-displacement curve’s platform segment to avoid joint zone absorbing much energy, raise joint’s anti-impact ability, and effectively protect it; the results can provide a reference for further exploring the dynamic anti-impact ability of locally thickened joints.

Key words

tubular T-joint / local thickening / lateral impact / impact resistance / failure mode

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CUI Anwen,QU Hui,CONG Jinglan. Tests for anti-impact performance of locally thickened T-shaped tubular joints under axial force[J]. Journal of Vibration and Shock, 2019, 38(15): 121-126

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