Experimental and numerical investigation of energy absorption of corrugated thin-walled tubes with lateral holes under axial impact
In this article, the energy absorption in thin-walled corrugated pipes with and without lateral holes has been studied experimentally and numerically. In this study, these tubes have been used to absorb axial impact energy of a weight. These tubes absorb the force caused by the impact with asymmetric plastic buckling. If the force of the impacting body is greater than the minimum average buckling force, the tube will be dented and its length will decrease. The amount of pipe depression depends on the energy input to it, the geometric characteristics and the material of the pipe. In this article, it is shown that by piercing the thin-walled tube to absorb the same impact energy, the contraction length increases, and the longer the contraction length, the lower the initial force, and in other words, the possibility of control Power and damage are provided. There is a good agreement between experimental and simulation results.
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