Effect of mechanical anisotropy on the energy absorption capacity in thin-walled tubes

In this paper, the effect of mechanical anisotropy on the energy absorption capacity of thin-walled tubes was evaluated using experimental tests and numerical simulations. The paper shows that the plastic anisotropy could influence the energy absorption capacity of thin-walled tubes while the tube dimensions remain the same. The effect of anisotropy on energy absorption behavior and collapse modes was studied. The aims are control of the buckling modes and increase of energy absorption capacity of the tubes by varying the tubes anisotropic properties. The results indicate the possibility of controlling the load-displacement curve and energy absorption improvement by changing the anisotropy coefficients. Also, a rise of the anisotropy coefficient leads to an increase of the energy absorption and to a movement of the force-displacement diagram peak to the right side.