Energy absorption characteristics of aluminium alloy AA7XXX and AA6061 tubes subjected to static and dynamic axial load

Investigation of the Energy Absorption Characteristics of Metallic Tubes with Curvy Stiffeners under Dynamic Axial Crushing

“…However, strain rate effect of aluminum alloy is almost negligible (Simhachalam et al, 2014). Deformation plots for the different structural configuration at different instant of times while impacted by the rigid plate are shown in Figures 6-8 respectively for Groups 1-3.…”

A New Configuration of Circular Stepped Tubes Reinforced with External Stiffeners to Improve Energy Absorption Characteristics Under Axial Impact

“…The application of dynamic load on structures of some materials makes them deform rapidly, resulting in high strain rates in the structure. Thus, the plastic flow of material sensitive to the value of the strain rate is known as material strain rate sensitivity (Chen et al, 2009;Simhachalam et al, 2014). A lot of research has been done to calculate the strain rate sensitivity of the aluminum circular tube under impact loading.…”

“…A lot of research has been done to calculate the strain rate sensitivity of the aluminum circular tube under impact loading. Recently, the dynamic factor range of aluminum alloys under different strain rates is conducted by Simhachalam et al(2014), the dynamic impact factor of aluminum alloys for velocity 10 m/s comes out to be from 1.1 to 1.13 ,thus the theoretical dynamic steady inversion load (Fmd) for stiffened stepped tube varies from the range 1.1Fms to 1.13Fms . From the theoretical analysis, it is found that the thickness of the tube is an effective parameter on the steady inversion load and the inversion process then the following models are conducted with different equivalent thickness by adding external longitudinal stiffeners to the large and the small tubes of the stepped tube with various values of width.…”

Numerical simulations of crashworthiness performance of multi-cell structures considering damage evolution criteria

“…Structures made of aluminium alloys are widely implemented in the automotive industry to satisfy the above requirements. Due to the lightness of aluminium alloys relative to steel, the total weight of a vehicle can be reduced by 28% [3]. This allows to reduce fuel consumption and consequently the emission of harmful contaminant agents into the atmosphere [4].…”