Dynamic crush behavior of adhesive-bonded aluminum tubular structure—Experiment and numerical simulation

• Adhesive-bonded aluminum tubular structures were dynamically compressed.
• Numerical simulation considering adhesive layer was also conducted.
• Effect of strain hardening property on deformation patterns was investigated.
• Separation behavior of bonded flange was reproduced in computation.

Two kinds of tubular structures were axially compressed under impact condition, where type-A structure consisted of hat shaped part and flat plate and type-B consisted of two similar hat parts. They were constructed with adhesive. Sheet materials were A1050 and A5052. The crush strength was greater in type-B. Separation of bonded flange was almost suppressed in A1050 type-A and -B structures, though it was highly visible for A5052 structure, especially in type-A. Predicted deformation behavior with separation behavior of the bonded flange by finite element method well agreed with the corresponding experimental result.