Abstract
The axial crushing resistance of a new type of embedded multi-cell (EMC) tubes is investigated in this paper. Quasi-static tests are carried out first to investigate the deformation and force response of both empty square tubes and EMC tubes. The components of the crush force of EMC tubes are analyzed quantitatively. Nonlinear explicit finite element method is then employed to simulate the crushing process and the numerical results compare well with experiment. By using the FE model validated by experiment, parametric study is then performed to investigate the energy absorption performance of embedded tubes with various configurations. Finally, theoretical analysis is conducted to analyze the components of crush resistance of the whole structure and an expression is derived to predict the mean crushing force of EMC tubes. Theoretical predictions are in good agreement with experimental and numerical results.
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