In this paper, the crushing behavior of honeycomb structure subjected to axial compression is studied by using finite element method. Deformation mechanism is clarified to understand the energy absorption performance in axial compression of thin-walled tube with three-fold point corner. It is found that, in the crushing process of t-t-t model, the folds, which generate along the full length of plates, come to be crushed simultaneously. On the other hand, in the crushing process of t-t-2t model,

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... the folds concentrate in the middle part of plates, and the deformation mode becomes the progressive one. Based on the assumption that strain energies of traveling hinges for the present and conventional models are equivalent, the conventional theoretical expression for the .average load is applied to the present t-t-2t model, which ignores the occurrence of separation of glue part . Further, a theoretical prediction model for the average load of simultaneous mode is proposed . Then, the validity of the proposed model is verified comparing with the numerical results by finite element method.