Investigating the effect of shape and defects of honeycomb structure on its energy absorption capability by finite element method

Subject Areas : Creep, Fatigue and Fracture Mechanic

Ramin Meshkabadi ¹ , benyamin tahmaspour ²

1 - Department of Mechanical Engineering, Ahar Branch, Islamic Azad University, Ahar, Iran
2 - Department of Mechanical Engineering, Ahar Branch, Islamic Azad University, Ahar, Iran

Received: 2018-10-12 Accepted : 2018-12-09 Published : 2019-02-20

Keywords: Defect, Honeycomb Structure, Energy Absorption capability, Finite Element method ABAQUS software,

Abstract :

In the present study, the effects of defects in the honeycomb structure on the capability of the energy absorption are investigated using the finite element method in ABAQUS software. By simulation using quasi-static analysis, the effects of the geometric dimensions of the defect and different geometries of honeycomb cells on the energy absorption of the structure have been investigated. In the analysis, for each case three percent of defects, including 0, 10 and 30% were studied. The results show that the honeycomb structure with A-type cell geometry is completely destroyed, which can be due to the asymmetry of the structural cells. In the other two models, the structure retains its overall shape and by systematic modification of the cells, they have the ability to absorb energy during the collision. Also, the results show that the defects in these structures have a significant effect on their energy absorption capacity in which by increasing the defects, the energy absorption capacity decreases.