The Effect of Mesh Size And Frictional Force on Simulation of Aluminium Honeycomb Under Quasi-Static Loading

Abstract

This paper focuses on the works to model the aluminium honeycomb with the effect of meshing size that implemented into a shell body of the honeycomb and frictional force that introduced into an interaction between the honeycomb and rigid plates. The model is performed by using ABAQUS 6.12 in the explicit environment. The honeycomb with 0.0127 m cell size is modelled and three types of mesh size which are 3 mm, 1 mm and 0.8 mm are analysed based on buckling mode and load-displacement characteristics. No friction coefficient is applied during simulation. From this simulation, 1 mm meshing size is the optimize value where the load-compression pattern graph is almost similar like the experimental result compared with others meshing size. But the buckling mode is slightly different compared with the experimental result where the bottom part of honeycomb made the contract or negative expand behaviour. In order to avoid this behaviour, the friction coefficient is introduced between the honeycomb surface and rigid plates surface. Two values of friction coefficient are tested which are 0.1 and 0.3. The findings is the frictional coefficient 0.3 and meshing size 1 mm are optimized values that can avoid the contract behaviour and the result of buckling mode is similar with the experimental result.

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“…Li et al (2013aLi et al ( , 2013b, Hong et al (2006) and Liaghat and Alavinia (2003) carried out the theoretical calculation and experimental verification and analyzed the energy absorption capacity of metal honeycomb with the hexagonal cell shape in the compression process. Pokaad and Said (2015) studied the load-displacement curve and deformation capacity of the metal honeycomb under a compression load and pointed out that the friction coefficient between the honeycomb and the rigid plate is the influence factor of the buckling mode of honeycomb. Deng et al (2012), Hu and Chen (2011), Li et al (2013aLi et al ( , 2013b and Han and Zhang (2017) studied the energy absorption properties of metal honeycomb with different topologies such as triangle, staggered triangle, square, staggered square and star and analyzed the influence of dimension parameters on the energy absorption capacity of honeycomb.…”