Structural impact of bamboo/aluminium laminate

In this paper, the response of a new type of nature fiber composite, reformed bamboo/aluminum laminate, is studied with ABAQUS/Explicit code. An anisotropic plastic strain-softening model based on Hill's plastic potential and strain softening is employed to simulate the anisotropic damage behavior of the reformed bamboo. A double node model and a maximum nodal force criteria are used to describe the layer-wised structure and the initiation and development of the delamination in the laminate. Finite clement analysis results show that, although the plastic-strain soften mechanism is different from the anisotropic damage behavior of the reformed bamboo from the microscopic point of view, the structural response of the laminate agrees well with the results of the drop hammer impact experiment. Further numerical investigation suggests that reducing the layer thickness and increasing the number of layers can efficiently prevent the laminate from delamination.