In the field of materials capable to absorb the energy from impacts as cellular materials, wood is a good option because of his capacity to deform until values between 60% and 80% depending on the spice of wood. The present work deals with the elaboration of a material law within Ls-dyna software which will be able to reproduce the behaviour of wood under quasi-static compressive loads until large deformation, as observed physically in real experimental tests. A second task of the present investigation is to carry out a literature survey to study different constitutive material laws proposed by other researchers over the world. The results obtained with different models available in Ls-dyna (MAT024, MAT026, MAT063, MAT126 and MAT105) based on elastic and/or elasto-plastic behaviour, both isotropic and orthotropic, show that is possible to simulate adequately the wood behaviour under quasi-static compressive loads until large deformations.

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