Numerical modelling of wood behaviour under large deformation
Tutor / director / avaluadorNaceur, Hakim
Realitzat a/ambUniversité de Valenciennes et du Hainaut-Cambrésis
Tipus de documentTreball Final de Grau
Condicions d'accésAccés restringit per decisió de l'autor
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.