We have developed a composite material based on cassava starch reinforced with coconut mesocarp fibers which has given convincing mechanical, physical and chemical properties. The objective of this work is to analyze its elastic damageable behavior. For this, we made an analytical study followed by simulations with finite element method under the Cast3M calculation code. It appears that before displacements in the vicinity of 0.51 mm, the composite, although presenting cracks, does not reach a state of total rupture. In addition, local fractures are observed from 0.52 mm in displacement. The comparison of the two methods shows a very high agreement of the values obtained. This thus confirms the results on the behavior of this material in our previous work. This composite can be used in certain areas such as packaging.
The physical reality is often very complicated to be able to analytically solve mechanical problems. Currently, the only approaches making it possible to meet these needs are based on numerical methods based on the discretization of the problems. In mechanical and civil engineering, significant efforts are currently focused on the use of numerical simulations to solve these problems. This work is a comparative approach focusing on the analytical method to solve the problem of the bending of a beam and a numerical approach based on simulation by the Cast3M calculation code. The results obtained are of great agreement.