Fiber ship : constitutive models
Document typeBachelor thesis
Rights accessOpen Access
Throughout the history of humans, materials and their behaviour have been studied in order to understand their responses to external interactions. The goal of understanding their behavior is to be able to make structures or objects with a function. In the last hundred years, the relation between the applied tension and its deformation as a response has been studied for many materials, and also general methods. Therefore, this work presents the main linear theories that characterize the behavior of different structures, especially plates. In reality, the materials do not have a linear behaviour, so this paper also explains a nonlinear theory that can be implemented together with the first ones explained with the aim of giving a non-linear character to the material. In particular, damage theory and its different types of evolution are studied. In recent decades, advanced composite materials have become a revolution in structural engineering. Their good relation between stiffness and weight makes them optimal for many engineering applications. That is why it is important to characterize its behavior and the relationship between its components. This paper explains the main ways in which we can find composite materials and their main uses in the industry. It also explains a theory that relates the behavior between tension and deformation for composite materials reinforced by long fibers. Finally, different simulations are launched in order to verify that the theories are well implemented in a software called Ramseries ® and at the same time verify that the response is the expected one. With respect to composite materials, this work fits the behaviour of the simulation with the experimental result with the objective of characterizing the behaviour of the material that afterward will be used in the European project called “Fibership” destined to develop the technologies to construct a ship made totally from composite materials.
SubjectsComposite materials, Strains and stresses, Strength of materials, Deformations (Mechanics), Materials compostos, Esforç i tensió, Deformacions (Mecànica), Resistencia de materials
DegreeGRAU EN ENGINYERIA MECÀNICA (Pla 2009)