Sökning: "Non-linear elasticity"
Visar resultat 1 - 5 av 7 uppsatser innehållade orden Non-linear elasticity.
1. Experimental and numerical analysis of orthotropic deformations of wood using Finite Strain Theory (large deformations) and the Finite Element Method (FEM) in 2D
Master-uppsats, Linnéuniversitetet/Institutionen för byggteknik (BY)Sammanfattning : This thesis involves the derivation of a constitutive model under large deformationtheory using Updated Lagrange method applied on an orthotropic material.Thefollowing aspects are included in this thesis work: introduction, theory, FEM implementation, derivation of constitutive model, calibration, result, discussion, conclusion and the future work. LÄS MER
2. Stability of building structures using NLFEA including second order effects : Applications with the software ATENA-GiD
Master-uppsats, KTH/BetongbyggnadSammanfattning : In Sweden, prefabrication in the construction industry is a very common system. In prefabricated structures, there are various kinds of connections and generally many hinged connections. Therefore, it is of high interest to study the behavior of the prefabricated buildings in relation to the connections. LÄS MER
3. Material Characterization for the Simulation of Drop Tests Against PMMA Sheets
Master-uppsats, Jönköping University/JTH, Material och tillverkningSammanfattning : There is a high demand for implementing simulations in the design and product devel-opment processes, avoiding the execution of costly tests on prototypes and giving thechance of discarding unsuitable designs, as well as exploring possible ones without much cost added.This project assignment is to find a suitable way to simulate drop tests on two typesof PMMA sheets, a material widely used on luminaire covers. LÄS MER
4. Negative energy elasticity and a model for the behavior of the residual strain in doubly cross-linked gels fabricated by shear strain
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/PolymerkemiSammanfattning : Doubly cross-linked gels were fabricated based on tetra-poly(ethylene glycol) (Tetra-PEG) by shear strain. These are gels with two network structures present in the same polymeric network. The second network structure is introduced by applying a mechanical field to the first natural network structure. LÄS MER
5. The Hanging Rope: A Convex Optimization Problem in the Calculus of Variations
Master-uppsats, Lunds universitet/Matematik LTHSammanfattning : We study the problem first introduced by Verma and Keller in 1984 of how to taper a heavy rope such that its elongation is minimized. The problem is stated as an optimization problem of a functional J[w]. Specifically we provide a proof of optimality for the solution using traditional convex optimization techniques. LÄS MER