Essays about: "Large deformation theory"

Showing result 1 - 5 of 11 essays containing the words Large deformation theory.

  1. 1. Wood and moisture-induced strains in a large deformation setting in 3D

    University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

    Author : Fredrik Ström; Anwar Obeido; [2022]
    Keywords : Total Lagrangian; Finite element method; Large deformation theory; Deformation gradient decomposition; Moisture-induced strains; Hygroscopic; Orthotropic.;

    Abstract : Many studies have previously been done on moisture-induced strains in wood. An in- finitesimal/engineering strain model has been used for most of these studies, which is often an accurate approximation for small rotations. However, if large deformations oc- cur, then fictive strains are obtained resulting from the simplified engineering strain. READ MORE

  3. 2. Experimental and numerical analysis of orthotropic deformations of wood using Finite Strain Theory (large deformations) and the Finite Element Method (FEM) in 2D

    University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

    Author : Honghao Ren; [2021]
    Keywords : Orthotropic material; Largedeformation; Two-dimension; Non-linear elasticity;

    Abstract : 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. READ MORE

  4. 3. Thermal Stability of Titanium and Niobium Stabilized Stainless Steel

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Oskar Darselius Berg; [2020]
    Keywords : Technology and Engineering;

    Abstract : This master thesis examined the microstructure after heat treatments in stainless steel, two conventional stainless steel (304 and 316) and two novel high temperature stainless steel. These stainless steels are for the use in high temperature heat exchangers for extended temperature range. READ MORE

  5. 4. Evaluation of Peridynamics and Its Application in Harmonic-Structured Material Simulations

    University essay from Lunds universitet/Mekanik

    Author : Theodor de Sousa; [2020]
    Keywords : peridynamics; peridigm; harmonic-structured materials; computational mechanics; fracture modelling; Technology and Engineering;

    Abstract : Materials are constantly sought to be improved in different manners. Two of the most common characteristics to improve are strength, and ductility. Historically, materials are modified homogeneously to achieve improvement, while the past century has also seen composite materials becoming standard-issue within various industries. READ MORE

  6. 5. Energy Decomposition Analysis of Neutral and Anionic Hydrogen Bonded Dimers Using a Point-Charge Approach

    University essay from KTH/Tillämpad fysikalisk kemi

    Author : André Nyberg Borrfors; [2020]
    Keywords : computational chemistry; density functional theory; chemical interactions; energy decomposition analysis; hydrogen bond; beräkningskemi; täthetsfunktionalteori; kemiska interaktioner; energiuppdelningsanalys; vätebindning;

    Abstract : En stor samling dimolekylära vätebindningar med formen A – H … B, där AH är en alkyn, alkohol eller tiol och B = [Br–, Cl–, NH3, HCN] beräknas och utvärderas med Kohn-Sham täthetsfunktionalteori tillsammans med bassetet m062x/6-311+g(2df.2p). READ MORE