Essays about: "Strain Theory"

Showing result 11 - 15 of 80 essays containing the words Strain Theory.

1. 11. 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. 12. A method for developing stress-strain relationships using Nanoindentations

   University essay from Lunds universitet/Industriell Produktion

   Author : Ludvig Lindsjö; Fanny Linander; [2021]
   Keywords : Nanoindentation; Material Science; Steel; Solid Mechanics; Technology and Engineering;

   Abstract : This thesis is a material science research collaboration between the Division ofProduction and Materials Engineering at Lund Faculty of Engineering and theComputer-Aided Engineerings group at BorgWarner, Landskrona. The objectiveof the thesis is to explore the convertion of nanoindentation load-depth curves intotensile stress-strain curves, and to provide BorgWarner Landskrona with nanoin-dentation data on materials used in their standard production. READ MORE

4. 13. Markov Chain Monte Carlo (MCMC) and Bayesian Inference for Gravitational Waves

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Christine Andersson; [2021]
   Keywords : Gravitational Waves; LISA; LISA mission; Bayesian Inference; Markov Chain Monte Carlo; MCMC; Bayes’ Theorem; stochastic sampling; Metropolis Hastings; histograms; Physics and Astronomy;

   Abstract : The Laser Interferometer Space Antenna (LISA) is a space borne gravitational wave detec- tor set to launch in 2034, with the objective of detecting and studying the Gravitational Waves (GWs) of our universe. So far, ground-based detectors such as the Laser Interferometer Gravitational-Wave Observatory (LIGO) have been successful in detecting GWs, but the limitations of ground based detectors is what makes LISA so special. READ MORE

5. 14. 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

6. 15. Exploring intra-granular strain in granular systems under mechanical load using scanning 3DXRD

   University essay from Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Hållfasthetslära

   Author : Philip Vestin; [2021]
   Keywords : Granular mechanics; 3DXRD; x-ray diffraction; Python; Physics and Astronomy; Technology and Engineering;

   Abstract : This dissertation serves to explain the theory behind three-dimensional scanning x-ray diffraction while at the same time connecting the theory to a software package used for processing data obtained from measurements using scanning x-ray diffraction. This software package is then used and built upon to analyse the data obtained from the measurement of a sample of 12 silica grains subject to an uniaxial load of 60 N. READ MORE