Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 72 for “"solid mechanics"”.
-
Smoothed particle hydrodynamics for nonlinear solid mechanics
Smooth Particle Hydrodynamics (SPH) is one of the simplest meshless methods currently in use. The method has seen significant development and has been the germination point for many other meshless methods. The development of new meshless methods regularly uses standard SPH as a starting point, …
-
An active engagement pedagogy for introductory solid mechanics
Introductory Solid Mechanics has historically been taught using the traditional methods of blackboard instruction. In the Mechanical Engineering Department, we have undertaken an initiative to comprehensively transform the pedagogy of 2.001 (Mechanics and Materials I), an undergraduate course in …
-
A hybrid parallel framework for computational solid mechanics
… hybrid parallel C++ framework for computational solid mechanics is developed and presented. The modular and extensible design of this framework allows it to support a wide variety of numerical schemes including discontinuous Galerkin formulations and higher order methods, multiphysics problems, …
-
Parallel multilevel procedures for elastoplasticity computations in solid mechanics
… can solve history dependent, material nonlinear solid mechanics problems using the finite element method. Specifically, an incremental Newton-Raphson procedure is used to linearize the nonlinear equilibrium equations. The multigrid method is then used to solve the linear matrix equations at each …
-
A variational multiscale computational framework for nonlinear interfacial solid mechanics
… a robust computational framework for solving solid mechanics problems containing strong or weak discontinuities arising from interfaces. The framework consists of a stabilized version of the Discontinuous Galerkin method to handle interfaces combined with a stabilized mixed method for …
-
Developments in the Extended Finite Element Method and Algebraic Multigrid for Solid Mechanics Problems Involving Discontinuities
… to computational modeling and solution of solid mechanics problems involving discontinuities are discussed. The main tool employed for discrete modeling of discontinuities is the extended finite element method and the primary solution method discussed is the algebraic multigrid. The …
-
Stress Interference in Axisymmetric Torsion of a Transversely Isotropic Body (Elasticity, Solid Mechanics, Anisotropic, Stress Concentration)
An unbounded transversely isotropic body of revolution containing two spheroidal cavities is subjected to torsion about its axis of elastic symmetry, which coincides with its axis of revolution. At large distances from the cavities the elastic field approaches the Saint-Venant solution for the …
-
NUMERICAL METHODS FOR MULTIPHASE FLOWS: FROM A SIMPLIFIED INCOMPRESSIBLE BAER-NUNZIATO MODEL TO A UNIFIED THEORY OF COMPRESSIBLE MULTIPHASE FLUID AND SOLID MECHANICS
… flows, or for flows interacting with moving solid obstacles. These new numerical algorithms are implemented in a distributed memory MPI-parallel Fortran code. In addition, the semi-implicit discretisation adopted for the pressure subsystem, rather than a fully implicit one for the complete …
-
ANALYSIS OF BRAZILIAN SPLIT CYLINDER USING THE STATE BASED PERIDYNAMIC LATTICE MODEL
… in the form of cracks and fracture. Continuum mechanics, which has dominated the field of solid mechanics over the years, does not handle such discontinuities. A material, as defined by continuum mechanics is that which is continuous and fills the space it occupies. Although this is a …
-
A vertex based discretisation scheme applied to material non-linearity within a multi-physics finite volume framework
… of small strain, quasi-static, Computational Solid Mechanics(CSM) problems involving non-linear material behavior, specifically materials described by an elasto-visco-plastic constitutive relationship and a von-Mises yield criterion. The motivation is to contribute the non-linear CSM …
-
A nonlocal dense granular flow model implemented in the material point method
… extension of the finite element method (FEM) for solid mechanics. The nonlocal model used has shown great predictive capability for dense flows when implemented in the finite element framework, but limitations of FEM prevent application of the model to truly large scale, inhomogeneous …
-
The State-based Peridynamic Lattice Model and Reinforced Concrete Structures
Continuum mechanics is the leading tool used in computational solid mechanics. Continuum mechanics, however, assumes a materials body to be continuous, represented by analytical functions. This assumption is unrealistic for reinforced concrete structures, which become discontinuous as cracks form. …
-
A computational analysis on an initial application of a Hemiwedge based sub-surface safety valve for use in ultra-deepwater oil wells and extreme high pressure, high temperature environments
… oil through the valve, while both AnsysRTM and SolidWorks RTM Simulation are used to perform stress and fatigue analyses and other solid mechanics studies. Analysis has shown this model to be effective in successfully and safely operating at high pressures (30,000 psi ) and high temperatures …
-
Finite Element Simulations of Two Dimensional Peridynamic Models
This thesis explores the science of solid mechanics via the theory of peridynamics. Peridynamics has several key advantages over the classical theory of elasticity. The most notable of which is the ease with which fractures in the the material are handled. The goal here is to study the two theories …
-
Analysis of the Buckling States of an Infinite Plate Conducting Current
… equations of motion using nonlinear continuum mechanics, and subsequent analysis of the buckling behavior of the plate under electromagnetic self-forces. In particular, we concentrate on how the body-forces that result from the applied current determine the buckled configurations. We derive …
-
A drifter-based self-powered piezoelectric sensor for ocean wave measurements
… with the help of a coupled physics analysis of Solid Mechanics and Electrostatics Modules to achieve the output voltages. An experimental prototype has been fabricated and tested to validate the results of the dynamic model and the FEA simulation. A slider-crank mechanism is used to mimic ocean …
-
Analysis by Meshless Local Petrov-Galerkin Method of Material Discontinuities, Pull-in Instability in MEMS, Vibrations of Cracked Beams, and Finite Deformations of Rubberlike Materials
… to analyze the following linear and nonlinear solid mechanics problems: free and forced vibrations of a segmented bar and a cracked beam, pull-in instability of an electrostatically actuated microbeam, and plane strain deformations of incompressible hyperelastic materials. The Moving Least …
-
A Semi-analytical Model for Nonlinear Elliptical Inclusions with Spherical Eigenstrains
… models for metals and composites. However, as solid mechanics research increasingly focuses on soft materials such as biological tissues, a linear theory is no longer sufficient. Despite numerous potential applications ranging from medical diagnosis to industrial manufacturing processes, an …
-
A consistent segment procedure for solution of 2D contact problems with large displacements
Solution of contact problems in solid mechanics using the finite element method is a challenging and non-trivial task. Stable and efficient contact algorithms are required for effective solution of general problems. In this thesis, a general algorithm is presented for the analysis of contacting …
-
Improving the Material Point Method
… method (MPM) was designed to solve problems in solid mechanics, and it has been used widely in research and industry. In MPM, the equations of motion are solved on a background grid and Lagrangian material points represent the geometry of the body, carrying history-dependent material properties. …
Page 1 of 4