AFEM 2013 Term Project Posted Material

AFEM 2013 Term Project Posted Material

Projects, ttles and abstracts as of April 9, 2013 Alphabetized by last name of first student in group

Gunnar Ashton, Mark Robinson. Topic #9 in instructor's list
Title Develop a template for bilinear pyramid elements with 5 nodes
Abstract This project focuses on the development of an algebraic template for the pyramid element with 5 nodes. High order patch tests will be conducted to verify element formulation and determine the optimal element under bending actions.
Progress Presentation (PDF), Final Presentation (PDF), and Report (PDF)

Reza Behrou, Farhad Shahabi. Topic #1 in instructor's list
Title Develop and test an improved 4-node axisymmetric (ring) element
Abstract In this study, 4-node quadrilateral element is developed based on the hybrid element formulation for axisymmetric solid to capture the near incompressible condition. The numerical results will be compared by the Quad4 and Quad 8 as benchmarks.
Progress Presentation (PDF) Final Presentation (PDF), and Report (PDF).

Osama Bilal, Dimitri Krattiger, Romik Khajehtourian. Topic #2 in instructor's list
Title An improved higher order 1D element for elasto-dynamic contact problems
Abstract Elasto-dynamic simulations of finite element models can provide valuable insight into the behavior of structures. Conventional finite elements often create considerable noise in the simulation results. Limited reductions in noise have been achieved by modifying terms in the mass and or stiffness matrices. We propose a new finite element based on Craig-Bampton substructuring that reduces the noise in elasto-dynamic simulations. Specifically we aim to improve results for contact problems.
Progress Presentation (PDF), Final Presentation (PDF), and Report (PDF).

Lan Nguyen, Boning Zhang. Topic #5 in instructor's list
Title 8-node hexahedron solid element high-order stiffness template
Abstract This study presents the development of a template for the 8-node solid brick element and the investigation in optimal selection of higher order stiffness matrix for the rectangular geometry, using bending benchmarks. A detailed analysis will be presented to develop a 8 node, 3 degree of freedom per node, with symbolic dimension of element size. Study includes boundary conditions, shape function, and potential use of the element in ongoing research specified in masonry wall assemblage model.
Progress Presentation (PDF), Final Presentation (PDF), and Report (PDF).

Thomas Snow, Lance Markovchick, John Schoomaker Related to ongoing ASEN Graduate Project
Title Finite element analysis of an axisymmetric hybrid rocket
Abstract This project is meant to provide further analysis of an axisymmetric combustion chamber, currently being designed by the graduate project team HySoR. A finite element model will be established to solve for the displacements, and stresses to verify the structural integrity of the rocket. This modeling will be compared and discussed in detail with back of the envelope calculations performed for the entire system. If successful a possible extension would be to develop a thermo model to solve for the temperature distributions present on the combustion chamber surface, which then could possibly be verified by experimental results
Progress Presentation (PDF), Final Presentation (PDF), and Report (PDF).

Hernan Villanueva, Kai Yu. Own project, related to ongoing research
Title A complete methodology for the implementation of XFEM models
Abstract The project will offer background information for the eXtended Finite Element Method (XFEM). It will then overview the general methodology to discretize domains with multiple material phases (discontinuities) and the implementation of enrichment functions at the location of these discontinuities to solve the set of partial differential equations. The main objective of the project will be to offer a novel approach to the selection of which enrichment functions to use at the location of the discontinuities as well as a study to compare results obtained from said methodology with regular FEM models.
Progress Presentation (PDF), Final Presentation (PDF), and Report (PDF).

Last update: May 8, 2013