Finite Element Analysis

Publications

GasTurbnLab

GasTurbnLab: a multidisciplinary problem solving environment for gas turbine engine design on a network of nonhomogeneous machines

Overcoming element erosion limitations within Lagrangian finite element codes

This paper focuses on overcoming the limitations of Lagrangian finite element codes. It proposes a new method to deal with element erosion, which is a key issue when modeling large deformations from events like high-velocity impacts. The research demonstrates the effectiveness of this FEA method by comparing simulation results with experimental data.

Optimization of Shell Buckling Incorporating Karhunen-Loeve-Based Geometrical Imperfections

Ken Craig, Nielen Stander

This paper presents a design optimization study for shell buckling, incorporating geometric imperfections defined through Karhunen-Loève expansions. The methodology utilizes Monte Carlo simulation with LS-OPT to minimize the average peak normal force and internal energy, demonstrating the power of a parametric approach in creating robust designs.

Uncertainty in finite Element Modeling and Failure Analysis: A Metrology-Based Approach

This paper proposes a metrology-based approach to address uncertainty in finite element modeling and failure analysis, treating parametric variations like mesh size as "numerical experiments" to quantify uncertainty. This methodology is critical for creating a more robust framework for design and failure prediction, moving beyond traditional deterministic models.

Computer Simulation of Impact and Collapse of New York World Trade Center North Tower on 9/11

A 3D computer simulation of the World Trade Center North Tower's destruction, modeling the initial impact, fire-induced strength reduction, and progressive collapse. The simulation uses the AUTODYN-3D program and advanced numerical techniques to analyze the entire catastrophic event.