Finite Element Analysis

Publications

Baseline Structural Preformance and Aircraft Impact Damage Analysis of the World Trade Center Towers

This report analyzes the structural performance and aircraft impact damage of the World Trade Center Towers as part of the NIST investigation into the September 11 attacks. It examines the towers’ original design under gravity and wind loads and assesses aircraft impact effects using computational modeling. The study evaluates structural response, localized failures, and fire-related weakening, providing insights into high-rise resilience and safety improvements.

Numerical modelling of dynamic response of underground openings under blasting based on field tests

This paper presents a numerical investigation of underground blasting tests using the LS-DYNA finite element code to assess the performance of ground support systems under dynamic loads. The study employs specific material models, such as the RHT model for rock and a JWL equation of state for the explosive, to simulate the dynamic response and crack patterns observed in field experiments. The finite element model was then used to analyze how different aspects of the blast design, including charg

Satellite Collision Modeling with Physics-Based Hydrocodes

Debris Generation Predictions of the Iridium-Cosmos Collision Event and Other Impact Events.

Numerical Simulation of AM50A Magnesium Alloy Under Large Deformation

This project develops and validates a material model for AM50A magnesium alloy through experimental and numerical simulations. The model is then applied using finite element analysis to predict the behavior of a steering wheel armature under impact.

Samband mellan hårdhetstal och materialparametrar för polymermaterial

Martin Claesson and Johanna Forsgren

This paper details a methodology using finite element analysis (FEA) to convert hardness numbers for polymers into usable material parameters. It describes how simulations of hardness tests were modeled in LS-DYNA and optimized with LS-OPT to establish a relationship between hardness and the material properties required for FEA.