Crash Worthiness

Publications

Topology Optimization in Crashworthiness Design

This study presents a topology optimization method for crashworthiness design, focusing on material redistribution using internal energy density (IED) in explicit finite element analysis. The approach accommodates nonlinearities like contact-impact and plasticity, refining material distribution to enhance structural efficiency under crash loads.

A design optimization approach of vehicle hood for pedestrian protection

Costin D. Untaroiu, Jaeho Shin, Jeff R. Crandall

This study focuses on developing and validating a finite element model of a headform impactor for use in pedestrian head injury risk assessment. It then uses this model in an optimization problem to minimize underhood clearance while meeting safety requirements by adjusting parametric variables like connecting spool geometry and panel thicknesses.

Finite Element Analysis of Bird Strikes on Composite and Glass Panels

Koh Chee Chuan

This paper uses finite element analysis to evaluate the effects of bird strikes on aircraft composite and glass panels. By comparing Lagrangian, ALE, and SPH formulations, it demonstrates how numerical methods can predict stresses and displacements in complex impact events and guide safer design.

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.

Offset Impact Behaviour of Bumper Beam-Longitudinal Systems: Numerical Simulations

This paper presents numerical simulations of bumper beam-longitudinal systems under offset impact loading, demonstrating how Finite Element Analysis (FEA) is used to accurately model and predict crash behavior. The research, which utilized the non-linear finite element code LS-DYNA, validates the effectiveness of FEM in simulating crash events and evaluating energy absorption.