Hydrodynamics

Publications

Protecting Buildings from Bomb Damage

Commission on Engineering and Technical Systems

This study examines how explosion-induced hydrodynamic forces impact civilian buildings and explores adapting military blast-mitigation technologies for civilian use. It highlights structural behavior, pressure dynamics, and simulation-based design, recommending shape-focused strategies, training, and tools to enhance blast resistance.

Rational Analysis of Tunnels Subjected to Different Explosive Loads

Dr. Adel Mahmoud Belal

This work presents a hydrodynamics-informed finite element analysis of tunnel structures under explosive loading. Through parametric modeling and advanced material characterization, it establishes simplified predictive equations to assess the deformation and stress distribution in rock tunnels. The simulations enhance understanding of shock propagation and structural failure mechanisms critical to tunnel safety.

Response of Reinforced Concrete Structures to Aircraft Crash Impact

T. Wilt, A. Chowdhury

This paper explores the dynamic interaction between an aircraft and reinforced concrete structures under crash conditions using SPH and LS-DYNA. By simulating hydrodynamic deformation patterns and calibrating material response, it validates the methodology against full-scale test data. The approach supports optimized structural safety evaluations for critical infrastructure under impact threats.

Finite Element Simulation of a Blast Containment Cylinder Using LS-DYNA

Trevor Wilcox

This work simulates the hydrodynamic impact of an internal TNT blast within a containment cylinder using ALE-based LS-DYNA modeling. The study investigates how mesh geometry and explosive-air interactions influence pressure wave formation and structural loading. Results provide insights into shape-driven blast response and strategies for optimizing internal cylinder design.

Tripping Instability of Ring Stiffened Cylinders induced by Underwater Explosions

Y.O. Shin, Y.S. Shin

This paper explores how underwater explosion-induced hydrodynamic forces affect the stability of ring-stiffened cylindrical shells. By simulating the interaction of blast waves and fluid flow using ALE-based LS-DYNA models, the study uncovers the role of geometric parameters in triggering tripping instability. The results support shape and structural optimization to mitigate failure under dynamic fluid loads.