Bridge rails are a type of longitudinal barrier that serves the important purpose of keeping vehicles on the bridge structure. Many different designs have evolved for bridge rails, including some based upon the cross sections used for rigid concrete safety shapes. These designs need to conform to the crashworthiness requirements of NCHRP Report 350 or MASH to be acceptable for use on U.S. highw...

This paper is used the slotting technique to manufacture self-reinforced polypropylene (SRPP) sandwich structure. The crashworthiness characteristics of structures were measured as a function relative density. In this research, particular focus placed on examining energy-absorbing with honeycomb and star cores. It was concluded that SRPP panel core length 60 mm provided best characteristics. Mo...

In vehicle crashworthiness design optimization detailed system evaluation capable of producing reliable results are basically achieved through high-order numerical computational (HNC) models such as the dynamic finite element model, mesh-free model etc. However the application of these models especially during optimization studies is basically challenged by their inherent high demand on computa...

Occupant injury in real world vehicle accidents can be significantly affected by a set of crash characteristics, of which impact direction and impact location (or damage location) in general scale interval (e.g., frontal impact is frequently defined as general damage to vehicle frontal end with impact angle range of 11-1 o'clock) have been identified to associate with injury outcome. The effect...

This paper investigates the relationship between a passenger car's year of registration and its crashworthiness and aggressivity in real-world crashes. Crashworthiness is defined as the ability of a car to protect its own occupants, and has been evaluated in single and two-car crashes. Aggressivity is defined as the ability to protect users travelling in other vehicles, and has been evaluated o...

This paper focusses on recent developments and on-going research related to parallel and distributed approaches for crashworthiness simulation, using the PAM-CRASH code from ESI as an example. The developments described here relate directly to the take-up in the automotive industry of the latest High Performance Computing (HPC) technology, since crash and safety analysis is well established in ...

To protect passengers, large aircraft are equipped with multiple mechanisms to absorb impact energy during a crash. However, light aircraft rely only on the cabin structure to withstand the compression and energy generated during a crash. This study performed a topology optimization analysis on the model structure by using Abaqus/optimization and used strain energy as the objective function and...

This paper presents a procedure to optimize a conceptual ship side structure from a crashworthiness point of view. As an example, this procedure is presented for a chemical or product tanker. A particle swarm optimization algorithm is used for the procedure. The classification society compliance of the conceptual design is checked through service loads that are applied to the ship’s hull girder...