The Effect of Geometrical Non-Linearity on the Crashworthiness of Thin-Walled Conical Energy-Absorbers

Abstract

Crashworthiness of conical shells is known to depend on various factors. This study sets out to determine the extent to which the cross-sectional diameter contributes to their energy-absorbing properties. The object of the study was thin-walled aluminium tubes varying in upper diameter and wall thickness. The components were subjected to dynamic axial crushing kinetic energy equal to 1700 J. The numerical analysis was performed using Abaqus 6.14 software. The specific aim of the study was to determine the extent to which variable wall thickness affects the energy absorption capacity of the components under study. From the simulations, we have managed to establish a relationship between total energy absorption capacity and wall thickness. The results from the conducted analyses and the purpose-specific neural networks could provide the base for the future methodology for forecasting and optimisation of energy-absorbing systems.

Experimental testing of selected energy absorbers in the context of their use in rear underrun protective devices

“…(3) The peak crushing force (PCF) was determined as the maximum value of the crushing force recorded during the test. It has a significant influence on the safety of the impacting car occupants [14]. For the loads acting on the car occupants during a collision to be minimised, the value of this indicator should also be as low as possible.…”

Application of the finite element method to the design of an ankle orthosis

“…Finite Element Method is a computational method, to which it is possible to solve complex, time-consuming problems of mathematical analysis and those that do not have analytical solutions. This is possible by performing discretization and then determining differential or algebraic equations [19][20][21][22][23][24][25]. The strength analysis was performed in the Abaqus program.…”

Study on the Effect of Geometrical Parameters of a Hexagonal Trigger on Energy Absorber Performance Using ANN

“…Circular and rectangular shapes prove to be the most effective; hence, research has begun to develop profiles of this type with varying sidewall thicknesses [24,25]. The use of thickness gradations allows the stiffness to vary at different stages of the crush, and the energy absorber performance increases as the analysis proceeds [26].…”