Leather for motorcyclist garments: Multi-test based material model fitting in terms of Ogden parameters

Abstract

This paper is focused on experimental testing and modeling of genuine leather used for a motorcycle personal protective equipment. Simulations of powered two wheelers (PTW) accidents are usually performed using human body models (HBM) for the injury assessment equipped only with the helmet model. However, the kinematics of the PTW rider during a real accident is disturbed by the stiffness of his suit, which is normally not taken into account during the reconstruction or simulation of the accident scenario. The material model proposed in this paper can be used in numerical simulations of crash scenarios that include the effect of motorcyclist rider garment. The fitting procedure was conducted on 2 sets of samples: 5 uniaxial samples and 5 biaxial samples. The experimental characteristics were used to obtain the set of 25 constitutive material models in terms of Ogden parameters.

Identification of material properties of foam used in motorcyclist protective equipment based on obtained experimental data and optimization algorithm

“…Obtained material model of the foam will be supplemented by the model of leather [2] and together will be used during the numerical simulation of the protectors standard test Č SN EN 1621-1. Furthermore, these models will be used for motorcyclist crush simulations such as [4].…”