Experimental and Numerical Assessment of the Impact Test Performance Between Two UHSS Toe Cap Models

Abstract

This paper presents an integrated approach for an ultimate high-performance safety toe cap with significant milestones in slim design and weight saving. The study of crashworthiness properties was performed through impact-crash test conditions exploring the potential of applicant solutions by the combination of an advanced high-strength steel and enhanced geometric stiffening models. The structural response for a significant thickness reduction was assessed and it provides an evolved discussion for improvements in energy absorption capacity. The present case study focuses on two geometric models from the S3 slim toe cap development by prototypes made of a martensitic 1200 steel alloy. The comparison of results is complemented using numerical simulation models with mathematical description of the dynamic plasticity behaviour by applying a constitutive Cowper-Symonds equation with fundamental parameters for material strain-rate dependence.

Analysis of the Impact Resistance of Toecaps by the Finite Element Method: Preliminary Studies

“…According to the available literature data, research is being conducted on the use of high-strength steel to develop the design of the toecaps. Peixinho et al [27] assessed two prototype steel toecap models the final development of a new light-weight slim toecap for safety footwear. The intended approach of research has been to develop a solution that is based on a greater energy absorption capability due to the formulation of a specific geometric model of toecaps using ultra-high-strength steels, which leads to a substantial weight reduction.…”