The Selection of Materials for the Auto-Body Deformation Zones

Abstract

Nowadays, it is important to select the proper material for parts of the car-body’s deformation zones in terms of passenger safety. Due to wide range of high-strength steels on the market, the article presents the way of selecting the material by determining the deformation work and the stiffness constant, both measured by the stretch-bending test. The procedure was verified on a high-strength micro-alloyed steel HSLA, high-strength multi-phase steels DP 600 and TRIP, and an austenitic stainless steel AISI 304. The results indicate the austenitic steel is better to use in the deformation zones for the frontal impact, while multi-phase steels are more suitable for deformation zones at the lateral impact. The regression model describing the dependence of the deformation work measured at the stretch-bending test and the deformation work measured at uniaxial tensile test was defined as well. The model allows predicting the deformation work at stretch-bending test based on the mechanical properties measured by the tensile test.

A Real Test and Simulation Result Comparison of Selected Properties of Hybrid Composite Materials

“…A number of factors could have caused these differences in the measured values. In [29][30], research has been conducted in the field of integrating composite materials with other material types for selected applications in the automotive industry. The authors note that composite materials in automotive body structures showcase high potential, especially in the context of reducing vehicle weight, fuel consumption, and emissions during the vehicle's lifespan.…”