Crashworthiness Improvement of the Side Crash by the Work Hardening Effect of Pre-Strained High Strength Steel

Hiroshi Yoshida; Akihiro Uenishi; Yukihisa Kuriyama; Manabu Takahashi

doi:10.4271/2001-01-3112

2001-10-16

Crashworthiness Improvement of the Side Crash by the Work Hardening Effect of Pre-Strained High Strength Steel 2001-01-3112

In order to examine the compatibility of improvement of crashworthiness with weight saving of automobiles by using high strength steel, a combination analysis of Finite Element Method and Dynamic Mechanical Properties has been established. Material properties used in this analysis have been measured by “one bar method” high velocity tensile tests, which can examine the deformation behavior of materials at a bend crush speed range (∼55km/h).

It was confirmed that the strength of steel measured by one bar method was raised remarkably after press and hydro forming of high strength steels. It was also confirmed by FEM analysis and load drop test that absorbed energy of bend crush was improved by pre-strain effect. Further, we proved that absorbed energy of bend crush was also improved by appropriate design of thickness and the ratio of bend span and plate length. These effects are applicable to respective high strength steels.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Crashworthiness Improvement of the Side Crash by the Work Hardening Effect of Pre-Strained High Strength Steel 2001-01-3112

SAE MOBILUS