The Effect of Inflated Backrest Stiffness on Shearing Loads Estimated with Articulated Total Body

TL;DR

This paper examines how artificially inflating backrest stiffness in ATB simulations affects shearing load estimates in vehicle impact scenarios and offers methods to evaluate simulation quality.

Contribution

It highlights the impact of inflated backrest stiffness on simulation accuracy and proposes quick assessment methods for simulation quality.

Findings

Inflated backrest stiffness leads to overestimated shearing loads.

Default contact-force models can produce unreliable simulation results.

Assessment methods improve simulation reliability.

Abstract

In the construction of simulations of rear-end vehicle impacts, the Articulated Total Body (ATB) software package can be a useful tool. In this article we discuss the effect of using artificially inflated values for seat-backrest stiffness in ATB simulations. We will also present methods for quickly assessing the quality of simulation results. In this connection, we will discuss the perils of using the default contact-force models that are included in ATB package releases.