Static and Dynamic Denting of Paint Baked AA6111 Panels: Comparison of Finite Element Predictions and Experiments Centre for Automotive Materials and Manufacturing

Format:

Conference/Event

Author/Creator:

Thomas, Dylan, author.

Conference Name:

International Body Engineering Conference & Exhibition and Automotive & Transportation Technology Congress (2002-07-09 : Paris, France)

International Body Engineering Conference & Exposition (2001-10-16 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2001

Summary:

This work presents comparisons of finite element model predictions of static and dynamic denting with experimental results. Panels were stamped from 0.81, 0.93 and 1.00mm AA6111-T4 and then paint-baked to produce representative automotive outer body panels. Each type of panel was statically and dynamically dented at three locations using a 25.4mm steel ball. Static denting was accomplished with incremental loading of 22.24N loads up to a maximum of 244.48N. Dynamic denting was accomplished by dropping the steel ball from heights ranging from 200mm to 1200mm. Multi-stage finite element analysis was performed using LS-DYNA1 and ABAQUS2 to predict the entire process of forming, spring-back, denting and final spring-back of the dented panels. The predicted results show good correlation with the experiments, but also highlight the sensitivity of the predictions to formulation of the finite element problem. To this end it is particularly important to use the best available material data, accurate element formulations, prior work hardening effects and a sufficiently refined mesh if accurate results are to be obtained

Notes:

Vendor supplied data

Publisher Number:

2001-01-3047

Access Restriction:

Restricted for use by site license