Stress Analysis in Automobile Components Using Reflexive Photoelasticity Technique |
| Journal |
Applied Mechanics and Materials (Volumes 5 - 6) |
| Volume |
Modern Practice in Stress and Vibration Analysis VI |
| Edited by |
Patrick Sean Keogh |
| Pages |
117-124 |
| DOI |
10.4028/www.scientific.net/AMM.5-6.117 |
| Online since |
October, 2006 |
| Authors |
P. Smith Neto,
E.S. Palma,
V.M. Figueiredo Bicalho
|
| Keywords |
Automobile Component, Reflexive Photoelasticity, Strain Analysis, Strain Gauges, Stress Analysis |
| Abstract |
The main objective of this work was to introduce Reflexive Photoelasticity Technique in
qualifying automotive components at Fiat Automoveis S.A in Brazil. Actual stresses were
determined in a simple geometry plate and also in nodes of a body shell of a passenger vehicle by
using reflexive photoelasticity methodology. Initially, tests were performed in welded steel plates
submitted to traction loads. These plates were previously coated with birrefringent plastic material.
External loads were applied through hydraulic MTS actuators. Stress and strain distribution in
welded points neighboring areas using reflexive polariscope were quantitative determined.
Simultaneously, these stress and strains acting on the welded plate were determined using strain
gauges. The results from both experimental techniques (photoelasticity and strain gauges) were
compared with those obtained from a numerical model using finite element method. The results
were correlated and analyzed. Finally, reflexive photoelasticity technique was used to determine the
stresses in nodes of a body shell of a passenger vehicle. Through this analysis it was possible to
determine critical points in the structure with peak stresses. |
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