Introduction of New Concept U*sum for Evaluation of Weight-Efficient Structure

Paper #:
  • 2011-01-0061

Published:
  • 2011-04-12
DOI:
  • 10.4271/2011-01-0061
Citation:
Naito, T., Kobayashi, H., Urushiyama, Y., and Takahashi, K., "Introduction of New Concept U*sum for Evaluation of Weight-Efficient Structure," SAE Int. J. Passeng. Cars – Electron. Electr. Syst. 4(1):30-41, 2011, https://doi.org/10.4271/2011-01-0061.
Pages:
12
Abstract:
A new index U* for evaluating load path dispersion is proposed, using a structural load path analysis method based on the concept of U*, which expresses the connection strength between a load point and an arbitrary point within the structure. U* enables the evaluation of the load path dispersion within the structure by statistical means such as histograms and standard deviations. Different loading conditions are applied to a body structure, and the similarity of the U* distributions is evaluated using the direction cosine and U* 2-dimensional correlation diagrams. It is shown as a result that body structures can be macroscopically grasped by using the U* distribution rather than using the stress distribution. In addition, as an example, the U* distribution of torsion loading condition is shown to comprehensively include characteristics of the U* distribution of other loading conditions.
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