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Sensitivity analysis of structural response uncertainty propagation using evidence theory

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Abstract

Sensitivity analysis for the quantified uncertainty in evidence theory is developed. In reliability quantification, classical probabilistic analysis has been a popular approach in many engineering disciplines. However, when we cannot obtain sufficient data to construct probability distributions in a large-complex system, the classical probability methodology may not be appropriate to quantify the uncertainty. Evidence theory, also called Dempster–Shafer Theory, has the potential to quantify aleatory (random) and epistemic (subjective) uncertainties because it can directly handle insufficient data and incomplete knowledge situations. In this paper, interval information is assumed for the best representation of imprecise information, and the sensitivity analysis of plausibility in evidence theory is analytically derived with respect to expert opinions and structural parameters. The results from the sensitivity analysis are expected to be very useful in finding the major contributors for quantified uncertainty and also in redesigning the structural system for risk minimization.

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Authors and Affiliations

  1. Department of Mechanical and Material Engineering, Wright State University, Dayton, OH, 45435, USA

    H.-R. Bae & R. V. Grandhi

  2. Department of Aeronautics and Astronautics, Air Force Institute of Technology, WPAFB, OH, 45433, USA

    R. A. Canfield

Authors
  1. H.-R. Bae
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  2. R. V. Grandhi
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  3. R. A. Canfield
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Corresponding author

Correspondence to R. V. Grandhi.

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Bae, HR., Grandhi, R.V. & Canfield, R.A. Sensitivity analysis of structural response uncertainty propagation using evidence theory. Struct Multidisc Optim 31, 270–279 (2006). https://doi.org/10.1007/s00158-006-0606-9

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  • DOI: https://doi.org/10.1007/s00158-006-0606-9

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