ICCM Conferences, The 6th International Conference on Computational Methods (ICCM2015)

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Evidence-theory-based analysis for structural-acoustic field with epistemic uncertainties
Longxiang Xie, Jian Liu, XianFeng Man, YongChang Guo

Last modified: 2015-05-15

Abstract


Evidence theory has a strong capacity to deal with epistemic uncertainty, in view of the

overestimation in interval analysis, the responses of structural-acoustic problem with epistemic

uncertainty could be untreated. In this paper, a numerical method is proposed for structural-acoustic

system response analysis under epistemic uncertainties based on evidence theory. To improve the

calculation accuracy and reduce the computational cost, the interval analysis technique and radial

point interpolation method are adopted to obtain the approximate frequency response characteristics

for each focal element, and the corresponding formulations of structural-acoustic system for interval

response analysis are deduced. Numerical examples are introduced to illustrate the efficiency of the

proposed method.


Keywords


Structural-acoustic system response analysis, Evidence theory, Radial point interpolation method, Interval analysis, Finite element method, Epistemic uncertainty

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