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.