Propagation of Uncertainties in Randomly Parametered Reduced and Coupled Finite Element Dynamic Models

摘要

The present paper deals with the reduction of the large stochastic finite element model with the reduction in its mechanical degrees of freedom. The procedure is based on the available reduction/condensation procedures. The response sensitivity is computed based on first and/second order sensitivities of eigensolution. The joint probability distribution of the response process is estimated using maximum entropy method. The response from the reduced FE model is compared with the response from full FE model. The analysis solution is validated with Monte Carlo Simulations.