CONTRIBUTION TO RANDOM VIBRATION NUMERICAL SIMULATION AND OPTIMISATION OF NONLINEAR MECHANICAL SYSTEMSJournal: Scientific Journal of Silesian University of Technology. Series Transport (Vol.103, No. 10)
Publication Date: 2019-06-30
Authors : Milan SÁGA Milan VAŠKO Marian HANDRIK Peter KOPAS;
Page : 143-154
Keywords : statistical linearisation; sensitivity analysis; structural optimising;
This study considered the solution of the stochastic vibration of non-linear mechanical systems with Gaussian random excitations. It realised a short review of linearisations techniques in stochastic dynamics mainly with application in the area of truss finite element modelling. The presented method of statistical linearisation is applied to numerical testing. In the second part of the article, the sensitivity analysis of the first two stress statistical moments and structural weight minimising subjected to the random stress constrains presented by mean value and standard deviation was brought to the fore. Cross-sectional areas were used as optimising parameters.
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