Abstract
A new method of simulation of nonhomogeneous scalar discrete random fields is proposed. These fields are simulated by assuming the sequential basis of several points located at nodes of the regular nets. Moreover, the global envelopes of the fields are taken into account which is needed in simulating arbitrary boundary conditions. The local covariance matrices play the main role in the method. The assumed group invariance of the matrices leads to an useful classification of the random fields. Generated realizations of geometrical imperfections are the input for numerical solutions of compressed elastic-plastic thin-walled structures.
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