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The paper presents the effectiveness of the
parametric integral equation system (PIES) in solving 3D
boundary problems defined by NavierLame equations on the
example of the polygonal boundary and in comparison with
the boundary element method (BEM). Analysis was performed
using the commercial software “BEASY” which bases on the
BEM method, whilst in the case of PIES using an authors
software. On the basis of two examples the number of data
necessary to modeling of the boundary geometry, the number
of solved algebraic equations and the stability and accuracy
of the obtained numerical results were compared.
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