Um esquema eficiente para a análise dinâmica transiente com o método dos elementos de contorno

Abstract

This work concerns the optimization of the time marching scheme commonly used to obtain numerical Boundary Element Method solutions for two-dimensional transient problems governed by the Scalar Wave Equation. Two truncating schemes are proposed, named Intermediate and Mixed, which permit control over errors originated from truncation, being therefore possible to keep such errors at an acceptable level for engineering purposes. Storage area and CPU time economy are remarkable, making the procedure developed worthwile to be implemented. Comparison of results obtained employing the aforementioned truncating schemes with those obtained from the non-truncated version was made for three numerical examples, and confirmed the efficiency of the formulation.