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S17 O Método dos Elementos de Contorno em Engenharia |
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Title:
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DISCUSSIONS ON THE TIME DOMAIN INTEGRAL REPRESENTATIONS FOR ELASTODYNAMICS ANALYSIS
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Summary :
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ABSTRACT: THIS ARTICLE DESCRIBES THREE POSSIBLE WAYS TO DERIVE TIME DOMAIN BOUNDARY INTEGRAL REPRESENTATIONS OF DISPLACEMENTS FOR ELASTODYNAMICS. THE SUBJECT IS QUITE SIMPLE, BUT THIS DISCUSSION WILL POINT OUT POSSIBLE DIFFICULTIES FOUND WHEN USING THOSE FORMULATIONS TO DEAL WITH PRACTICAL APPLICATIONS RELATED WITH THE BOUNDARY ELEMENT METHOD. THE DISCUSSION CAN GIVE US RECOMMENDATIONS TO SELECT PROPERLY THE CONVENIENT INTEGRAL REPRESENTATION TO DEAL WITH THIS KIND OF PROBLEM AND MAY OPEN THE POSSIBILITY OF DERIVING SIMPLIFIED SCHEMES. FOR INSTANCE, THE PROPER WAY TO TAKE INTO ACCOUNT INITIAL CONDITIONS APPLIED TO THE BODY IS AN INTERESTING POINT TO DISCUSS AND CAN ILLUSTRATE THE MAIN DIFFERENCES BETWEEN THE MENTIONED BOUNDARY INTEGRAL REPRESENTATION EXPRESSIONS, THEIR SINGULARITIES AND POSSIBLE NUMERICAL DIFFICULTIES TO BE FACED. |
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Author :
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Coda, Humberto Breves
Venturini, Wilson Sérgio
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Paper View :
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