A CONTRIBUTION TO THE ANALYSIS AND TO THE COMPUTATION OF ACOUSTICOBLASTIC PHENOMENA
Abstract
THE ACOUSTOELASTIC PHENOMENA ARE A CLASS OF FLUID-STRUCTURE INTERACTION PHENOMENA, WITH SPECIAL IMPORTANCE TO THE OVERALL SPECTRUM OF THE ABOVE PHENOMENA. THIS FACT IS DEVELOPED EXTENSIVELY IN PART 1 OF THE THESIS, WHERE A REVIEW IS ATTEMPTED OF ALL THE PHYSICAL FLUID-STRUCTURE INTERACTION PHENOMENA, THEIR TECHNOLOGICAL IMPORTANCE AND THE METHODS USED FOR THEIR ANALYSIS AND SOLUTION. ALTHOUGHA PROGRESS CAN BE OBSERVED AT THIS POINT, SIGNIFICANT PROBLEMS REMAIN, DUE MAINLY TO THE FACT, THAT AN ADEQUATE PHYSICAL AND SEMANTIC FRAMEWORK IS MISSING FOR THE ANALYSIS OF THE COUPLED SYSTEM. THUS, IN PART 2, THE GENERAL COUPLED ACOUSTOELASTIC SYSTEM IS EXAMINED FROM THE ENERGY POINT OF VIEW, DEVELOPING SUITABLE ORIGINAL VARIATIONAL PRINCIPLES. IN PART 3, THESE VARIATIONAL PRINCIPLES ARE DISCRETIZED USING THE FINITE ELEMENT METHOD, PRODUCING ALGEBRAIC SYSTEMS SUITABLE FOR PROCESSING WITH A COMPUTER. IN PART 4 THE DEVELOPMENT OF THE ACE ANALYSIS SYSTEM IS ANALYSED, BASED ON THE PREVIOUS ALGEBRAIC ...
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