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On forced response of polygonal plates

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Summary

An approximate solution is presented for the linear isothermal response of viscously damped thin homogeneous polygonal plates subjected to uniform dynamic loading. Normal modes of vibration are determined with the aid of a boundary collocation technique and forced solutions are calculated by employing a numerical integration procedure. The solution is applicable to elastically built-in plates having edge conditions ranging from the simply supported to the clamped case. Numerical solutions are given for the normal modes of vibration of some simply supported and clamped plates and theoretical and experimental transverse displacements and stress couples are compared for a plate subjected to blast loading.

Übersicht

Es wird eine Näherungslösung für die Bewegung von homogenen, polygonalen Platten unter gleichförmiger dynamischer Belastung angegeben. Dabei wird Linearität, viskose Dämpfung und isothermes Verhalten vorausgesetzt. Die Eigenschwingungsformen werden mit einer Kollokationsmethode berechnet, während die erzwungenen Schwingungen durch numerische Integration bestimmt werden. Die Lösungen können für elastisch eingespannte Platten verwendet werden, deren Randbedingungen von der einfachen Auflage bis zur festen Einspannung reichen. Für einige aufgelagerte und eingespannte Platten werden numerische Lösungen für die Eigenschwingungsformen angegeben. Für eine Platte mit Stoßbelastung werden theoretische und experimentelle Werte für Verschiebungen und Momente verglichen.

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This work was carried out at the Defence Research Establishment Suffield, Alberta as well as at the University of Alberta, Edmonton, Alberta and permission to publish the results is gratefully acknowledged.

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Walkinshaw, D.S., Kennedy, J.S. On forced response of polygonal plates. Ing. arch 38, 358–369 (1969). https://doi.org/10.1007/BF00532474

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  • DOI: https://doi.org/10.1007/BF00532474

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