Computation of structural intensity in plates

KHUN MIN SWE

Publication

Computation of structural intensity in plates

KHUN MIN SWE

Abstract

The structural intensity which is defined as the vibratory energy flow per unit area is calculated for several types of plate structures using the finite element method. The structural intensity technique is acknowledged as a key method for vibration control and structural borne sound reduction and it is calculated from stress and velocity. The structural intensity of plates with multiple dampers is studied to explore the energy flow phenomenon in the presence of many dissipative elements. The energy dissipation and transmission characteristics of loosened joints are explored over the plate-plate structure connected by two bolts. Loosened bolts are modeled with spring-dashpot systems. The structural intensity technique has been proposed to describe and examine the dynamics characteristics of plates with cutout. Near cutout energy flow pattern is introduced. The structural intensity technique is further extended to study flaw detection and identification.