Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, Cape Town,1999 / Smart structures technology featuring a network of sensors and actuators, real-time
control capabilities, computational capabilities and host material will have tremendous
impact upon the design, development and manufacture of the next generation of
products in diverse industries. The idea of applying smart materials to mechanical and
structural systems has been studied by researchers in various disciplines. Among the
promising materials with adaptable properties such as piezoelectric polymers and
ceramics, shape memory alloys, electrorheological fluids and optical fibers,
piezoelectric materials can be used both as sensors and actuators because of their high
direct and converse piezoelectric effects. The advantage of incorporating these special
types of material into the structure is that the sensing and actuating mechanism becomes
part of the structure by sensing and actuating strains directly. This advantage is
especially apparent for structures that are deployed in aerospace and civil engineering.
Active control systems that rely on piezoelectric materials are effective in controlling
the vibrations of structural elements such as beams, plates and shells. The beam as a
fundamental structural element is widely used in all construction. The purpose of the
present project is to derive a set of approximate governing equations of smart composite
beams. The approximate analytical solution for laminated beams with piezoelectric
laminae and its control effect will be also presented. According to the review of the
related literature, active vibration control analysis of smart beams subjected to an
impulsive loading and a periodic excitation are simulated numerically and tested
experimentally.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:cput/oai:localhost:20.500.11838/1262 |
| Date | January 1999 |
| Creators | Huang, Da |
| Publisher | Peninsula Technikon |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Rights | http://creativecommons.org/licenses/by-nc-sa/3.0/za/ |
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