Repair of cracked column under axially compressive load via piezoelectric patch

    Authors

    Q. Wang;S. T. Quek

    Comments

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    Abbreviated Journal Title

    Comput. Struct.

    Keywords

    buckling analysis; smart materials and structures; piezoelectric; actuator; piezoelectric sensor; cracked column; numerical simulations; ACTIVE BUCKLING CONTROL; FINITE-ELEMENT ANALYSIS; ACTUATORS; SENSORS; BEAM; Computer Science, Interdisciplinary Applications; Engineering, Civil

    Abstract

    This paper discusses the buckling capacity and piezoelectric material enhancement of cracked column structures with standard boundary conditions. A model of the rotational discontinuity at the crack location is used to develop analytical buckling solutions and the effect of the crack on the buckling capacity of the damaged column is derived analytically. Small piezoelectric patches are employed to induce local moments to compensate for the decreased buckling capacity of column structures, using a mechanical model coupled with piezoelectric strain-voltage relations. Numerical simulations are conducted to study the variation of the voltage supplied to the piezoelectric layer with the variation of the boundary constraints of the column. The issue of sensor placement is also discussed to avoid impractical design of the voltage applied to the piezoelectric patch. (c) 2005 Elsevier Ltd. All rights reserved.

    Journal Title

    Computers & Structures

    Volume

    83

    Issue/Number

    15-16

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    1355

    Last Page

    1363

    WOS Identifier

    WOS:000229693100017

    ISSN

    0045-7949

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