WIT Press


Dynamical Analysis Of Frame Type Structures With Local Stiffness Reductions By A New Finite Element Based On The Dynamic Stiffness And Mass Matrices

Price

Free (open access)

Paper DOI

10.2495/CMEM030011

Volume

33

Pages

10

Published

2003

Size

405.31 kb

Author(s)

M. Skrinar

Abstract

Dynamical analysis of frame type structures with local stiffness reductions by a new finite element based on the dynamic stiffness and mass matrices M. Skrinar Faculty of Civil Engineering, University of Maribor, Slovenia Abstract The paper presents the basic steps leading to the derivation of the stiffness and mass matrices for the new dynamic finite element for beam-type slender elements with transverse crack. It further discusses its implementation in the dynamical analysis of cracked frame structures. Although the basic idea of the paper is devoted to cracks, the application can also be utilised for the modelling of other local stiffness reductions or plastically deformed parts of structures, as for example plastic hinges. 1 Introduction Despite careful design, cracks or other types of local stiffness reductions might appear on a structure during its utilisation. Although a crack or another local weakness of a structural member does not mean that the structure will collapse, it is especi

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