Finite Dynamic Elements and Modal Analysis | Zendy

N.J. Fergusson | Zendy; W. D. Pilkey | Zendy

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Finite Dynamic Elements and Modal Analysis

Author(s) -

N.J. Fergusson,

W. D. Pilkey

Publication year - 1993

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/1993/975327

Subject(s) - finite element method , structural dynamics , modal analysis using fem , modal , modal analysis , displacement (psychology) , stiffness matrix , cantilever , structural engineering , mass matrix , stiffness , static analysis , matrix (chemical analysis) , direct stiffness method , modal testing , dynamic problem , mathematical analysis , mathematics , engineering , physics , algorithm , materials science , psychology , composite material , neutrino , nuclear physics , polymer chemistry , psychotherapist

A general modal analysis scheme is derived for forced response that makes use of high accuracy modes computed by the dynamic element method. The new procedure differs from the usual modal analysis in that the modes are obtained from a power series expansion for the dynamic stiffness matrix that includes an extra dynamic correction term in addition to the static stiffness matrix and the consistent mass matrix based on static displacement. A cantilevered beam example is used to demonstrate the relative accuracies of the dynamic element and the traditional finite element methods.

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