On an Incorrect Consistent Mass Matrix Formulation in the Dynamics of Trusses
In the recent bibliography of FEM applications in structural dynamics one can find an erroneous formulation of consistent mass matrix for truss-type element. The aim of the paper is to correct this formulation, to discuss the errors and to present the accurate values of eigenfrequencies computed for some selected types of plane trusses.
W.GAWROŃSKI, J.KRUSZEWSKI et al., Finite element method in structural dynamics, Arkady, Warszawa 1984 [in Polish].
T.Y.YANG, Finite element structural analysis, Prentice-Hall, Inc., Englewood Cliffs, New Jersey 1986.
O.C.ZIENKIEWICZ, Finite element method, Arkady, Warszawa 1972 [in Polish].
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Polish Academy of Sciences, Warsaw, Poland