The higher order dynamic correction terms for the stiffness and inertia matrices associated with a triangular plane stress‐strain finite dynamic element are developed in detail. Numerical results presented indicate that the adoption of these matrices along with a suitable quadratic matrix eigenproblem solver effects a significant economy in the free vibration solution of structures when compared with the analysis based on the usual finite element procedure. A FORTRAN IV computer program listing of the various relevant element matrices is also presented in the Appendix.
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K. K. Gupta (1979) studied this question.
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