Analysis of natural frequency and buckling load of cylinder by finite element method

The natural frequency and Euler buckling load are calculated by finite element method

These documents use finite element techniques to calculate natural frequencies and Euler buckling loads . Hermite beam elements are used as interpolation functions . Calculate assembly quality , Geometric stiffness matrix and stiffness matrix, and solve eigenvalues . Draw the first four pattern shapes . Four different boundary conditions are considered . According to the young's modulus required by the user , You can change the number of elements , Mass per unit length and boundary . Will use FEM The obtained value is compared with the theoretical value , And display the error percentage . The obtained values are in good agreement with the theoretical values . Using more elements can improve accuracy .

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