Hi,
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how to find a longitudinal vibration of bar (axial vibration )using Ansys
he longitudinal mode has the velocity C L = { [ K + ( 4 / 3 ) G ] / ρ } 1 / 2 and the transverse mode has the velocity C T = { G / ρ } 1 / 2 . Here ρ is the mass density of the medium. In this case there is no distinction between phase velocity and group velocity.
thank you sir ch vijaya Kumar for answer
but my question is how to find it this longitudinal natural frequency with ANSYS or APDL
cause when i modeling the bar or beam with ansys the result i obtain is only transversal frequency Vijaya Kumar Chodavarapu
In the linear analysis, which you probably do, the axial displacement is neglected.
Mrain Soheir , to obtain the longitudinal vibration mode in ANSYS, you can use the beam element, but you will need to eliminate the two transverse DOFs of all the nodes. The beam element in ANSYS are mostly 3D beam elements.
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