Adina Vibrations
Hi,
I´m analizing the modes of a structure but I don´t know how to plot the different modes (I only see the first one). I´m using Adina 8.7.3.
Thank you very much!
vibrations
gap of von mises stress between Ansys and Abqus
Hello ,
I am doing the correlation between Ansys and Abaqud for a shroud of cooling module (solid 92-C3D10) .I find the coorelation is perfect in frequency , but when i do the powerspectral density analysis, i noticed a gap of 10-20% on the peak value of nodal von mises stress , i'd like to know the reason of the diffrence .
Thank You .
Free Vibrations of Nonuniform Timoshenko Beams II
This post contains the equations of nonuniform Timoshenko beam theory, a seconf order finite difference method for the solution of the free vibrations thereof and a Scilab computer program implementation. The implementation also allows for the calculation of static deflection for a user specified load distribution that can also contain point loads. A number of static and free vibration examples are given.
I hope this can be useful to students and others.
Mechanics of love and happiness
An interesting application of non linear dynamics, including happiness with a simple 1D damped oscillator!
Rotor dynamics
“Project of automatic balancing system for rigid
rotors”
ABSTRACT
The paper presents the
conceptual design for the automatic system for balancing rigid rotors.
[LS-DYNA] Attenuating vibrations of shell element after an explosion
Free Tags
Hello!
The model I'm working on in LS-DYNA is a simple pyramid-shaped shell constrained along the bottom edges with all DOF taken. The material used is MAT_PIECEWISE_LINEAR_PLASTICITY. Above the model there's a LOAD_BLAST (Air burst) placed, which deforms the model after the explosion.
The issue is that the model seems to vibrate ininitely after the explosion, what can be seen on the attached images (first one shows the graph of "Rigid Body Displacement", second one shows close-up of the line within the yellow rectangle).