Modal Analysis

Additive manufacturing of metal alloys yields great potential for the aerospace industry (and others) as it allows the generation of geometrically complex structures with high specific strength, low density and high corrosion resistance. For example, General Electric has demonstrated the possibility of printing titanium fuel injectors for their LEAP engine, Boeing incorporated more than 300 printed parts in their 777X airplane … For such critical applications, the structural quality of printed parts is of utmost importance. Small deviations in print conditions, e.g.

Hi everyone,

I have a Ph.D. in mechanical engineering and seek a postdoc position on vibrations.

My research interests mainly include:

The new version of the code presents an improved and more intuitive
management of the subroutine and an easier use of Job monitor dialogue.
Enjoy it
http://www.nosaitaca.it/software/

NOSA-ITACA is a software product of the Mechanics of Materials and Structures Laboratory of ISTI-CNR, distributed via the http://www.nosaitaca.it/software/ website.
The package includes SALOME v8.3.0, and is available for Ubuntu 14.04 and 16.04.
NOSA-ITACA enables you to conduct both linear and nonlinear static analyses and modal analyses.
NOSA-ITACA can be used to study the static behavior of masonry buildings of historic and architectural interest and model the effectiveness of strengthening operations.

Dear Abaqus users,

If the modal properties are obtained from ambient excitation, then the mode shapes will not be mass-normalized. what may be the reason ? 

I am finding difficulties to obatain the mode shape from Frequency Response Function (FRF). Let know me the brief procedure in the modal analysis. 

Hi 

i want to analysis a model in anasys workbench with modal analysis.but i Encountered to problem.Bad mesh generation (as you see in the below figure) happened that i don know how to solve it,could anyone help me ?

Regards,Ali 

Any one help me out ,How to estimate stiffness matrix of beam  using modal experimental method?

Hello Experts,

I am trying to do modal analysis on user-defined piezoelectric shell element. My eigen value probelm of free vibration is given in the attachment.

Hello,

I want to do modal analysis of a structure with viscoelastic material. The viscoelastic
material has a complex youngs modulus E= E (1+i*g), where g is the loss factor. In ANSYS, modal analysis ignores all
nonlinearity, so how can I perform modal analysis with viscoelastic material?

OR

Hello
I am doing a Modal analysis on a structure made up of 3D-Beam4, Mass21 and Shear panel 28. To be more clear, the structure looks like a cube made up of Beam element on all 12 edges with Mass21 element at all corners of the cube and also with shells (shear panel 28) at all six faces of the cube.