User login


You are here

Modal Analysis

Postdoc (2 years) on Machine learning techniques for interpretation of vibrational data

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.

Seeking a Postdoc position on vibrations

Hi everyone,

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

My research interests mainly include:

MMSLab-CNR's picture

NOSA-ITACA code 1.1c is now available

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

MMSLab-CNR's picture

Call for Abstract Submission to Civil-Comp 2019 Special Session CC16. Structural Health Monitoring and Model Updating for Heritage Structures

Dear Colleagues,

You are cordially invited to submit your abstract to our Special Session CC16. Structural Health Monitoring and Model Updating for Heritage Structures for The Sixteenth International Conference on Civil, Structural & Environmental Engineering Computing (Civil-Comp 2019).

Date & Location: 16-19 September 2019, Riva del Garda Italy.

Abstract submission deadline: 15 April 2019.

MMSLab-CNR's picture

Modal analysis of historical masonry structures: Linear perturbation and software benchmarking The mechanical behavior of masonry materials has a common feature: a nonlinear behavior with high compressive strength and very low tensile strength. As a consequence, old masonry buildings generally present cracks due to permanent loads and/or accidental events. Therefore, the characterization of the global dynamic behavior of masonry structures should take into account the presence of existing cracks.

MMSLab-CNR's picture

NOSA-ITACA: a free finite element software for structural analysis

NOSA-ITACA is a software product of the Mechanics of Materials and Structures Laboratory of ISTI-CNR, distributed via the 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.

Postdoctoral vacancy (3 years) on high-frequency vibration techniques for non-destructive inspection of 3D printed metal parts


The use of 3D printed metal structures is taking a very fast ramp-up in industry. General Electric has demonstrated the possibility of printing titanium fuel injectors for their LEAP engine, EADS has printed a nacelle hinge bracket for the Airbus A320, Boeing is printing plastic inlet ducts for high-altitude aircrafts, hip implants and other prosthetics are exploiting the design freedom of additive manufacturing (AM),...

praka2010's picture

Why mode shapes are not mass normalized when it is subjected to ambient excitation?

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

praka2010's picture

How to obtain mode shapes from FRF modal analysis?

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

ali.asgari.tabari's picture

how to edit/correction mesh (in ansys workbench)?


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 ?




HELP : Modal Analysis of Piezoelectric UEL Element

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.

Modal steady state and transient Analysis in ABAQUS




Hysteretic damping in modal analysis using ANSYS


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?


Modal analysis

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.

Modal Analysis in Ansys to get natural frequencies and compare them with theory results

Hi, I'm Pietro, a short term Italian incoming student at VT (virginia tech).

My advisor, in order to start my thesis there about skin friction coefficients in a scramjet combustion chamber, gave me a Modal analysis to do on a gage described as follow:

a cantilever beam  (1mm diameter and 3cm long cylindrical shape) with 1mm depth and 1cm diameter cylindrical flat "hat" attached upon.

Base constraints: zero displacements, zero rotation

Subscribe to RSS - Modal Analysis

Recent comments

More comments


Subscribe to Syndicate