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Shell vs. brick elements in buckling analysis

Submitted by Anonymous (not verified) on

Dear All:

I have a structural problem which deals with "Buckling" analysis of a boom with a rectangular cross-sectional area

and 0.25 in. thickness.

Can I use brick element (8 nodes) instead of shell element to simulate buckling of this type of structure? 

Thank you for your insight.

David.

Disk vs blade natural frequencies

Submitted by cryogene on

I'm trying to determine the coorelation of a blade natural frequency and disk (nodal diameter) natural frequency on a Turbine wheel in ANSYS Modal analysis.  Is it possible for a blade natual frequency to be excited even though a disk natural frequency is not being excited??  I'm having trouble determining if a blade frequency is related to any disk nodal diameter.  Thanks for any incite on this subject.

FEA Improves Reliability of Flip-Chip Packaging

Submitted by Zhen Zhang on

On Aug 10, 2009, Semiconductor International (SI) Newsbreak published a report on my work in AMD about 3D fracture study of underfill delamination as the top story in that issue.  I have never imagined that. Except the pleasure I received from this good news, I wonder if this work is also interesting to iMechanica community.  For that reason, I attach here the SI news report and the original paper published on ITherm2008 Proceedings. Welcome any comments and thoughts.

 

The Boundrical Conditions On Knee Model

Submitted by saveh on
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Hello All Dear:

I have a model of the knee with its soft tissue between 2 femur and Tibia Bones, then I want to load 2 boundrical condition

s on it , 1- The 6-DOF's of Tibia and Femur Bones Center of Mass, (x,y,z,R1,R2,R3) time dependent. and 2-The

concentrated  load that is exerted on the cross section of the Tibia Shank (Lower Bone) Time Dependent. Then Dear, Can

anyone Help Me,Please how to Put these 2 kinds of Boundrical Conditions on the Model.

Kind Regards.

Amir Hossein.

FEAP

Submitted by fernando.romagnoli on
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Hello All,

 

Actually I am analysing the FEM software FEAP, it is a free FEM software that can be downloaded from:

http://www.ce.berkeley.edu/projects/feap/feappv/

Anyone here knows if the software can run ONLY in cmd ?

I mean, I generate an input file I call the solver than the solver generates an output file without opneing any window in my desktop or in my cmd?

 Regards

Fernando Romagnoli 

 

 

 

Design Optimization Software HEEDS v5.3 Released

Submitted by Marcus Rademacher on

Red Cedar Technology recently released its latest version of their design optimization and process automation software, HEEDS v5.3. It has direct interfaces to Abaqus, LS-DYNA, and other tools.

Check out the press release, or go read about the new features.

NDE residual stress

Submitted by ennio curto on
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More information about residual stress tester





The residual stress in a metal do not depend on its hardness, but from the module of elasticity or Young module and from its chemical composition (density).

Wear Couple Charactersistics - CRES 347, 17-4 PH and Phosphor Bronze

Submitted by navanee on
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Hi,

Can anybody throw some light on the wear coupling characteristics between SS347 and 17-4 PH, as well as between Phosphor Bronze and 17-4 PH Steel?

It will be helpful if you could refer to some literature where I can learn about Wear Coupling Characteristics...

Thank You,

Navanee