Welcome to the heart of FEMCI online. The Book is an online library of useful information regarding finite element analysis, such as How-To's and engineering theory.

Additional information can be found through presentations given during FEMCI meetings. Visit the Presentations page.

If you are a NASA civil servant or one of our contractors and wish to contribute to the Book, then please send your work to us for consideration at Jeff Bolognese.
(We're sorry, but we cannot consider unsolicited works unless you are a NASA civil servant or directly associated with NASA.)

- Adhesive Modeling in Bonded Joints Explanation of one method of modeling the adhesive layer in a bonded joint.
- Coefficient of Thermal Expansion Explanation of CTE use for NASTRAN. Includes example case for Magnesium.
- Craig-Bampton Models Background, theory, creation and checking of C-B models
- Development of fixed base shake transfer functions Derivation of transfer functions using NASTRAN.
- Eigenvalue Extraction Methods in NASTRAN A survey of current methods and discussion on their use.
- Frequency Response - Random Vibration Example of a MSC.NASTRAN frequency response analysis run.
- See also the Random Vibration Analysis Information page.
- Large Mass example for MSC/NASTRAN v.70.7 or earlier is also available.
- Frequency Response - Sine Vibration Example of a MSC.NASTRAN frequency response analysis run.
- Definition of Double Amplitude (D.A.) in sine vibration.
- Large Mass example for MSC/NASTRAN v.70.7 or earlier is also available.
- Honeycomb Plate Guide for modeling honeycomb plates.
- Honeycomb PSHELL card Instructions for creating a NASTRAN honeycomb panel using PSHELL cards.
- Isogrid Plate Guide for modeling isogrid plates in NASTRAN.
- Modal Weight Calculations Mathematical equations for calculating modal weights (a.k.a. Effective weights or Modal mass participation).
- Method for recovering Modal Mass Participation Output For MSC/NASTRAN.
- Miles Equation Notes on how to use ... and NOT to use Mile's Equation.
- Preloads Guide to applying preloads with the Differential Stiffness Approach.
- Random Vibration Analysis Several pages to assist the engineer doing random vibe analysis.
- Semi-Rigid Connections Notes on non-ideal connections and joints.
- STOCS A User's Guide to the Structural Thermal Optical Component Shifts code.
- Unit Consistency A guide to keeping your units consistent throughout your analysis
- UNIX for Newbies Simple commands for those who need to do simple things on UNIX.
- Validity Checks A User's Guide to the mathematical validity checks every FEM must undergo.
- Includes a User's Guide to PCHSCAN.
- Yield Stress Notes A short discussion of Tresca and Von Mises' yield stress criteria.

* We have received a few requests for a "copy" of the FEMCI Book. You're reading it! There is no physical book, but rather this web page. It started out originally as a three-ring binder "book" but was made 100% electronic with the creation of the FEMCI website.

Ryan Simmons