

 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. 
 CraigBampton Models 
Background, theory, creation and checking of CB 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. 
 SemiRigid Connections 
Notes on nonideal 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. 

