Table of Contents

1. Title Page
2. Introduction 
3. Compliant Parts in Assemblies 
4. Define Misalignment Gap by STA 
5. Force-Closed Assembly by FEA
6. The Stiffness Matrix 
7. Matrix Partitioning 
8. Stiffness Matrix Condensation 
9. Advantages of Super-Elements 
10. Two Plate Ex. 
11. Two Plate Ex.--Fundamental Equations
12. Two Plate Ex.--Solutions for Part Displacements
13. Four Assembly Solutions 
14. Two Plate Ex.--Super Elements 
15. Two Plate Ex.--Solving Using RMS method
16. Two Plate Ex.--Assembly Forces 
17. The Need For a Covariant Solution 
18. Presumed Statistical Solution 
19. Covariance 
20. Geometric Interpretation of Covariance 
21. Product of Inertia and Covariance 
22. Material Covariance 
23. Geometric Covariance 
24. FEA/STA Covariant Solution 
25. Plate Ex.--3 Sigma w/ Material Covariance
26. Plate Ex.--3 Sigma w/ Geometric Covariance 
27. Limits of Monte Carlo 
28. Advantages of FEA/STA 
29. Multiple Cases - Single FEA Model 
30. Conclusions 

Author: Ken Chase