NACA-TN-691, NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS TECHNICAL NOTE 391: SOME ELEMENTARY PRINCIPLES OF SHELL STRESS ANALYSIS WITH NOTES ON THE USE OF THE SHEAR CENTER (01-MAR-1939)

NACA-TN-691, NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS TECHNICAL NOTE 391: SOME ELEMENTARY PRINCIPLES OF SHELL STRESS ANALYSIS WITH NOTES ON THE USE OF THE SHEAR CENTER (01-MAR-1939)., The analysis of various types of shell under combined bending and torsion is discussed. The calculation and the use of the shear center are touched upon as incidental problems. Twelve fully worked numerical examples are given in an appendix.