Strength of Thin Walled Cylinders Subjected to Combined Compression and Torsion

Author: Lipp, James Everett

Year: 1935

Degree: Dissertation (Ph.D.)

Advisor: von Kármán, Theodore

Committee Members: von Kármán, Theodore; Klein, Arthur Louis; Millikan, Clark Blanchard; Sechler, Ernest Edwin

Option: Aeronautics

DOI: 10.7907/6Z0W-XJ59

Abstract

This thesis is an extension of the work which was started by Dr. Donnell and Lieutenant Bridget on the problem of thin metal cylinders under combined torsion and direct stress. An explanation of the shape of the compression vs. torsion curve is found by calculating the yield failure of an element of sheet considered as a column with both transverse and end loads. Several causes of variation in that curve shape have been brought to light, but must wait for very complete and accurate experiments or a complete theoretical treatment for verification.

Experiments have been extended to several new materials, and have given results which parallel the previous work on steel. In order to cover as wide a range of cylinders as possible, the data of reference no. 1 have been included with the present series of tests.

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