The Inelastic Deformation of Pressurized Stainless Steel Tubes Under Dynamic Bending and Torsional Loading

[+] Author and Article Information
L. D. Larson

Bettis Atomic Power Laboratory, Westinghouse Electric Corporation, West Mifflin, Pennsylvania

W. F. Stokey

Department of Mechanical Engineering, Carnegie-Mellon University, Pittsburgh, Pennsylvania

J. Pressure Vessel Technol 99(2), 258-263 (May 01, 1977) (6 pages) doi:10.1115/1.3454530 History: Received May 24, 1976; Online October 25, 2010


A test program was conducted to investigate the inelastic response behavior of internally pressurized tubes subjected to dynamic bending and torsion loads. The basic experiment was a drop test in which the cantilever tube was dynamically loaded by a torque arm with a concentrated weight at the end. The experimental data consist of strain versus time records and peak and permanent deflections. Analytical predictions of the response were made using a lumped parameter beam model of the structure. This simple representation of the pressurized tube is made possible by use of an approximate analytical model for the inelastic deformation of a pipe element subjected to pressure, bending and torsion. The predicted responses are compared with measured responses to assess the accuracy of the models.

Copyright © 1977 by ASME
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