The Occurrence Limit of Strain Nonuniformity in Thin-Walled Cylinders Subjected to Cyclic Torsion

Masami Kobayashi; Koji Uetani; Tomohiro Mikami

doi:10.4028/www.scientific.net/KEM.340-341.1411

Paper Titles

Nonlinear Analysis of R/C Frame under Static and Cyclic Loadings
p.1387

Failure Mode Analysis for Column over Designed Ductile Frames
p.1393

Quasi-Static and Dynamic Axial Crushing of Various Polygonal Tubes
p.1399

Basic and Optimum Column Over-Design Factor Avoiding Story Mechanism for Frame Structures
p.1405

The Occurrence Limit of Strain Nonuniformity in Thin-Walled Cylinders Subjected to Cyclic Torsion
p.1411

Superplastic Properties and Microstructure of Friction Stir Welded Joints of Zn-22wt.%Al Alloy
p.1417

Residual Stresses in TIG-Welded I-Beams. Experimental Test-Setup and Validation of Numerical Model
p.1425

Assessing the Flaws in Welded Seam of Header of a 300MW Steam Turbine Generator Unit
p.1431

Multi Stage Seaming Process for Large Tubular Mechanical Bonded Structure
p.1437

HomeKey Engineering MaterialsKey Engineering Materials Vols. 340-341The Occurrence Limit of Strain Nonuniformity in...

The Occurrence Limit of Strain Nonuniformity in Thin-Walled Cylinders Subjected to Cyclic Torsion

Abstract:

The symmetry limit theory for 3-D continua developed by the authors, is applied to predictions of the occurrence limit of nonuniform strain in cylinders subjected to cyclic torsion. Bifurcation analysis of a steady-state path, which was defined as a continuous sequence of steady states generated under continuous increasing amplitude cyclic loading, is performed for the cylinder model. The deformation mode with very short wavelength in the circumferential direction is obtained, analogous to that in the internal buckling of a rigidly confined continuum shown by Biot. It is shown that this circumferential short-wave mode occurs at much smaller amplitude than the bifurcation under monotonic torsion.