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Keywords: torsion
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Journal Articles
Article Type: Research Papers
J. Appl. Mech. July 2020, 87(7): 071002.
Paper No: JAM-20-1095
Published Online: April 21, 2020
...Xi Li; Bin Chen In understanding how a radially symmetrical actin cytoskeleton spontaneously evolves into a chiral system, here we construct a torsional clutch-filament model for one radial fiber. The model analysis indicates that when actin filaments in growth tend to actively drive the radial...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. October 2019, 86(10): 101012.
Paper No: JAM-19-1238
Published Online: August 31, 2019
... and Koiter (1973, “Asymptotic Approximations to Crack Problems,” Mechanics of Fracture, Vol. 1, G.C. Sih, ed., Noordhoff, Leyden, pp. 131–178) for the edge cracked, torsionally loaded cylindrical bar. Extensions of the theory are carried out for (i) the bi-cylinder problem and (ii) the decohesive...
Journal Articles
Article Type: Technical Briefs
J. Appl. Mech. December 2018, 85(12): 124501.
Paper No: JAM-18-1391
Published Online: September 21, 2018
...Kelin Chen; Stelios Kyriakides; Martin Scales The shear stress–strain response of an aluminum alloy is measured to a shear strain of the order of one using a pure torsion experiment on a thin-walled tube. The material exhibits plastic anisotropy that is established through a separate set of biaxial...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. September 2012, 79(5): 051018.
Published Online: June 29, 2012
... developed. The objective of this study is to derive the exact matching condition consistent with a 5-DOF higher-order beam theory at a joint of thin-walled box beams under out-of-plane bending and torsion. Here we use bending deflection, bending/shear rotation, torsional rotation, warping, and distortion as...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. November 2011, 78(6): 061005.
Published Online: August 24, 2011
... spring wire can be designed so the spring will not twist when it is extended nor extend when it is twisted. The constrained spring versus a freely rotating spring with the helix angle equal to π / 4 has the largest reduction in compliance in the limits of beam theory. Spring compliances for torsion and...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. May 2011, 78(3): 031021.
Published Online: February 17, 2011
... plate theory. In an illustrative example, explicit expressions of analytical solutions are obtained for torsion of a rectangular quasi-crystal plate. 19 04 2010 21 11 2010 05 01 2011 17 02 2011 17 02 2011 differential equations...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. March 2011, 78(2): 021013.
Published Online: November 10, 2010
... finite element governing equations have been derived in the framework of the Carrera unified formulation (CUF). The effectiveness of each expansion term, that is, of each displacement variable, has been established numerically considering various problems (traction, bending, and torsion), several beam...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. November 2010, 77(6): 061016.
Published Online: September 1, 2010
... compression or torsion. Prior to buckling, the vdW interactions have essentially no effect on the deformation of the double-walled carbon nanotube. The critical buckling strain of the double-wall carbon nanotubes is always between those for the inner wall and for the outer wall, which means that the vdW...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. July 2009, 76(4): 041014.
Published Online: April 27, 2009
...Mårten Alkhagen; Staffan Toll A random mass of loose fibers interacting by fiber-fiber contact is considered. As proposed in a previous paper, the elastic response is modeled based on the statistical mechanics of bending and torsion of fiber segments between fiber-fiber contact points. Presently we...
Topics: Fibers
Journal Articles
Article Type: Research Papers
J. Appl. Mech. July 2009, 76(4): 041004.
Published Online: April 22, 2009
... compatible three-noded curved beam element are used to model the shell panels and the stiffeners, respectively. As the usual formulation of degenerated beam element is found to overestimate the torsional rigidity, an attempt has been made to reformulate it in an efficient manner. Moreover the new formulation...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. May 2009, 76(3): 031006.
Published Online: March 9, 2009
...Fadi Dohnal; Aleš Tondl A theoretical study of a slender engineering structure with lateral and angular deflections is investigated under the action of flow-induced vibrations. This aero-elastic instability excites and couples the system’s bending and torsion modes. Semiactive means due to open...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. May 2009, 76(3): 031003.
Published Online: March 5, 2009
... this means that bending, torsion, and extensions can all be considered together in a particularly simple manner. By combining forces and torques into a six-dimensional vector called a wrench, Hooke’s law for the Timoshenko beam can be written in a very simple form. From here simple expressions can be...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. November 2008, 75(6): 061007.
Published Online: August 20, 2008
... external pressures, and torsion). Similar to the conventional shells, carbon nanotubes may undergo bifurcation under compression/torsion/external pressure. Our analysis, however, shows that carbon nanotubes may also undergo bifurcation in tension and internal pressure, though the bifurcation modes for...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. May 2008, 75(3): 031013.
Published Online: May 1, 2008
... reflect this enhancement in the strength properties, are mainly governed by the loading path complexity. The question of whether the performance of dynamic axially crushed tubes could be further improved by using the developed device (the absorption par compression-torsion plastique (ACTP)) generating a...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. January 2008, 75(1): 011002.
Published Online: December 27, 2007
... Approach . In the present paper on the basis of three-dimensional equations of the nonlinear elasticity the instability of a stretched infinite hollow cylinder under torsion and inflation is investigated. The bifurcational method of stability analysis is used. Results . The critical surfaces and stability...
Journal Articles
Article Type: Technical Papers
J. Appl. Mech. November 2007, 74(6): 1125–1133.
Published Online: January 4, 2007
... of the initial defect distribution, material fatigue resistance, and stress state are obtained. Examples of application of the model to predicting fatigue of beam bending and torsion and contact fatigue for tapered bearings is presented. 30 06 2006 04...
Journal Articles
Article Type: Technical Papers
J. Appl. Mech. July 2007, 74(4): 723–731.
Published Online: October 23, 2006
... uniaxial compression, although it is restricted to predominantly compressive deformations histories, due to neglect of frictional dissipation. Second, by allowing torsion as well as bending of fibers, this theory covers a larger deformation range. Compression experiments are performed on carded slivers of...
Journal Articles
Article Type: Technical Papers
J. Appl. Mech. May 2007, 74(3): 505–522.
Published Online: May 31, 2006
... hub in a centrifugal force field, a system of coupled partial differential equations are derived for the combined axial, lateral and twisting motions which includes the transverse shear, rotary inertia, and Coriolis effects, as well. In the mathematical formulation, the torsion of the thin airfoil...
Journal Articles
Article Type: Discussions
J. Appl. Mech. November 2005, 72(6): 981.
Published Online: November 1, 2005
.... , 1974 , “ Comments on the Paper ‘On an Accurate Theory for Circular Cylindrical Shells’ by S. Cheng ,” ASME J. Appl. Mech. 0021-8936 , 41 , pp. 541 – 542 . carbon nanotubes shells (structures) elasticity buckling torsion Poisson ratio variational techniques It is also important...
Journal Articles
Article Type: Technical Papers
J. Appl. Mech. March 2006, 73(2): 268–280.
Published Online: July 22, 2005
... application of the theory to the analysis of stress relaxation in the pure torsion of a circular cylinder containing unidirectional fibers aligned parallel to the cylinder axis. For this problem, the redistribution of shear stress and interface slip throughout the cross section, and the movement of singular...