torsion
Principal Stresses explained with an experiment
This video explains the concept of principal stresses using an experiment
Visualizing bending and torsional deformation using experiment
This video contains an experimental demonstration of a simple bending and torsion and further speculate the nature of stresses induced by the respective loading scenarios
How the embryonic chick brain twists
During early development, the tubular embryonic chick brain undergoes a combination of progressive ventral bending and rightward torsion, one of the earliest organ-level left–right asymmetry events in development. Existing evidence suggests that bending is caused by differential growth, but the mechanism for the predominantly rightward torsion of the embryonic brain tube remains poorly understood.
How to model the Torsion of a bar in abaqus with displacement control?
Hi,
I have a bar with an analytical rigid surface attached at the free end with a RP at the centre of it. I am applying a rotational BC of UR3 = 0.017 (1 deg) with respect to the Z axis, but the resulting rotation at the end of the bar is more than 1 degree. Any idea why? Or how to have a full control of the twist of the bar? Also the bar deforms in shape where the end at which the twist is applied expands, making this cross-section bigger (clearly no the deformation expect for torsion). Input file attached in a word doc.
Constitutive modeling of tension-torsion coupling and tension-compression asymmetry in NiTi shape memory alloys
A 3D constitutive model is proposed and verified with experimental data. Tension-torsion coupling effect and tension-compression asymmetry effect is investigate for tube shape memory alloy.
Equivalent strain in large torsional deformation
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Dear All
Looking for a methodology to convert shear stress-shear strain data from a torsion test in large deformations into true strain-true stress curve, I found two schools of thought:
and
I found also in recent papers a strong debate on which should be the correct method. For example:
New Ebook on Elastic Solids at Amazon
This treatise provides a broad overview of the definitions of
fundamental quantities and methods of analysis for the use of solid materials
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range of material behavior where there is a one to one relationship between
load and displacement. Fundamental
methods of analysis and typical results for structures made of elastic solid materials
subjected to axial, bending, torsion, thermal, and internal pressure loading;
Analytical elastic-plastic solutions for the torsion of a round bar with a heterogeneous cross section
Hello,
I am trying to derive/find an analytical expression
for the torsion of a round bar made of an heterogeneous material. But I just do
not seem to find any solution available in the literature other than for a
homogeneous material, which can be find in any theory of plasticity book (e.g.
Theory of Plasticity, 3rd Ed., J. Chakarabarty, pp. 132-136).