Is There a Scientific Term for Twisting Stress?

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Discussion Overview

The discussion revolves around the concept of twisting stress, particularly in the context of materials like jello and steel beams. Participants explore how twisting forces can be described in terms of stresses and the dynamics involved in such scenarios.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant inquires whether jello would experience a twisting "jiggle" when spun and seeks terminology to describe this phenomenon in terms of stresses.
  • Another participant suggests that a twisted steel beam results from opposing shear forces acting on opposite sides, indicating a more complex problem involving rotational dynamics for jello.
  • A third participant identifies the term "torsion" as relevant to the discussion of twisting stresses.
  • A later reply acknowledges the term "torsion" and expresses frustration at not finding information on "twisting stress."

Areas of Agreement / Disagreement

Participants generally agree on the relevance of the term "torsion" in describing twisting stress, but there is no consensus on the complexities involved in the behavior of jello compared to more rigid materials like steel.

Contextual Notes

The discussion does not resolve the specific dynamics of jello under twisting stress, and assumptions about material behavior and definitions of terms like "twisting stress" remain unexamined.

cscott
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A "twisting" stress

If jello was spun 180 degrees back and forth on a horizontal plate, would it undergo some kind of twisting "jiggle"? If so how could I describe it in terms of stresses? Or even consider twisting in general...
 
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Something like a twisted steel beam could be caused by opposing sheer forces on opposite sides of the beam.

The Jello is more complicated then this, it seems like a problem in rotational dynamics.
 
cscott said:
If jello was spin 180 degrees back and forth on a horizontal plate, would it undergo some kind of twisting "jiggle"? If so how could I describe it in terms of stresses? Or even consider twisting in general...
The term you are looking for is torsion.
 
Thanks for your help guys

Gokul43201 said:
The term you are looking for is torsion.

No wonder I couldn't find anything on "twisting stress" :rolleyes:
 

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