Help on DEFORMATION: Strength Rate Calculation

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Discussion Overview

The discussion revolves around the calculation of a strength rate related to deformation, specifically focusing on the relationship involving Burgers vector and dislocation density. Participants explore the implications of this relationship and clarify terms used in the context of material strength and work-hardening.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant proposes a formula for macroscopic strength rate involving Burgers vector, dislocation density, and average dislocation density.
  • Another participant questions the validity of this relationship, noting that it results in unusual units for strength rate.
  • A participant corrects a previous typing error, indicating that the intended term was average dislocation velocity instead of density.
  • There is a query about whether the discussion pertains to the strengthening rate from work-hardening of the material.

Areas of Agreement / Disagreement

Participants express differing views on the initial formula proposed, with some questioning its validity and others seeking clarification on terminology. The discussion remains unresolved regarding the correct formulation and its implications.

Contextual Notes

There are potential limitations related to the definitions of terms used, such as "strength rate" and "dislocation density," which may affect the interpretation of the proposed relationships.

SUPERSOUVIK
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Please prove that ,


macroscopic strength rate=(burger's vector)*(dislocation density)*(average dislocation density)
 
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Why would you think this relationship holds? This would give "strength rate" the units of m-3, which seems unusual.

The increase in strength from dislocation interactions is often modeled as (shear modulus)*(Burgers vector)*(square root of disl'n density).
 
SORRY BUT IT WAS A TYPING ERROR! ACTUALLY IT WAS average dislocation VELOCITY!
ALTHOUGH I have gave a new thread with modification!
 
SUPERSOUVIK,

Are you talking about the strengthening rate from work-hardening of the material?
 

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