principle strain

20:35 Mar 23, 2017
English language (monolingual) [PRO]
Mechanics / Mech Engineering
English term or phrase: principle strain
Hi,

Does anyone know what "principle strain" means here?

PhotoStress Separator Gages

If the sum of the ***principle strains*** can be determined at the same point where the difference in ***principle strains*** is measured, then the separate ***principle strain*** values are obtainable by simply solving equations simultaneously. The PhotoStress Separator Gage is based on this fundamental principle of mechanics.


http://www.vishaypg.com/micro-measurements/photo-stress-plus...
Patricia Posadas
Spain
Local time: 22:35


SUMMARY OF ALL EXPLANATIONS PROVIDED
5principle strain
Hoang Bao Lan


Discussion entries: 8





  

Answers


15 hrs   confidence: Answerer confidence 5/5
principle strain


Explanation:
The mechanics of computing principal strains is identical to that for computing principal stresses. The only potential pitfall to keep in mind is that the equations always operate on one-half of the shear values, γ/2.
The principal stresses are the corresponding normal stresses at an angle, θP, at which the shear stress, τ′xy, is zero.

Hope it helps!

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Note added at 15 hrs (2017-03-24 12:27:37 GMT)
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Maximum and minimum normal strain possible for a specific point on a structural element. Shear strain is 0 at the orientation where principal strain occurs.


    Reference: http://continuummechanics.org/principalstressesandstrains.ht...
    Reference: http://www.amesweb.info/StressStrainTransformations/PlaneStr...
Hoang Bao Lan
Vietnam
Local time: 11:35
Works in field
Native speaker of: Native in VietnameseVietnamese
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