Abstract
The fringe order and twice the isoclinic angle define a vector which allows to superimpose photcelastic data originating from identical locations by vectorial addition. The method holds true also for slices of the stress-freezing method. In a check of this method, the curves of pure bending result.
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Abbreviations
- F :
-
force (N)
- f :
-
isochromatic-fringe constant (N/fr·m)
- i :
-
row number
- j :
-
subscript
- k :
-
column number
- M :
-
bending moment (N·m)
- m :
-
error interval
- N :
-
isochromatic-fringe order (fr)
- n :
-
number of superimposed loads
- p, q :
-
principal stresses (Pa)
- r :
-
subscript denoting resultant
- t :
-
model thickness (m)
- x, y :
-
cartesian coordinates (m)
- θ:
-
isoclinic angle (deg)
- σ:
-
normal stress (Pa)
- τ:
-
shear stress (Pa)
References
Coker, E. G. andFilon, L. M. G., A Treatise to Photoelasticity, 2nd ed., Univ. Press, Cambridge, 258–260 (1957).
Föppl, L. andMönch, E., Praktische Spannungsoptik, 3rd ed., Springer-Verlag, Berlin/Heidelberg/New York (1971).
Frocht, M. M., Photoelasticity, John Wiley and Sons Inc., New York, Vol. I (1941),Vol. II (1948).
Frocht, M. M., Photoelasticity, John Wiley and Sons Inc., New York, Vol. II, 333–336 (1948).
Friedrich, G., Automatisiertes Schubspannungsdifferenzenverfahren mit Ausgleich zur vollständigen Auswertung in der Spannungsoptik, Doctoral Thesis, Technical University Munich, 140–152 (1974).
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Friedrich, G. Superposition of photoelastic data. Experimental Mechanics 17, 33–36 (1977). https://doi.org/10.1007/BF02324269
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DOI: https://doi.org/10.1007/BF02324269