17. The selection of optimal smoothing parameter for hybrid experimental-numerical photoelastic experiment

V. Kravčenkienė1, S. Aleksienė2, M. Vaidelys3

Kaunas University of Technology, Studentų str. 50-222, LT-51368 Kaunas, Lithuania

1Corresponding author

E-mail: 1violeta.kravcenkiene@ktu.lt, 2sandra.aleksiene@ktu.lt, 3martynas.vaidelys@ktu.lt

(Received 11 April 2013; accepted 7 June 2013)

Abstract. A strategy for the selection of optimal smoothing parameter for hybrid experimental-numerical photoelastic experiment is proposed in this paper. This is not a straightforward procedure for photoelastic analysis since conventional finite element techniques are based on the approximation of nodal displacements, not stresses. Although the displacements are continuous at inter-element boundaries, the calculated stresses are discontinuous due to the operation of differentiation.

Keywords: photoelasticity, smoothing, fringes.

References

[1]        Ramesh K., Pathak P. M. Role of photoelasticity in evolving discretization schemes for FE analysis. Journal of Experimental Techniques, Vol. 23, Issue 4, 1999, p. 36‑38.

[2]        Bathe K. J. Finite Element Procedures in Engineering Analysis. Prentice-Hall, New Jersey, 1982.

[3]        Ragulskis M., Ragulskis L. Conjugate approximation with smoothing for hybrid photoelastic and FEM analysis. Communications in Numerical Methods in Engineering, Vol. 20, Issue 8, 2004, p. 647‑653.

[4]        Ragulskis M., Ragulskis L. Plotting isoclinics for hybrid photoelasticity and finite element analysis. Experimental Mechanics, Vol. 44, Issue 3, 2004, p. 235‑240.

Cite this article

Kravčenkienė V., Aleksienė S., Vaidelys M. The selection of optimal smoothing parameter for hybrid experimental-numerical photoelastic experiment. Journal of Measurements in Engineering, Vol. 1, Issue 2, 2013, p. 106‑112.

 

Journal of Measurements in Engineering. June 2013, Volume 1, Issue 2
© Vibroengineering. ISSN Print 2335-2124, ISSN Online 2424-4635, Kaunas, Lithuania