Photoelastic Study of Beams on Elastic Foundations

by A. J. Durelli,
Vincent J. Parks,
Carson K. C. Mok,
HanChow Lee,

Serial Information: Journal of the Structural Division, 1969, Vol. 95, Issue 8, Pg. 1713-1725

Document Type: Journal Paper


The bending of beams supported by an elastic medium is analyzed using photoelasticity. Four models were considered: (1) A model representing a beam of infinite length with a concentrated control load; (2) a finite beam with a central load; (3) a finite beam with a load at the quarter point; and (4) a finite beam with two concentrated loads at the two quarter points. The bending moments, shears and contact pressures were obtained and compared with corresponding values for beams resting on a Winkler-type foundation. Several alternative ways of determining the pressure distribution at the surface of contact are presented. The analysis includes the stress distribution in the elastic medium.

Subject Headings: Beams | Elastic foundations | Elastic analysis | Concentrated loads | Stress distribution | Stress analysis | Bending (structural) | Structural models

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