Effect of the Rounding Radius of Supports on the Accuracy of Determining the Interlayer Shear Modulus of Reinforced Plastics from Short-Beam Bending Tests

Authors: Shcherbakova A.O.; Sapozhnikov S.B.

Source: Mechanics of Composite Materials, Volume 37, Number 3, 6 May 2001 , pp. 265-270(6)

Publisher: Springer

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Abstract:

The accuracy of determining the elastic constants of reinforced plastics is estimated based on bending tests of short beams using the results of a numerical experiment with known elastic constants of the specimen material. Several combination variants for the initial values of the shear modulus and support radius are considered. It is shown that the calculation error of the shear modulus is considerably higher than that of the elastic modulus A decrease in the shear modulus increases the accuracy of its determination. The radius of supports affects this accuracy insignificantly.

Keywords: glass-fiber-reinforced plastics; short beams; elastic modulus; shear modulus; transverse bending; experimental determination; numerical experiment; contact deformations; sliding down from supports

Language: English

Document Type: Regular paper

Affiliations: 1: South-Ural State University, Chelyabinsk, Russia

Publication date: 2001-05-06