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Abstract

It is common practice to ignore the measurement of the horizontal force that acts on the Arcan apparatus when it is used in the clamped configuration. A simplified theoretical and finite element analyses for different isotropic and orthotropic butterfly specimens are presented. The results show that it is crucial for the reliability of the measurements to take the effect of the horizontal force into account. Expressions for possible errors in the normal and shear stresses in the elastic regime are derived as a function of stiffness properties and loading angle. An a posteriori correction procedure for the existing data is presented. An example application is given by correcting the previously measured biaxial failure surface of a honeycomb.

Keywords

arcan test biaxial testing composites honeycomb foam

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References

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Analysis of the Arcan Apparatus in the Clamped Configuration

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