Apparatus for testing the strength of polymers in a three-dimensional stressed state

Ol'khovik, O. E.

doi:10.1007/bf00604237

Cited by 6 publications

(1 citation statement)

References 1 publication

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“…Major deviations of the extended paraboloid criterion and the standard paraboloid criterion are obtained in comparison with the measured data of Ol'khovik et al. [28] for an epoxy resin, which is not described in detail. Here, the sensitivity of the extended paraboloid criterion as a function of the shear strength S can be clearly seen.…”

Section: Validation Of the Proposed Failure Criterionmentioning

confidence: 97%

A novel approach to consider triaxial tensile stresses within the framework of a failure criterion

Roetsch

Horst

2022

Z Angew Math Mech

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For use in micromechanical simulations of continuous fiber reinforced polymers, a more general form of the paraboloid failure criterion by Stassi‐D'Alia for matrix failure was developed with explicit consideration of the hydrostatic tension strength. Regarding polymers, limits for hydrostatic tensile strength based on isotropic linear elasticity could be derived. The comparison of the newly developed extended paraboloid criterion with experimental data for yielding as well as for material separation (fracture) shows good agreement.

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Section: Validation Of the Proposed Failure Criterionmentioning

confidence: 97%

A novel approach to consider triaxial tensile stresses within the framework of a failure criterion

Roetsch

Horst

2022

Z Angew Math Mech

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A novel constitutive model for geomaterials in hyperplasticity

Zhang

Chen

Huang

2018

Computers and Geotechnics

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Yield criteria for quasibrittle and frictional materials

Bigoni

Piccolroaz

2004

International Journal of Solids and Structures

228

147

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A new yield/damage function is proposed for modelling the inelastic behaviour of a broad class of pressure-sensitive, frictional, ductile and brittle-cohesive materials. The yield function allows the possibility of describing a transition between the shape of a yield surface typical of a class of materials to that typical of another class of materials. This is a fundamental key to model the behaviour of materials which become cohesive during hardening (so that the shape of the yield surface evolves from that typical of a granular material to that typical of a dense material), or which decrease cohesion due to damage accumulation. The proposed yield function is shown to agree with a variety of experimental data relative to soil, concrete, rock, metallic and composite powders, metallic foams, porous metals, and polymers. The yield function represents a single, convex and smooth surface in stress space approaching as limit situations well-known criteria and the extreme limits of convexity in the deviatoric plane. The yield function is therefore a generalization of several criteria, including von Mises, Drucker-Prager, Tresca, modified Tresca, Coulomb-Mohr, modified Cam-clay, and--concerning the deviatoric section--Rankine and Ottosen. Convexity of the function is proved by developing two general propositions relating convexity of the yield surface to convexity of the corresponding function. These propositions are general and therefore may be employed to generate other convex yield functions.

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Apparatus for testing the strength of polymers in a three-dimensional stressed state

Cited by 6 publications

References 1 publication

A novel approach to consider triaxial tensile stresses within the framework of a failure criterion

A novel approach to consider triaxial tensile stresses within the framework of a failure criterion

A novel constitutive model for geomaterials in hyperplasticity

Yield criteria for quasibrittle and frictional materials

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