Strengths of solids under uniaxial compression

Beisetaev, R. B.; Nikiforovskii, V. S.

doi:10.1007/bf02594866

Cited by 2 publications

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“…Several studies show that the dimensions of the end constraints can affect the failure morphology of the unconfirmed compression specimen ( 4 , 5 , 7 ). If the end constraint was large, the specimen was broken after the double cone shape; and if the face constraint was small, the specimen formed a number of top-down cracks.…”

Section: Failure Mechanism Of Unconfined Compression Specimenmentioning

confidence: 99%

“…In 1976, Beisetaev and Nikiforovskii simplified the cylinder into a two-dimensional plane, and studied it by the two-dimensional finite element method. The face constraint and Poisson’s ratio was found to have a great influence on the stress and strain distribution, but they did not explore the impact of the law in depth ( 5 ). At this point, the theoretical study of the unconfined compression test was also maintained in the two-dimensional plane solution stage.…”

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confidence: 99%

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Mechanical Analysis of Unconfined Compression Test of Cylinder

Xiao

Tang

Chen

2018

Transportation Research Record: Journal of the Transportation R

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The unconfined compression test is widely used because of convenient specimen formation, simple experimental process, and low requirement for equipment. In view of the experimental characteristics, the axisymmetric mechanical model of a cylinder with horizontal friction was constructed and its elastic analytic solution was also deduced. The stress and the strain of the cylinder under unconfined compression with different boundary conditions were analyzed by using the analytical solution, and the failure characteristics of the cylinder under unconfined compression were studied and verified by laboratory testing. The results showed that the end restraint effect of the cylinder increased with the decrease of the height-to-diameter ratio and the increase of the Poisson ratio. When the end surface of the cylinder was constrained, the maximum tensile strain appeared in the middle of the cylindrical side; its value increased with the constraint effect, and greater loads were needed to make the same vertical displacement. The compressive strength derived from the current method would be too weak, and the compressive modulus of elasticity would be too great. If the end constraint was large, a small network crack first formed in the middle of the outer side of the cylinder, forming the double-tapered destruction. If the end face was weakly restrained, the cracks descended from the top to the bottom, and the specimens split.

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Section: Failure Mechanism Of Unconfined Compression Specimenmentioning

confidence: 99%

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confidence: 99%