Compression fixture on mechanical tensile creep tester

Abstract

The invention discloses a compression fixture on a mechanical tensile creep tester. An opening is formed in one end of an upper rectangular ring; stepped surfaces are formed at two ends of the opening; the upper rectangular ring is perpendicularly nested with a lower rectangular ring; a spherical structure which sinks inwards is formed in one end, opposite to the opening, of the upper rectangular ring; a regulating spherical head is configured to be matched with the spherical surface, sinking inwards, of the upper rectangular ring; one surface of the regulating spherical head is matched with the spherical structure on the upper rectangular ring and the other surface of the regulating spherical head is a plane; an upper pressing head is fixedly arranged at one end, opposite to the regulating spherical head, of the lower rectangular ring and is in correspondence with the regulating spherical head; a lower connecting head is fixedly arranged at one end, opposite to the upper pressing head, of the lower rectangular ring; an upper connecting head is arranged at the opening end of the upper rectangular ring; stepped surfaces are formed at both ends of the upper connecting head, and are matched with and fixedly connected to the stepped surfaces on the opening of the upper rectangular ring; and pin holes matched with the tester are formed in the upper connecting head and the lower connecting head. The compression fixture disclosed by the invention can be used for completing compressive creep tests on an existing mechanical tensile creep endurance tester.

Description

technical field [0001] The invention belongs to the technical field of material mechanics research, in particular to a compression fixture on a mechanical tensile creep testing machine. Background technique [0002] The creep test is one of the important methods to reflect the viscoelastic mechanics of solid materials. The mechanical creep test device uses the gravity of the weight as the load for the creep test, so as to realize the constant load required by the creep test. Although the technology of mechanical creep test equipment has been developed and mature, its creep loading range is limited by the direction of force, so only tensile creep tests can be performed. In the study of viscoelastic mechanics of solid materials, many materials require compression creep tests due to their own structural reasons or mechanical performance requirements. In the literature "A thermo-viscoelastic-viscoplastic-viscodamage constitutive model for asphalt materials" The test carried out...

AI Technical Summary

Problems solved by technology

Although the technology of mechanical creep test equipment has been developed and mature, its creep loading range is limited by the direction of force, and only tensile creep tests can be performed.

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