A kind of fixture and its method and sample for plate compression shear fracture analysis sample

Abstract

The present invention relates to the technical field of testing equipment for mechanical properties of materials, and in particular to a clamp for plate compression shear fracture analysis sample and its method and sample. The clamp includes: a bottom plate, 2 rear splints and 2 front splints; 2 The rear splints are respectively arranged symmetrically at the ends of the upper base plate and the lower base plate, and the two front splints are respectively symmetrically arranged at the ends of the two rear splints. During the test, the front splint, the processed sample and the rear splint are locked together, and the rear splint is connected with the ring clamp on the bottom plate through two pulleys to form a slidable connection body, the test angle is adjusted and locked, and then the The bottom plate is connected to the universal testing machine, and the three-dimensional digital image correlation measurement system is used to record the deformation process of the sample. When the sample is broken, the plate compression shear fracture test can be completed. The device of the present invention can adopt a single sample to realize fracture analysis of various compressive shear stress states, and ensure that the sample has a relatively large deformation amount and the deformation is stable and uniform.

Description

technical field [0001] The invention relates to the technical field of testing equipment for mechanical properties of materials, in particular to a fixture for a plate compression-shear fracture analysis sample, a method thereof, and a sample. Background technique [0002] Entering the 21st century, my country's automobile industry is one of the fastest-growing industries in recent years. However, with the improvement of environmental, energy, and safety requirements, reducing fuel consumption and reducing waste emissions through lightweight automotive materials has gradually become a current research hotspot. The extensive demand for high-performance and complex parts in the automotive industry poses a huge challenge to lightweight manufacturing processes. During the forming process of high-performance complex parts, materials will undergo various processing processes, such as rolling, extrusion, bending, deep drawing, flanging and punching. However, the thin-walled sheet ...

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Problems solved by technology

For sheet metal, there are many challenges in studying the failure behavior in the compressive and shear dominant stress intervals

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