Device for testing mechanical properties of thin sheet under simple shear loading

Abstract

The invention discloses a device for testing the mechanical properties of a thin sheet under simple shear loading. The device comprises a base, a left clamp assembly and a right clamp assembly oppositely arranged along the length direction of the base in parallel, a slider, and a fixing block of a concave structure, wherein the right clamp assembly is fixed on the slider; the slider is embedded in the fixing block; the fixing block is fixed on the base; the slider can slide on the fixing block to enable the right clamp assembly to move close to or away from the left clamp assembly; a draw barfor adjusting the distance between the left clamp assembly and the right clamp assembly is arranged between the fixing block and the slider; the left clamp assembly is fixed on a core; the core is fixed on the base through a second rail assembly; and the core can slide freely along the length direction of the base through the second rail assembly. Through the reasonable structure design, the device can achieve the more stable measurement in the thin sheet simple shearing test, and can flexibly adjust the distance between chucks clamping the sheet, thereby obtaining more accurate test data, and providing a method for studying the mechanical properties of the thin sheet under complex loading state.

Description

technical field [0001] The invention belongs to the technical field of testing the mechanical properties of thin plates, and relates to a device for testing the mechanical properties of thin plates, in particular to a device for testing the mechanical properties of thin plates under simple shear loading. Background technique [0002] In recent years, with the wide application of thin plate materials in industrial manufacturing, it is of great significance to study the mechanical properties of thin plates under different loading conditions for a comprehensive understanding of their mechanical properties and better application in engineering practice. [0003] When studying the Bauschinger effect of thin plates and the mechanical properties under orthogonal loading, etc., it is necessary to conduct compression tests on thin plates, but due to the characteristics of the thin plates themselves, normal compression tests cannot be performed; it has been found through research that ...

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Problems solved by technology

Due to the characteristics of simple shear loading, the deformation area in the middle of the thin plate will generate lateral force, which will destroy the conditions of simple shear; in addition, the clamped and fixed part of the thin plate is prone to tilt and side slip, and the traditional measurement method cannot accurately measure Shear-induced stress and strain, requiring advanced optical measurement setups

[0005] Based on the above reasons, domestic research on the mechanical properties testing of thin plates under simple shear loading is quite small, which restricts the comprehensive and accurate research on the mechanical properties of thin plates

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