Multi-angle adjustable device for testing sample simultaneously bearing tensile and shear forces

Abstract

The invention discloses a multi-angle adjustable device for testing a sample simultaneously bearing tensile and shear forces. The multi-angle adjustable device is composed of a pair of fastening loading devices. Each one fastening loading device comprises a connecting fastening component and a loading clamping plate. The connecting fastening component is divided into a connecting plate and a fastening plate. The middle of the fastening plate is provided with a sample hole. The loading clamping plate is movably connected to the connecting plate so that the loading clamping plate is directed tothe centroid of the sample. Through change of the joint position between the loading clamping plate and the connecting plate, the sample angle can be changed. The fastening plate is welded to the connecting plate. The device can be used for testing a bolt or a rivet simultaneously bearing tensile and shear forces so that the mechanical properties of the bolt or rivet under combined action of tensile and shear forces along the rod axis direction are researched and the failure criterion under tensile and shear forces is obtained.

Description

technical field [0001] The invention belongs to the field of stress testing experimental equipment, in particular to an experimental device capable of simultaneously loading tension and shear. Background technique [0002] In various engineering fields such as construction, bridges, automobiles, and aerospace, bolt or rivet connections have gradually become an increasingly common connection form, which has the advantages of convenient construction, fast installation, and no welding heat impact. Bolts or rivets in actual engineering are often under complex loads and simultaneously bear the joint action of tensile force and shear force. If the bolts are designed independently according to the tensile strength or shear strength index of the bolts, the actual stress situation cannot be accurately calculated. , or waste materials, or cannot guarantee engineering safety. The key to solve this problem is to conduct tests on bolts or rivets under the joint action of tension and she...

AI Technical Summary

Problems solved by technology

However, the existing test devices are often unable to conveniently carry out mechanical tests of bolts or rivets under the joint action of tension and shear force, which affects the scientific research personnel and designers on the mechanical properties of bolts or rivets under tension and shear stress. Research

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