Multifunctional thin film three-axis tensile testing machine and testing method

Abstract

The invention discloses a multifunctional thin film three-axis tensile testing machine. The multifunctional thin film three-axis tensile testing machine comprises a horizontal double-axis testing device and a Z-axis tensile testing device, wherein the Z-axis tensile testing device is constructed above the horizontal double-axis testing device; the Z-axis tensile testing device comprises second stand columns, frameworks, a first fixed guide rail beam, a second fixed guide rail beam, a movable guide rail beam, a Z-axis platform, a first fixed plate, a movable rod, an electric cylinder, a second tension sensor and a second clamp. The invention further discloses a thin film three-axis tensile testing method which comprises a plurality of steps. The multifunctional thin film three-axis tensile testing machine and the testing method can realize multi-angle tension and have a multi-test function; the multi-angle tension comprises unidirectional static tension, low-cycle circulation back-and-forth tension, bidirectional static tension, low-cycle circulation back-and-forth tension with any double-axis stress ratio, three-dimensional connection part tension and low-cycle circulation back-and-forth tension with any three-axis stress ratio; the multifunctional thin film three-axis tensile testing machine is stable in operation, and the multifunctional thin film three-axis tensile testing machine and the testing method can be used for building membrane tests, airship skin tests and the like.

Description

technical field [0001] The invention relates to a tensile testing machine and a testing method, in particular to a multifunctional film triaxial tensile testing machine and a testing method. Background technique [0002] Polymer composite fabric film has the advantages of light weight, high strength, chemical resistance, durability, etc. It is widely used in modern architectural structures, aerospace and other industrial fields, such as architectural membrane structures, aviation airships, aerospace parachutes or soft landing systems. Fabric film materials have complex mechanical behavior characteristics, mainly manifested in nonlinearity, inelasticity, anisotropy, viscoelasticity, bidirectionality, etc. of the material. In recent years, researchers have continuously carried out experimental and analytical studies on the bidirectional mechanical behavior of membrane materials, and have achieved important research progress and results. However, in practical engineering appli...

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Problems solved by technology

However, in practical engineering applications, in addition to the uniaxial and biaxial mechanical properties of membrane materials, the mechanical properties of membrane connectors are also very important propertie

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