Novel testing device applicable to bending plate stretching

Abstract

The invention discloses a novel testing device applicable to bending plate stretching and belongs to the field of testing dynamics of structures. According to the novel testing device, a sliding baffle block guide track is fixedly arranged at one end above a base; a sliding baffle block is moveably connected with the sliding baffle block guide track; a fixed baffle block is arranged at the other end above the base; the sliding baffle block and the fixed baffle block are connected through front and rear action cylinders; a support rod guide track is transversely arranged in the central positionabove the base; a testing part support device is moveably connected with the support rod guide track; the testing part support device is positioned between the sliding baffle block and the fixed baffle block. The novel testing device is simple and reliable in structure, the loading testing of bending plate stretching can be efficiently achieved, the stress at a structure transformation part is balanced, the contradiction between support and moveability is solved, in addition, the novel testing device is high in loading precision, simple and convenient to maintain and wide in use application.

Description

technical field [0001] The invention relates to the field of structural test mechanics, which is used to fix and apply tensile loads to bent plates, analyze and compare the ultimate load and failure mode of bent plate structures under tensile loads, and specifically refers to a method to ensure that the wall is in the whole loading process Test apparatus for plates subjected to pure tensile loads. Background technique [0002] In a variety of engineering structures in the aerospace field, the structural parts made of various materials are complex stress-bearing members, they usually have a turning point in the structural form, and are under complex stress states in various environments for a long time. Therefore, the strength of these structural parts under various environments is an important research topic in structural mechanics. In the design of modern engineering structures, it is necessary to study the strength of the structure under specific loads and environments. I...

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Problems solved by technology

[0003] For a long time, it has been very difficult to achieve low cost for this type of material testing

For the bending plate tensile test, two-way hydraulic servo testing machine can be used at present, but because these equipment are expensive, they have strict requirements on the use environment and personnel operation, and high energy consumption requires high test cost. Moreover, the size of the structural parts is limited by the size and tonnage of the testing machine, and it is difficult to evaluate the mechanical strength of the buckled plate under large structural parts and heavy loads.

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