A non-metallic aerodynamic structural surface static test loading device

Abstract

The invention relates to a non-metallic aerodynamic structural surface static test loading device, which belongs to the test technology and relates to the improvement of the aircraft aerodynamic structural surface static test loading device. Including a load distribution system composed of multi-stage load distribution mechanism, characterized in that the force rod [2] and the load distribution beam [1] in the load distributor of each level of load distribution mechanism pass through the universal ball joint [5 ] connection; there is a diagonal stay rod [4] between the two application rods [2] of the load distribution mechanism of the load distribution mechanism at each level, and there are two application rods [2] for each load distribution mechanism in the first-stage load distribution mechanism ] There is a tie rod [7] between the lower end. The invention is suitable for performing static tests on small non-metal structural surfaces, does not cause any damage to the aerodynamic structural surfaces, has a stable load distribution system, and can accurately apply loads to the tested pieces.

Description

A non-metallic aerodynamic structural surface static test loading device Technical field The invention belongs to test technology, relates to the improvement of the static test loading device of aircraft aerodynamic structure surface. Background technique For various aerodynamic structural surfaces, it is necessary to carry out various test loading assessments, determine its bearing capacity situation, assessment Whether it meets the design requirements. For the aerodynamic structural surface with large structural size, the test clips are generally tested by means of tension and compression. Set up and conduct tests. However, for the structural surface of small structural size, if it is a metal part, it is generally used to punch on the test surface. The test fixtures are arranged in the form of holes, and the multi-point distributed load strength assessment of structural parts can be carried out by using the multi-level lever composite effect test. None of the abov...

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Problems solved by technology

Since the aerodynamic structural surface of non-metallic materials such as composite materials does not allow any damage to it, it cannot be used

Second, if the method of pasting the canvas sheet is adopted, it will affect the surface strength of the specimen, and the test cannot be completed in most cases

Its disadvantages are: the load distribution system is unstable and easy to collapse; when the stress surface is deformed

, the error between the load value transmitted by the force rod 2 and the theoretical value is large

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