Closed mast strength measurement method and special measurement device

A strength measurement and closed technology, which is applied in the direction of measuring devices, the measurement of elastic deformation force through measuring gauges, and the testing of machine/structural components, etc., can solve the problems of large differences and achieve high-precision results

CN101526438AInactive Publication Date: 2009-09-09HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2009-09-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a closed mast strength measurement method and a special measurement device. Stress and displacement response of the mast are measured by using a sucking disc spring scale loading device; response of the mast is measured by using a sensor bracket loading device; test values loaded on sides of the mast are accumulated in accordance with linear superposition principle in order to result in the test value under the action of all the loads, therefore, a mast model test is realized. On the basis of linear superposition principle, the invention, aiming at force-bearing features of the closed mast in the wind, provides a method in which the sides are loaded respectively to implement the model test. The invention, according to the feature that tension and pressure are jointly applied on the mast in the wind, provides the sucking disc spring scale loading system and the sensor bracket loading system to simulate the wind force that is applied to the mast; such two systems can realize surface tension loading and surface pressure loading of a complex structure. The invention solves the difficulty that non-wind tunnel test of mast scaled model test cannot be implemented, and offers an ideal alternative proposal for the design and the test of the closed mast.
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Description

(1) Technical field

[0001] The invention relates to a method for measuring strength, in particular to a strength test method for a scale model of a ship's closed mast. The invention also relates to a loading device for structural tension and pressure in the closed mast scaled model strength test method. (2) Background technology

[0002] Due to the need for stealth performance, modern ships gradually adopt closed masts. The closed mast is a thin-walled structure without stiffeners, and is made of composite materials with good wave permeability. Its rigidity is low and it is easy to be damaged due to instability. Therefore, it must have sufficient strength in structural design. At present, the numerical calculation method is generally used for the structural design of the closed mast, but the mechanical properties of the composite material are complex, and the error of the numerical calculation may lead to the destruction of the designed structure. Mast structure strength t...

Examples

Embodiment Construction

[0028] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0029] The special measuring device of the closed mast strength measuring method of the present invention comprises two parts: a suction cup spring scale loading device and a sensor bracket loading device; figure 1 , the composition of the suction cup spring scale loading device includes a rigid auxiliary support 1, a rope 2 connected to the rigid auxiliary support, a wire tensioner 3 and a spring scale 4 connected in series on the rope, and a suction cup 5 connected to the other end of the rope. The suction cup is adsorbed on the mast wall 6; combine figure 2, the composition of sensor support loading device comprises two rigid auxiliary supports 18, threaded rod 16 is installed on each rigid auxiliary support, force sensor 15 is installed on the threaded rod, loading support 12 is connected between two force sensors, each threaded rod The lower end of the nut ...