Fuselage panel test keel device and manufacturing method thereof
A fuselage wall panel and keel technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of easy warping of the edge plate of the keel device, inability to assemble the keel group, and different geometric dimensions, so as to achieve low cost and good structure The effect of simplicity and high device stability
Active Publication Date: 2019-03-22
CHINA AIRPLANT STRENGTH RES INST
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Problems solved by technology
The most feasible method in the existing technology is to use "H" shaped steel to make the keel device through cold bending or hot bending. The edge plate of the keel device processed in this way is easy to warp and wrinkle. The geometric dimensions of each piece of the keel device produced are different, and it cannot be assembled into a keel group to complete the test. Even if the keel group is barely assembled, the error is beyond the allowable range of the fuselage panel test
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[0039] In order to better understand the fuselage wall panel test keel device according to the scheme of the present invention, a preferred embodiment of the fuselage wall panel test keel device of the present invention will be further explained in conjunction with the accompanying drawings.
[0040] Such as Figure 1-Figure 5 As shown, the fuselage wall panel test keel device provided by the present invention includes a keel, which is composed of a keel edge plate 1, a keel web 2, and a keel reinforcement plate 3. The welding fixture is composed of stud bolts 4, fixture edge plates 5, flat washers 6, and nuts 7. Among them, the keel edge plate 1 is parallel to each other and the plate surface is a flat plate structure, the keel edge plate 1 is an arc-shaped plate whose curvature matches the curvature of the fuselage cylinder; the keel web 2 is set on the keel edge plate 1 Between, perpendicular to the keel edge plate 1; the keel reinforcement plate 3, arranged between the keel ...
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Abstract
The invention relates to the technology of strength test of an airplane structure, in particular to a fuselage panel test keel device and a production method thereof. The fuselage panel test keel device and the production method are used in mechanical property research of a fuselage panel structure test. Keel reinforcing plates are rectangle structural parts and are arranged between keel margin plates and on the two sides of keel web plates. Clamp margin plates are matched with the keel margin plates. Studs are vertically arranged between the clamp margin plates. The studs pass through bolt holes to be matched with plain washers so that the keel margin plates are fixed on the clamp margin plates. The width of the fuselage panel test keel device can be designed according to the length of a test piece of a fuselage panel, and the fuselage panel test keel device is stable in structure. The fuselage panel test keel device is produced by welding and drill plate drilling methods. The keel margin plates are smooth, and the positions of the bolt holes on the keel margin plates are identical. A keel group can be assembled smoothly. The fuselage panel test keel device is low in cost and meets the requirements of the test.
Description
Technical field [0001] The invention relates to the technical field of aircraft structural strength testing, in particular to a fuselage wall panel test keel device and a manufacturing method thereof. Background technique [0002] The fuselage panel is a very typical and particularly important structural form in the fuselage structure of transportation aircraft. The structural test is the most reliable way to obtain the mechanical properties of the fuselage panel. The fuselage panel test needs to design a keel device to simulate the aircraft. For the boundary conditions of the body panels, multiple keels are assembled into a keel group to simulate the stress field of the fuselage panel on the fuselage cylinder. In the prior art, the mechanism of the keel is as Figure 7 Shown. [0003] The keel device has an arc-shaped structure with a large cross-sectional size and a thin-walled structure. Therefore, the design and processing of the keel device has become the technical bottleneck o...
Claims
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IPC IPC(8): G01N3/02G01N3/62
Inventor 臧伟锋陈安董登科
Owner CHINA AIRPLANT STRENGTH RES INST