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Aircraft modal test free boundary simulation unit and simulation system

A modal test, simulation unit technology, applied in aircraft component testing, machine/structural component testing, vibration testing, etc., can solve the problems of single aircraft, poor versatility, etc., and achieve the effect of good versatility

Pending Publication Date: 2021-10-08
北京奥航坤宇科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Most of the traditional aircraft modal test free boundary simulation systems can only be applied to aircraft with a single structural size, and there is a problem of poor versatility. Therefore, this application proposes an aircraft modal test free boundary simulation unit and simulation system

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  • Aircraft modal test free boundary simulation unit and simulation system
  • Aircraft modal test free boundary simulation unit and simulation system
  • Aircraft modal test free boundary simulation unit and simulation system

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Embodiment 1

[0033] Please refer to figure 1 , the present embodiment provides an aircraft modal test free boundary simulation unit, including a support mechanism with a load-bearing beam 1 and at least one first suspension mechanism 2 slidably connected to the load-bearing beam 1; the first suspension The sliding direction of the hanging mechanism 2 is parallel to the length direction of the load-bearing beam 1 . When in use, an appropriate number of the first suspension mechanisms 2 can be assembled on the load-bearing beam 1 as required. In this embodiment, two first suspension mechanisms 2 are installed on each of the load-bearing beams 1. In other embodiments of the present application, different numbers of first suspension mechanisms 2 may also be installed according to actual needs. .

[0034] The height of the support mechanism is 4.5 meters; the load-bearing beam 1 of the support mechanism is an I-shaped steel structure; the two ends of the load-bearing beam 1 are respectively a...

Embodiment 2

[0047] This embodiment provides an aircraft modal test free boundary simulation system, which is mainly used for the simulation test free boundary simulation requirements of different levels of products such as small and medium-sized aircraft with a mass of not more than 1 ton, subsystems and sections; The simulation system includes two aircraft modal test free boundary simulation units as described in embodiment 1; the first bridge beam 7 is connected between the load-bearing beams 1 of the two simulation units; The beam 7 is a square steel beam; the first bridge beam 7 is assembled with a second suspension mechanism 8; the number of the second suspension mechanism 8 can be determined according to actual needs; the second suspension mechanism The structure of 8 is the same as that of the first suspension mechanism 2, that is, as described in Embodiment 1, and will not be repeated in this embodiment.

[0048] The quantity of the first bridge beam 7 can be determined according ...

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Abstract

The invention provides an aircraft modal test free boundary simulation unit and simulation system. The aircraft modal test free boundary simulation unit comprises a supporting mechanism with a bearing cross beam and at least one first suspension mechanism slidably connected to the bearing cross beam; the sliding direction of the first suspension mechanism is parallel to the length direction of the bearing cross beam; the first suspension mechanism comprises a suspension assembly for suspending test pieces, a height adjusting assembly which is assembled and connected with the suspension assembly and is used for adjusting the suspension height of the suspension assembly, and a horizontal adjusting assembly which is assembled and connected with the height adjusting assembly; and the horizontal adjusting assembly is slidably connected to the bearing cross beam. According to the aircraft modal test free boundary simulation unit provided by the invention, the horizontal position and the height position of the suspension point can be adjusted, so that the suspension requirements of the suspension test pieces at different positions can be met, then free state modal tests can be carried out on aircrafts with different structural sizes, and the aircraft modal test free boundary simulation unit has good universality.

Description

technical field [0001] The present application relates to the field of aircraft modal test free boundary simulation technology, in particular to an aircraft modal test free boundary simulation unit and a simulation system. Background technique [0002] Modal test is an important means of structural dynamic analysis, and plays an important role in dynamic strength design, structural performance evaluation, fatigue life estimation and failure analysis of aerospace product development. Among them, the free boundary simulation equipment is a key component of the aircraft modal test system. During the modal test, the boundary state of the test piece is required to be consistent with the actual technical state. When the aircraft is in a free boundary state during flight, it is necessary to design a free boundary simulation device to transfer the test piece Flexible supports are used to simulate a free state as much as possible. The aircraft free boundary modal test involves diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02B64F5/60
CPCG01M7/02B64F5/60
Inventor 韩自然
Owner 北京奥航坤宇科技有限公司
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