Interstage connecting structure with high damping and impact-resistant function

A connecting structure and impact-resistant technology, which is applied in transportation and packaging, space navigation equipment, space navigation aircraft, etc., can solve the problems of system complexity, lower reliability, sacrifice of structural rigidity, etc., and achieve strong environmental adaptability and light weight. Small weight, the effect of meeting the requirements of connection stiffness and vibration damping and buffering

Inactive Publication Date: 2019-03-15
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

However, some of these schemes embed flexible damping materials into the main force transmission path of the adapter, and generate damping output through large deformations, but sacrifice structural rigidity; some insert active actuating units into the main force transmission path, although the stiffness is controllable, but additional Advanced energy systems and controls make the entire system overly complex and reduce reliability

Method used

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  • Interstage connecting structure with high damping and impact-resistant function
  • Interstage connecting structure with high damping and impact-resistant function

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] An interstage connection structure with both high damping and shock resistance functions. Its vibration damping and buffering principle is to use metal sheets with different thicknesses to stack to form a periodic structure. By changing the load transmission path, the transmission of shock stress waves can be effectively attenuated. The gap suppresses the vibration energy transfer in the target frequency band.

[0017] Such as figure 1 , figure 2 As shown, the interstage connection structure 3 with both high damping and impact resistance functions is installed between the upper cabin section 1 and the lower cabin section 2 through bolt connection in actual use; the interstage connection structure with both high damping and impact resistance functions The connecting structure 3 includes a primary connecting piece 4 , a secondary connecting piece 5 and a constr...

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Abstract

The invention provides an interstage connecting structure with high damping and an impact-resistant function. The interstage connecting structure is formed by stacking metal arc-shaped sheets with different thicknesses. The impact-resistant frequency band of the structure is flexibly adjusted by adjusting the thicknesses of the metal sheets and the intervals between the sheets; damping constraintlayer is pasted along the outer side of a stack structure formed by the metal sheets, shear force can be generated when all the layers of metal sheets deform, and therefore high damping output of thedamping constraint layer is guaranteed. In addition, the connecting stiffness of the interstage connecting structure can be adjusted by adjusting the radians of the arc-shaped metal sheets, and the configuration requirements of different connecting structures can be met.

Description

technical field [0001] The invention relates to an inter-stage connection structure, which belongs to the technical field of structural vibration and noise control. Background technique [0002] For aerospace, marine ships, petrochemical and other engineering fields, there are various types of connecting structural parts. Usually, in order to ensure the stiffness of the connections between the structures, the connection structures are made of metal structures or materials similar to the materials of the structures; this leads to significant coupling vibration between the structures affected by external disturbances, and the attenuation effect is not obvious. For example, during the launching process of the launch vehicle, external load excitations such as rocket engine ignition pulsation shock, acoustic load, and random vibration are transmitted along the rocket body structure to the satellite through the star-rocket adapter, thereby affecting the spaceborne equipment to var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/64
CPCB64G1/641
Inventor 刘海平孙鹏飞罗婕
Owner BEIJING INST OF SPACECRAFT SYST ENG
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