Method for preparing universal box-type skin antenna vibration test clamp

Abstract

The invention discloses a method for preparing a universal box-type skin antenna vibration test clamp, provides a universal design method which has good structural manufacturability and high generalization and standardization degree, and aims to solve the problems of high specificity and high design difficulty caused by the characteristics that the shape of the outer edge of a skin of a skin antenna is uncertain and the skin antenna is conformal with an airplane. The method is realized through the following steps: 1, mainly Z-direction vibration, decomposing a clamp into plates, beams and reinforcing ribs, and constructing an initial shape of a bottom plate model of a lower box body of the clamp; 2, positioning positions and sizes of side plates and the reinforcing ribs of the lower box body according to the size of the bottom plate of the lower box body to obtain an initial shape of the side plate model of the lower box body; 3, positioning positions and sizes of an upper box body floor, side plates and reinforcing ribs based on the size of the lower box body, and cutting the side plates by adopting a lower curved surface of a skin to obtain an initial shape of an upper box body model; and 4, refining the shape of the clamp according to engineering application requirements to obtain the final shape of the clamp.

Description

technical field [0001] The invention relates to a method for preparing a universal box-type skin antenna vibration test fixture in the field of vibration fixture structure design. Background technique [0002] With the development of science and technology, especially the development of aerospace, machinery manufacturing and other industries, the problem of vibration has become an unavoidable problem. Vibration test is inseparable from vibration fixture. Due to the increasingly powerful equipment capabilities, more sophisticated manufacturing, and more and more complex environments, it is very difficult to completely solve the vibration problem theoretically. At present, it is not only necessary to simulate the complex vibration environment through vibration tests, but also to eliminate the increasingly important role of early product process and component defects through screening vibration tests. The airborne antenna needs to verify its structural vibration reliability p...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of strong specialization and difficult design caused by the indeterminate shape of the outer edge of the skin antenna and the conformal characteristics with the aircraft. In order to solve the shortcomings in the prior art, the structure based on the skin antenna A general design method for box-type skin antenna vibration experiment fixtures with short design period, good rigidity, good structural manufacturability, low fixture manufacturing cost, generalization of fixture components and high degree of standardization.

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