Test fixture used for three-directional vibration test of thin and long elbow pipe and test method of test fixture

Abstract

The invention discloses a test fixture used for a three-directional vibration test of a thin and long elbow pipe. The test fixture comprises an X-directional mounting plate, a Y-directional mounting plate and a Z-directional mounting plate, wherein the X-directional mounting plate, the Y-directional mounting plate and the Z-directional mounting plate are vertically connected two by two; reinforcing plates are further arranged between the X-directional mounting plate and the Y-directional mounting plate, between the Y-directional mounting plate and the Z-directional mounting plate, and between the X-directional mounting plate and the Z-directional mounting plate; test piece mounting holes I and vibration platform mounting holes I are formed in the X-directional mounting plate; vibration platform mounting holes II are formed in the Y-directional mounting plate; test piece mounting holes II and vibration platform mounting holes III are formed in the Z-directional mounting plate. Meanwhile, the invention provides a test method. According to the test fixture, a test piece only needs to be mounted in one step through the conversion of a self mounting surface, then the vibration test in three directions of the test pieces with two types can be finished respectively; the dependence on a sliding platform is avoided; the requirements on the thrust of a vibration platform are reduced; the test efficiency is improved and the test cost is reduced.

Description

technical field [0001] The invention relates to the technical field of vibration test methods, in particular to a test fixture and a test fixture for three-way vibration tests of slender bent pipes that can be used for three-way vibration tests without a sliding table for two types of slender bent pipes. method. Background technique [0002] As an auxiliary equipment for horizontal vibration tests, the sliding table plays an important role in three-way vibration tests, especially when supporting large test pieces (such as complete machines), it is almost indispensable. However, when the weight of the sliding table is close to or even greater than that of the specimen, and the test level is large, most of the thrust of the shaking table is consumed by the exciting sliding table, which greatly reduces the utilization rate of the shaking table, and even the test cannot be carried out due to the limitation of the thrust. Therefore, in this case, it is necessary to improve the t...

AI Technical Summary

Problems solved by technology

However, when the weight of the sliding table is close to or even greater than that of the specimen, and the test magnitude is large, most of the thrust of the shaking table is consumed by the exciting sliding table, which greatly reduces the utilization rate of the shaking table, and even the test cannot be carried out due to the limitation of the thrust.

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