A high temperature resistant drop hammer device for dynamic response transfer characteristic test in thermal environment

Abstract

The invention relates to a high-temperature-resistant drop hammer device for dynamic response transfer characteristic test in a thermal environment, which is characterized in that it includes a mounting plate, a hammer head support, a support connecting rod, and a hammer head; one end of the support connecting rod is connected to the The upper surface of the mounting plate is rotatably connected, and the other end is fixed to the hammer head support; the hammer head is arranged at one end of the hammer head support, and the axis of the hammer head is perpendicular to the axis of the connecting rod of the support; The remote control line bracket fixed on the upper surface of the installation board, the other end of the remote control line bracket has a bracket opening; it also includes one end fixed on the support connecting rod, the other end passing through the bracket opening and Continue to extend the remote control line. The high-temperature resistant drop hammer device of the present invention overcomes the influence of high temperature, has simple structure, small scale, flexible and convenient use, and will not interfere with the heating system.

Description

technical field [0001] The invention relates to the field of testing of aircraft or other structural heating parts in a thermal environment, in particular to a high-temperature-resistant drop weight device for a dynamic response transfer characteristic test in a thermal environment. Background technique [0002] With the continuous advancement of the development of glider aircraft, the Mach number of the flight of the aircraft is getting higher and higher, and the temperature of its key structures increases greatly under the action of aerodynamic heat. In order to study the dynamic transfer characteristics of heated structures at high temperatures, it is necessary to carry out The dynamic response transfer characteristic test of the heated structure in a high temperature environment, and a difficult problem that needs to be solved in the thermal environment dynamic response transfer characteristic test is to perform a certain amount of transient drop weight excitation on the ...

AI Technical Summary

Problems solved by technology

After reviewing relevant patents and materials at home and abroad, there are no patents and literature related to high-temperature-resistant drop hammer devices. After investigation, it is known that due to the difficulty of dynamic response transfer characteristics tests at high ambient temperatures, such tests at home and abroad There are few tests. The structure and impact mode of the existing common drop weight device are relatively fixed, which is not suitable for the dynamic response transfer characteristic test with a heating system. The heating system and the drop weight will interfere with each other in structure, and the thermal environment The dynamic response transfer characteristic test under the following conditions requires different impact times, which have higher requirements on the material of the hammer head. The material of the hammer head must have high heat resistance and damping that meets the requirements. The hammer head is generally made of metal, nylon and rubber materials. Different materials are selected for different impact times, but nylon and rubber materials cannot withstand high temperatures.

Therefore, the existing drop weight device has obvious deficiencies, and cannot effectively complete the transient drop weight excitation of the test piece in a thermal environment.

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