Force control loading and layout variable vertical vibration experimental device

Abstract

The invention relates to a force control loading and layout variable vertical vibration experimental device which comprises an n-type steel frame, a vertical vibration plate, a loading spring, an acceleration sensor, a displacement sensor and an adjustable damper. The n-type steel frame comprises two supporting stand columns, a top transverse beam, a bottom transverse beam and a bearing platform, and the bearing platform is used for fixing a vibration absorber and located between the top transverse beam and the bottom transverse beam. The vertical vibration plate can be elastically and vertically arranged between the top transverse beam and the bottom transverse beam in an up-and-down vibration mode. One end of the loading spring is connected with the vertical vibration plate, the other end of the loading spring is connected with an electric vibration loading table, and the loading spring is used for exerting the predetermined external force on the vertical vibration plate. The acceleration sensor is arranged on the vertical vibration plate and used for measuring the accelerated speed of the vertical vibration plate in the vibration stress loading process. The displacement sensor is arranged between the vertical vibration plate and the top transverse beam and used for measuring the displacement value of the vertical vibration plate in the vibration stress loading process. The adjustable damper is arranged between the vertical vibration plate and the top transverse beam and used for adjusting and controlling the damping of the vertical vibration plate in the loading vibration stress loading process.

Description

technical field [0001] The invention relates to a vertical vibration experiment device with force-controlled loading and variable layout. Background technique [0002] Vibration systems are often encountered in practical engineering problems such as marine engineering structures, large-scale bridge buildings, super-long-span building structures, and aerospace satellite missile launches, machinery and instrumentation. Whether optimizing an existing system or conducting innovative research and design, experimental simulation is required. [0003] For example: at present, oil exploration is developing towards the ocean, and structures such as offshore platforms are beginning to be used more. However, these structures will produce obvious vibrations under harsh sea conditions, threatening the safety and reliability of platforms or pipelines. For large bridge buildings, when the wind load frequency is within a certain range, it will arouse a large dynamic response of the bridge...

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Problems solved by technology

However, the number of such experimental equipment is small, and the cost of experiments and measurements is expensive, and it is not convenient to discover new phenomena through experiments at any time during the exploratory research and development process, to carry out principle experiments, and it is not convenient to analyze the laws of some sensitive parameters and optimized design

[0005] At present, the common vertical electric vibrating table can only achieve acceleration control, but to study the vibration reduction problems of the above-mentioned engineering structures, more accurate force loading control is needed; moreover, the working stroke of the vertical electric vibrating table and other electromagnetic loading devices is generally It is not large enough to meet the requirements of the large-stroke vibration test of the structure; in addition, for some vibration damping devices, due to the special requirements for their layout, it is necessary to implement a flexible and variable layout of the experimental device in multiple ways. At present, there is no experimental device

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