Large-amplitude translational-rotational coupling vibration experimental device loaded with force and moment control

Abstract

The invention discloses a large-amplitude translation / rotation-coupled vibration experiment device loaded under the control of force and torque. The device comprises a portal frame, vibration structure plates, loading springs, a three-way acceleration sensor and a displacement sensor, wherein the portal frame includes two supporting columns, a top cross beam, a bottom cross beam and a bearing platform used for fixing a damper and disposed between the top cross beam and the bottom cross beam, the vibration structure plates include an upper-part vibration structure plate and a lower-part vibration structure plate, the loading springs include a horizontal loading spring and a vertical loading spring, the three-way acceleration sensor is arranged on the upper-part vibration structure plate, and the displacement sensor is arranged between the upper-part vibration structure plate and the top cross beam. The experiment device of the invention is strong in applicability and simple in operation; and the device is applicable to experimental simulation of various ocean engineering structures, ships and submarines, high-speed trains, super-large-span building structures, military and civil aircrafts, spacecrafts and the like.

Description

Technical field [0001] The invention relates to a large-amplitude translational rotation coupled vibration experimental device loaded by force and moment control. Background technique [0002] Most actual engineering structural systems, such as various marine engineering structures, ship submarines, high-speed railway trains, ultra-long span building structures, military and civilian aircraft, and spacecraft, will vibrate under external loads. Whether it is to optimize and analyze the existing system, or to carry out innovative concept research and design, vibration experiment simulation is required. Under certain working conditions, these engineering systems will experience large amplitude, translational and rotational vibrations coupled with multiple degrees of freedom after being subjected to external loads (forces and moments). For this reason, there is a great need for a universal experimental device for large-amplitude coupled vibration that can simulate this load control ...

AI Technical Summary

Problems solved by technology

However, large-scale special experimental equipment such as marine engineering pools are expensive and scarce, and the cost of experiment and measurement is also very expensive, so they cannot be widely used

It is not convenient to discover new phenomena and carry out principle experiments through experiments at any time during the exploratory research and development process; and because a large number of experiments cannot be repeated, it is not convenient to explore the changing rules of some sensitive parameters and carry out optimal design

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