Small-size fender simulation device for model test

Abstract

The invention discloses a small-size fender simulation device for a model test. The small-size fender simulation device comprises a base, an elastic nesting part connected with the base and a collision head connected with the elastic nesting part, wherein a force sensor is arranged between the base and the elastic nesting part and is used for measuring a stress size of the simulation device; the elastic nesting part comprises a through rod, an inner sleeve, a rear sleeve and a front sleeve; pressure releasing holes are formed in the through rod, the rear sleeve and the front sleeve respectively; a first elastic body sleeves the through rod; a second elastic body and a third elastic body are further arranged in the front sleeve. By adopting a nesting manner, non-linear elastic modulus of a fender is simulated section by section and the core is stressed section by section; when the non-linear elastic modulus is simulated, the force and deformation of the fender can be measured; a structural design is simple and the volume and weight of the device are greatly reduced; the small-size fender simulation device is flexible and convenient to use and mount and can be directly mounted on a floating type facility model; parameters do not need to be adjusted, a rated speed is rapid and the accuracy is high.

Description

technical field [0001] The invention relates to the field of nonlinear elastic modulus simulation of fenders in physical tests of floating facilities, in particular to a small fender simulation device for model tests. Background technique [0002] In ship ocean engineering, physical model test is an important means to study the effect and influence of marine environmental dynamics such as wind, wave, and current on floating facilities (ships, floating structures such as floating docks, offshore platforms, etc.), and to solve engineering application problems. , while the fender nonlinear elastic modulus simulation and fender force-deformation measurement are one of the key and difficult points in the multi-floor test. Fenders, also known as rubber fenders, are installed on wharves or ships to absorb the collision energy between ships and wharfs or ships when docking or mooring, and buffer the impact force to protect ships and wharves from damage. At present, according to the...

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Problems solved by technology

[0005] The main problem of the existing large-scale elastic modulus simulation and fender force-deformation measurement device is that the structure is complex, and it is necessary to adjust the weight of the counterweight, the length of the spring, the installation position of the spring, the length of the limit screw, and the parameters of each part can be called out. The required nonlinear elastic modulus requires a long calibration time; another problem brought about by the complex structure is that the device is large in size and the corresponding device weight is also very large, and the weight of a single device reaches 2kg; it can only be fixed on the test platform If it is installed on the floating facility model, the moment of inertia of the floating body will change greatly, and the position of the center of gravity will shift significantly, which cannot satisfy the model test of the small mass of the floating body itself. Require

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