Cable simulation device and cable simulation method in ship mooring physical model test

Abstract

The invention discloses a cable simulation device and a cable simulation method in a ship mooring physical model test. The cable simulation device comprises a box body, wherein tracks, spring systems, as well as a fixed plate and a tension plate which are horizontally arranged in parallel up and down, are arranged inside the box body; the tension plate can slide up and down along the tracks; the spring systems comprise a plurality of springs and connection pull rods which are different in lengths; the cable simulation method comprises the following steps: according to stress deformation characteristics of a cable to be simulated, the length of each spring and the length of each pull rod are calculated and determined, so as to constitute the spring systems and to keep connection with the tension plate; graded pulling forces are exerted; corresponding elongation of the tension plate is measured; through the spring systems with various lengths, nonlinear tension-elongation relation of the cable is simulated and the tension-elongation relation curves are drawn; the tension-elongation relation curves are compared with the stress deformation theoretical curves of the simulated cable; errors of the test results are checked. The cable simulation device provided by the invention solves technical problem of nonlinear load and deformation relation simulation of the cable in a ship mooring physical model test; the operability is good; the accuracy and the efficiency are high; the experimental effects are favorable.

Description

technical field [0001] The invention belongs to the technical field of water transportation engineering, and relates to a ship mooring physical model test device and method suitable for coast, offshore and inland waters, in particular to a cable simulation device and method for ship mooring physical model test. Background technique [0002] With the development of economic globalization, shipping has occupied a supporting position in the long-distance transportation market with its unique advantages of economy, efficiency, safety and environmental protection. The booming development of the shipping industry has brought unprecedented opportunities for large-scale ships and deep-water terminals. It also poses new challenges to the requirements of port construction. Along with the rapid development of large berths, it often occurs that the mooring cables of large ships break under the effects of wind, waves, tides, etc., causing serious accidents. The force on the mooring ship...

AI Technical Summary

Problems solved by technology

[0003] In the currently commonly used ship mooring physical model test, it is impossible to simulate the nonlinear relationship between the tension and deformation of the cable. The simulation of the elastic modulus of the cable is mainly considered. Generally, materials with similar deformation are found, such as reduced steel wire ropes and nylon wires. In the experiment, the tension and deformation of the cable should be considered separately, and multiple experiments are required.

The operability and accuracy are poor, the test efficiency is low, and the test effect is poor

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