Motion and resistance testing device for ship and marine structures

A technology for marine structures and motion, used in the testing of machines/structural components, measuring devices, fluid dynamics tests, etc.

Inactive Publication Date: 2012-08-15
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for some complex hydrodynamic problems, the role of restraint model and semi-restraint model test is also irreplaceable

Method used

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  • Motion and resistance testing device for ship and marine structures
  • Motion and resistance testing device for ship and marine structures
  • Motion and resistance testing device for ship and marine structures

Examples

Experimental program
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Embodiment Construction

[0017] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0018] combine Figure 1~6 , the device includes a surge motion slide rail 10, a sway motion slide rail 19, a heave bar 4, a longitudinal motion block 3, a lateral motion block 17, a pitch limit and locking device 20, a pitch angle measurement sensor 21, a horizontal motion block Swing angle measuring sensor 23, swaying angle measuring sensor 27, swaying limit and locking device 28, force measuring balance 29, linear displacement sensor 31, heave motion tackle 32. Surge motion slide rail 10 and sway motion slide rail 19 are formed by parallelogram four-terminal hinges. When the upper side is fixed, its motion characteristic is that the lower side can only translate but not rotate, so as to ensure that the heave bar 4 is always in the vertical position. Location. The heave rod 4 can slide in the vertical direction, and its movement range is ±250mm. The lower end...

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PUM

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Abstract

The invention is designed for providing a motion and resistance testing device for ship and marine structures, which comprises surge-motion sliding rails, sway-motion sliding rails, a heaving rod, a longitudinal motion block and transverse motion blocks, wherein the longitudinal motion block is arranged on the surge-motion sliding rail, the transverse motion blocks are arranged on the sway-motion sliding rails, the numbers of the surge-motion sliding rails, the sway-motion sliding rails and the transverse motion blocks are respectively two, the two surge-motion sliding rails are arranged in an up-and-down mode between the two transverse motion blocks, the two sway-motion sliding rails constitute a quadrilateral structure by two rods, the heaving rod is arranged on the longitudinal motion block, an end point of the heaving rod is located at the center of gravity of a tested marine structure and connected with the tested marine structure, and the heaving rod is provided with a line displacement sensor. The device disclosed by the invention can simultaneously measure the six-DOF (degrees of freedom) coupled motions such as rolling, pitching, yawing, heaving, surging and swaying of ship and marine structures in waves and the resistances of ship and marine structures in waves.

Description

technical field [0001] The invention relates to a measuring device, in particular to a measuring device for measuring hull motion in the field of ship seakeeping. Background technique [0002] The ship seakeeping tank model test needs to measure the coupled motion of the six degrees of freedom of the ship's marine structure in waves, including roll, pitch, yaw, heave, surge and sway, and the resistance in waves. If only four degrees of freedom are considered when head sea, trailing sea and transverse sea are considered, the other two degrees of freedom can be limited and the restraint mode test can be used. However, when the marine structure of the ship sails in oblique waves, the six-degree-of-freedom coupling motion produced under the action of waves is more obvious. If the restraint model test is used, the results must be different from the actual situation. However, for some complex hydrodynamic problems, the restraint mode and semi-restraint mode tests are also irrepla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
Inventor 郭春雨赵晓东赵大刚周广利
Owner HARBIN ENG UNIV
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