Torsion calibration device and method for measurement beam used for ship model wave load test

Abstract

The invention provides a torsion calibration device for a measurement beam used for a ship model wave load test. The torsion calibration device for the measurement beam used for the ship model wave load test comprises a measurement beam. A beam surface of a measurement profile of the measurement beam is provided with a foil gage. One end of the measurement beam is fixed on a support, and the other end of the measurement beam is fixedly connected with a rod piece. The rod piece is vertical to the axis of the measurement beam. A tray is hung on one end of the rod piece through steel wire ropes, and weights can be placed on the tray. The distance between one end of the rod piece and a hanging end is equal to the distance between the other end of the rod piece and the hanging end. The torsion calibration device for the measurement beam used for the ship model wave load test provides a torsion calibration method for a measurement beam used for a ship model wave load test. According to the torsion calibration method for the measurement beam used for the ship model wave load test, by independently conducting gradation loading and weight unloading on two ends of the rod piece, the strain of each measurement profile is collected, fitting coefficients of the weight acting force and the strain are obtained, and a coefficient factor of the strain of each measurement profile of the measurement beam and a torsion in the wave load which is actually suffered by each measurement profile of the ship model is counted. The coefficient factor between the strain of each measurement profile of the measurement beam and a torsion in the sea load which is actually suffered by each measurement profile of the ship model can be demarcated through the torsion calibration device and the method for the measurement beam used for the ship model wave load test.

Description

technical field [0001] The invention relates to the technical field of wave load testing of segmented ship models, in particular to a device and a method for calibrating the relationship between the strain of each measurement section on a measurement beam and the wave load suffered by each measurement section of the ship model, and in particular to A device and method for calibrating the relationship between the strain of each measurement section of the measurement beam and the torque actually suffered by each measurement section of the ship model. Background technique [0002] The wave load test system is mainly used to measure wave shear force, bending moment, torque and slamming pressure, involving both the structural design of the ship model itself and the design of the test system. The structural design of the ship model used for testing at this stage mainly includes continuous ship models. , segmented ship model and integral elastic ship model, and among them, the desi...

AI Technical Summary

Problems solved by technology

The above test method is based on the fact that there is a certain correspondence between the strain measured on the metal beam and the actual wave load on each measurement section of the ship model. Determine the corresponding relationship coefficient between the strain of each measurement section and the actual wave load on each measurement section of the ship model, and there is still a lot of room for research on the devices and methods currently used to determine the corresponding relationship coefficient

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