Lath beam bending moment testing device capable of being adjusted along with length of test piece

Abstract

The invention belongs to the technical field of hull structural strength experiments, and particularly relates to a lath beam bending moment testing device capable of being adjusted along with the length of a test piece. A multi-layer deck structure of a ship body can be truly simulated, and the stress change of lath beams when the structure is subjected to plastic failure can be approximately obtained. The plurality of lath beams are used as test pieces to weaken the strength of the whole structure, and on the basis of meeting the size characteristic requirements of a model, the model can beensured to be easily subjected to plastic failure. The axial tension and pressure of a ship deck and a ship bottom plate are simulated and measured through using tension and pressure optical sensors between the two layers of clamping plates; and vertical pressure is measured through using a mechanical sensor of loading equipment, and the bending moment condition of a to-be-measured section position can be obtained through conversion.

Description

technical field [0001] The invention belongs to the technical field of hull structure strength experiments, and in particular relates to a slat beam bending moment test device which can be adjusted with the length of a test piece. Background technique [0002] From the perspective of ship safety, it is necessary to accurately grasp the ultimate strength behavior of the hull girder structure under the ultimate wave load, and predict the final collapse degree after the collapse according to the structural state of the hull girder and external loads. It is very necessary to evaluate the ultimate bearing capacity of the hull girder structure under the ultimate wave load in the test, but the environment should be simplified and reasonably simulated in combination with the environmental conditions of the laboratory. In the cross-section of the ship, the damage of the ship under the action of wave load is a process of coexistence of elastoplastic changes. After the hull girder stru...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the test model cannot truly simulate the stress when the test model is a lath beam structure, and can truly simulate the multi-layer deck structure of the hull. In the process of plastic failure of the structure, the process of hull deformation and collection can be simulated. A slat beam bending moment test device that can be adjusted with the length of the test piece for the stress of the deck and bottom plate

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