A slat beam bending moment test device that can be adjusted with the length of the test piece
A technology of length adjustment and slats, which is used in measuring devices and uses a stable bending force to test the strength and strength characteristics of materials, which can solve the problem of not being able to simulate the force actually
Active Publication Date: 2022-08-02
HARBIN ENG UNIV
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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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Embodiment 1
[0018] A slat beam bending moment test device that can be adjusted with the length of the test piece, including a slat beam 1, a splint 2, a mechanical sensor 3, an extension beam 4, a slider 5, a sliding track 6, an action rod 7, a loading head 8, The action cylinder 9 and the force transmission block 10 are composed of a test piece module, a connection clamping module and a pressure loading module. The multi-layer test slat beam 1 is arranged in the middle of the device, and the two ends are fixed by the splint 2. The components of the connection and clamping module are a splint 2, a sensor 3, and an extension beam 4. The splint is a double-layer splint, and two upper and lower sensors 3 are arranged between one side of the splint to connect, and the other side of the splint is fixed with bolts at the symmetrical position. Both ends of the plywood are welded with extension beams 4. The components of the pressure loading module are the slider 5 , the sliding track 6 , the ac...
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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. The invention can truly simulate the multi-layer deck structure of the ship hull, and at the same time, the force change of the slat beams when the structure is plastically damaged can be approximated. The present invention can weaken the strength of the entire structure by using several slat beams as test pieces, and on the basis of satisfying the dimensional characteristic requirements of the model, it is ensured that the model can be easily plastically damaged. The invention simulates the measurement of the axial tensile pressure of the deck and the bottom of the ship through the tension and pressure sensor between the two layers of plywood; the vertical pressure is measured by the mechanical sensor provided by the loading device, and the bending moment at the position of the section to be measured can be obtained by conversion. Happening.
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 that can be adjusted with the length of a test piece. Background technique [0002] From the safety point of view of the ship, it is necessary to accurately grasp the ultimate strength behavior of the hull girder structure when subjected to the ultimate wave load, and predict the final collapse degree after the collapse according to the structural state of the hull girder and the external load. 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. On the transverse section of the ship, the damage of the ship under the action of wave load is a process of coexistence of elastic-plastic changes....
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IPC IPC(8): G01N3/20G01N3/02
CPCG01N3/20G01N3/02G01N2203/0023G01N2203/0264G01N2203/0676
Inventor 许维军王丙佳华真马赫李陈峰周学谦
Owner HARBIN ENG UNIV