Strength testing fixture using uniaxial testing machine for variable-proportion biaxial loading
A uniaxial test and fixture technology, applied in the direction of strength characteristics, measuring devices, instruments, etc., can solve the problems of lack of equipment and high test costs, and achieve the effect of saving costs and simplifying the test device.
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[0044] combine figure 1 with figure 2 Describe the specific use and realization principle of the present invention.
[0045] according to figure 1 with figure 2 Install the fixture and clamp the four ends of the test piece so that the test piece is in the center of the base, and the upper and lower chucks (1 and 17) are respectively connected to the uniaxial testing machine, and according to figure 1 Adjust the elastic nut 6 so that the primary lever and the secondary lever are balanced and in a horizontal position, and the steel wire rope 8 is in a tight state. Start the uniaxial testing machine and load it slowly. At this time, assume that the upward pulling force of the upper chuck on the testing machine is F, then it can be known from the principle of lever balance that the pulling force exerted by the primary connecting rod 3 on the fulcrums of the two secondary lever beams is equal. It is F / 2, and the force analysis of the secondary lever shows that the magnitude o...
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