Material mechanical property testing method under three-dimensional stress state
A technology of material mechanics and testing methods, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problem of sheet forming performance that ordinary liquids are not easy to seal, and achieve the effect of increasing yield strength, increasing elongation, and fewer processes
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specific Embodiment approach 1
[0016] Specific implementation mode one: the following combination figure 1 , figure 2 , image 3 , Figure 5 , Figure 6 and Figure 7 Specifically illustrate the present embodiment, the method for testing the mechanical properties of materials under the three-dimensional stress state includes the following steps: one, manufacturing the left mold cavity 9 and the right mold cavity 2 of the combined mold cavity; two, processing the plate sample 1 Place and fix in the middle of the left mold cavity 9 and the right mold cavity 2; 3. Fix the upper and lower ends of the plate sample 1 on the fixture of the material mechanical performance testing machine respectively; 4. Mix a certain proportion of magnetic particles 6 and base liquid 7 And fully stirred to make a magnetic medium (magnetorheological fluid); five, inject the magnetic medium into the gap between the plate sample 1 and the left mold cavity 9 and the right mold cavity 2; six, pass the hydraulic control system 5 th...
specific Embodiment approach 2
[0018] Specific implementation mode two: the following combination figure 1 , figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This embodiment will be specifically described. The difference between this embodiment and the first embodiment is that the plate sample 1 is rectangular, and the other components and connections are the same as those of the first embodiment.
specific Embodiment approach 3
[0019] Specific implementation mode three: the following combination figure 1 , figure 2Specifically explaining this embodiment, the test device includes a right mold cavity 2, an S pole 3, a high pressure oil pipe 4, a hydraulic control system 5, magnetic particles 6, a base liquid 7, an N pole 8, a left mold cavity 9 and a magnetic control unit 10 , the left mold cavity 9 and the right mold cavity 2 are combined and circumferentially fixed to form a combined mold cavity, and the magnetic medium composed of magnetic particles 6 and base liquid 7 fills the gap in the middle of the combined mold cavity, and the oil on the combined mold cavity The hole communicates with the hydraulic control system 5 through the high-pressure oil pipe 4; the hydraulic control system 5 pressurizes the cavity formed by the left mold cavity 9 and the right mold cavity 2 through the high-pressure oil pipe 4; the N pole 8 and the S pole 3 are arranged oppositely and respectively Be fixed on the out...
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