Method for identifying plastic mechanical parameters of metal material by adopting spherical indentation morphology
A technology of metal materials and plastic mechanics, which is applied in the direction of testing material hardness, preparation of test samples, electrical digital data processing, etc., can solve the problem that iterative calculation does not converge, and it is difficult to use it to judge the uniqueness of identification results. The credible distribution interval of material properties and other problems to achieve the effect of avoiding the numerical iteration process, avoiding the simulation calculation process, and improving efficiency
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[0041] The present invention will be described in detail below with reference to the accompanying drawings and the specific embodiments of the 2099-T83 aluminum lithium alloy material, and the schematic embodiments of the present invention and the description of the invention are illustrative, but is not limited to the present invention. .
[0042] The present invention recognizes a method of identifying a plastic mechanical parameters of a metal material using a spherical indentation shape, including:
[0043] Step 1: The surface of the metal sample to be tested will be polished and the spherical indentation experiment is carried out. Spherical indentation experiments are performed under the Bell's hardness meter, and the load mode is the load control mode.
[0044] Step 2: After the press is unloaded, the contour shape of the spherical indentation will remain in the surface of the test piece, and the laser co-focus microplate will be used to obtain a residual surface indentation...
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