Method for designing crack propagation characteristic simulator of centrifugal impeller central hole
A technology of centrifugal impeller and crack growth, which is applied in computer-aided design, design optimization/simulation, calculation, etc., and can solve problems such as inability to carry out fatigue crack growth tests
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[0029] Embodiment 1, the present invention realizes steps as follows:
[0030] The first step is to obtain the geometric model of the centrifugal impeller, and measure the diameter and thickness of the central hole structure of the centrifugal impeller. The geometric model refers to the three-dimensional geometric model of the centrifugal impeller designed according to actual engineering requirements by means of computer-aided design software; the aperture refers to the diameter of the penetrating circular hole at the center of the centrifugal impeller; the thickness refers to the diameter of the circular hole in the center of the centrifugal impeller. radial thickness. For example, the diameter of the central hole structure of a certain centrifugal impeller is 54mm and the thickness is 48mm.
[0031] The second step is to obtain the working conditions of the centrifugal impeller and the material performance parameters under the working conditions. The operating conditions i...
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