Pressurizing device turbine blade vibration reliability index evaluation method
A turbine blade and reliability technology, which is applied in the field of turbocharger turbine blade vibration reliability index evaluation, can solve problems such as difficult turbine structure design, inability to determine the variation law of reliability reliability index, and inability to reflect comprehensively and objectively
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[0024] A kind of supercharger turbine blade vibration reliability index evaluation method, it comprises the following steps:
[0025] a. According to the design parameters of the turbocharger turbine, determine the first-order natural frequency of the turbine blade vibration c 1 The characteristic parameters of the probability distribution (that is, the probability density function f c1 (c 1 ) and cumulative distribution function F c1 (c 1 )), you can use the following two methods, respectively:
[0026] The first one: using the performance parameters of the turbine blade material and its dispersion characteristics, the structural size parameters and their dispersion characteristics, etc., using the probabilistic finite element analysis method to determine the first-order natural frequency c of the turbine blade vibration 1 The characteristic parameters of the probability distribution;
[0027] The second method: select a turbine sample with a certain sample size, test th...
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