CN-121999888-A - Method and device for determining mechanical parameters of ceramic matrix composite

CN121999888ACN 121999888 ACN121999888 ACN 121999888ACN-121999888-A

Abstract

The application provides a mechanical parameter determining method and device of a ceramic matrix composite, wherein the method comprises the steps of obtaining a target genetic population of a target mechanical parameter of a target material test piece, wherein the target material test piece is a test piece prepared by utilizing the ceramic matrix composite, the target genetic population comprises a plurality of genetic individuals which respectively represent different candidate values of the target mechanical parameter, aiming at each genetic individual in the target genetic population, calculating a first resonance frequency corresponding to the target material test piece and the genetic individual based on the candidate values corresponding to the genetic individual by utilizing a modal analysis model of the target material test piece, determining a target value of the target mechanical parameter of the target material test piece based on target deviation between the first resonance frequency corresponding to each genetic individual and a second resonance frequency, and the second resonance frequency is obtained by conducting resonance test measurement on the target material test piece. The application can improve the determination accuracy of the mechanical parameters of the ceramic matrix composite.

Inventors

LIU YANG
GAO CHANGYUAN
Shu rui
WANG SHIHUAI
YANG RONGKUN
WU LIXIANG
XUE JIAXIANG
YAN JUN
ZHANG GUOLIANG
LIAO YEHONG

Assignees

中广核研究院有限公司
中国广核电力股份有限公司

Dates

Publication Date: 20260508
Application Date: 20251225

Claims (10)

1. A method for determining mechanical parameters of a ceramic matrix composite, comprising: S1, acquiring a target genetic population of a target mechanical parameter of a target material test piece, wherein the target material test piece is a test piece prepared by utilizing a ceramic matrix composite material, and the target genetic population comprises a plurality of genetic individuals, and each genetic individual respectively represents different candidate values of the target mechanical parameter; S2, calculating a first resonance frequency of the target material test piece corresponding to the genetic individual according to candidate values of the genetic individual by using a modal analysis model of the target material test piece aiming at each genetic individual in the target genetic population; And step S3, determining target values of target mechanical parameters of the target material test piece based on target deviations between the first resonant frequency and the second resonant frequency corresponding to each genetic individual, wherein the second resonant frequency is obtained by carrying out resonance test measurement on the target material test piece.
2. The method of claim 1, wherein determining the target value of the target mechanical parameter of the target material specimen based on the target deviation between the respective first and second resonant frequencies for each of the genetic individuals comprises: And determining a candidate value corresponding to a first genetic individual as a target value of the target mechanical parameter in response to the target deviation corresponding to the first genetic individual being within a preset deviation range, wherein the first genetic individual is any genetic individual in the target genetic population.
3. The method of claim 1, wherein the target genetic population is an i-th generation genetic population; the determining the target value of the target mechanical parameter of the target material test piece based on the target deviation between the first resonant frequency and the second resonant frequency corresponding to each genetic individual comprises the following steps: responding to the target deviation corresponding to each genetic individual exceeding a preset deviation range, selecting a plurality of genetic individuals from the ith generation genetic population to serve as father genetic individuals corresponding to the (i+1) th generation genetic population; generating a plurality of offspring genetic individuals based on the plurality of parent genetic individuals to obtain an i+1th generation genetic population, wherein the i+1th generation genetic population comprises the plurality of offspring genetic individuals; Updating i to i+1, and returning to execute the step S2 until the target deviation corresponding to a second genetic individual is within a preset deviation range, determining a candidate value corresponding to the second genetic individual as a target value of the target mechanical parameter, wherein the second genetic individual is any genetic individual in the i+n generation genetic population, and n is a positive integer.
4. The method of claim 3, wherein selecting a plurality of genetic individuals from the i-th generation genetic population as parent genetic individuals for the i+1-th generation genetic population comprises: Sorting the genetic individuals in the ith generation genetic population based on the target bias respectively corresponding to each genetic individual in the ith generation genetic population; and taking the genetic individuals with the ranking values within a preset ranking range in the ith generation genetic population as the father genetic individuals.
5. The method of claim 3, wherein said generating a plurality of offspring genetic individuals based on a plurality of said parent genetic individuals comprises: Determining the selection probability of each parent genetic individual based on the target deviation corresponding to each parent genetic individual; selecting at least part of the father genetic individuals to pair in pairs based on the selection probability of each father genetic individual to obtain a plurality of pairs of father genetic individuals; Generating said offspring genetic individuals based on said pairs of parent genetic individuals for each set of said pairs of parent genetic individuals.
6. The method of claim 3, wherein said generating a plurality of offspring genetic individuals based on a plurality of said parent genetic individuals comprises: Determining a target regulation parameter based on the target deviations respectively corresponding to the parent genetic individuals; And adjusting candidate values corresponding to at least part of the parent genetic individuals based on the target adjustment parameters to obtain at least part of the offspring genetic individuals.
7. The method of claim 6, wherein the target adjustment parameters include adjustment amplitude and adjustment ratio; Adjusting candidate values corresponding to at least part of the parent genetic individuals based on the target adjustment parameters to obtain at least part of the offspring genetic individuals, wherein the method comprises the following steps: determining an adjustment amplitude coefficient based on the adjustment proportion and the minimum deviation among the target deviations respectively corresponding to the plurality of father genetic individuals; And adjusting candidate values corresponding to the parent genetic individuals of the target number based on the adjustment amplitude and the adjustment amplitude coefficient to obtain the offspring genetic individuals of the target number, wherein the target number is determined based on the product of the adjustment proportion and the total number of the parent genetic individuals.
8. The method of claim 1, wherein the number of second resonant frequencies is a plurality; for each genetic individual, the number of the first resonance frequencies corresponding to the genetic individual is a plurality; before the target value of the target mechanical parameter of the target material test piece is determined based on the target deviation between the first resonant frequency and the second resonant frequency corresponding to each genetic individual, the method further comprises: For each of the genetic individuals, determining the target deviation for the genetic individual by performing the steps of: Determining, for each of the second resonant frequencies corresponding to the genetic individual, a first deviation between the second resonant frequency and each of the first resonant frequencies corresponding to the genetic individual, respectively, and determining, based on a ratio of a minimum deviation of the first deviations corresponding to each of the first resonant frequencies relative to the second resonant frequency, a second deviation of the genetic individual corresponding to the second resonant frequency; and determining the target deviation corresponding to the genetic individual based on the second deviations respectively corresponding to the genetic individual and each second resonance frequency.
9. The method of claim 8, wherein the determining the target bias for the genetic individual based on the second bias for the genetic individual corresponding to each of the second resonant frequencies, respectively, comprises: determining a third deviation corresponding to the genetic individual based on a sum of squares of the second deviations of the genetic individual and each of the second resonance frequencies, respectively; Determining the target deviation for the genetic individual based on a ratio of the third deviation to a total number of the second resonance frequencies.
10. The device for determining the mechanical parameters of the ceramic matrix composite material is characterized by comprising an acquisition module, a calculation module and a determination module; The acquisition module is used for acquiring a target genetic population of a target mechanical parameter of a target material test piece, wherein the target material test piece is a test piece prepared by utilizing a ceramic matrix composite material, and the target genetic population comprises a plurality of genetic individuals, and each genetic individual respectively represents different candidate values of the target mechanical parameter; The calculation module is used for calculating a first resonance frequency corresponding to the target material test piece and the genetic individuals based on candidate values corresponding to the genetic individuals by using a modal analysis model of the target material test piece for each genetic individual in the target genetic population; The determining module is used for determining a target value of a target mechanical parameter of the target material test piece based on target deviation between a first resonant frequency corresponding to each genetic individual and a second resonant frequency, and the second resonant frequency is obtained by carrying out resonance test measurement on the target material test piece.

Description

Method and device for determining mechanical parameters of ceramic matrix composite Technical Field The application relates to the technical field of material mechanics, in particular to a method and a device for determining mechanical parameters of a ceramic matrix composite. Background The reactor core cladding pipe is a first-pass safety barrier for preventing radioactive substances from leaking, and the deformation behavior of inward collapse or outward bulge directly influences the safety of the operation of the reactor under the complex service environment of coolant external pressure and fission gas internal pressure coupling. Therefore, the accurate measurement of the core mechanical parameters of the cladding pipe is a key precondition for the performance evaluation and research and development of the cladding pipe. However, at present, a universal testing machine is generally adopted to carry out mechanical testing on the cladding pipe, the toughness requirement of the testing mode on the cladding pipe is higher, and the accuracy of determining the core mechanical parameters of the ceramic-based composite cladding pipe is poor because a clamping tool is difficult to adapt and is extremely easy to cause sample damage. Disclosure of Invention The embodiment of the application mainly aims to provide a method and a device for determining mechanical parameters of a ceramic matrix composite material, aiming at improving the determination accuracy of the mechanical parameters of the ceramic matrix composite material. The application provides a mechanical parameter determination method of a ceramic matrix composite, which comprises the steps of S1, obtaining a target genetic population of a target mechanical parameter of a target material test piece, wherein the target material test piece is a test piece prepared by utilizing a ceramic matrix composite, the target genetic population comprises a plurality of genetic individuals, each genetic individual characterizes different candidate values of the target mechanical parameter, S2, aiming at each genetic individual in the target genetic population, calculating a first resonant frequency corresponding to the target material test piece and the genetic individual based on the candidate values corresponding to the genetic individual by utilizing a modal analysis model of the target material test piece, S3, determining a target value of the target mechanical parameter of the target material test piece based on target deviation between the first resonant frequency corresponding to each genetic individual and a second resonant frequency, and the second resonant frequency is obtained by conducting resonance test measurement on the target material test piece. In one embodiment, the determining the target value of the target mechanical parameter of the target material test piece based on the target deviation between the first resonant frequency and the second resonant frequency corresponding to each genetic individual includes determining the candidate value corresponding to the first genetic individual as the target value of the target mechanical parameter in response to the target deviation corresponding to the first genetic individual being any genetic individual in the target genetic population within a preset deviation range. In one embodiment, the target genetic population is an ith generation genetic population, i is a positive integer, the target value of the target mechanical parameter of the target material test piece is determined based on target deviation between first resonant frequencies corresponding to the genetic individuals and second resonant frequencies respectively, the target value comprises the steps of selecting a plurality of genetic individuals from the ith generation genetic population as father generation genetic individuals corresponding to the (i+1) th generation genetic population in response to the target deviation corresponding to the genetic individuals exceeding a preset deviation range, generating a plurality of child genetic individuals based on the plurality of father generation genetic individuals to obtain the (i+1) th generation genetic population, the (i+1) th generation genetic population comprises the plurality of child genetic individuals, updating i to i+1, and returning to execute the step S2 until the target deviation corresponding to the second genetic individuals is within the preset deviation range, determining candidate values corresponding to the second genetic individuals as the target value of the target mechanical parameter, the second genetic individuals are any one of the (i+n) th generation genetic population, and n is a positive integer. In one embodiment, the selecting a plurality of genetic individuals from the ith generation genetic population as father genetic individuals corresponding to the (i+1) th generation genetic population comprises sorting the genetic individuals in the ith generation genetic p