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CMCs integral turbine bladed disc performance prediction verification method

A turbine blisk and performance prediction technology, applied in the direction of measuring devices, strength characteristics, and the use of stable tension/pressure test material strength, etc., can solve problems such as cumbersome operation methods, and achieve the effect of convenient and fast strength

Pending Publication Date: 2022-03-29
无锡太晟新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The operation method of this patent is cumbersome, and a lot of data needs to be calculated. How to predict the strength of the turbine disk conveniently and quickly, and the accuracy meets the performance requirements at the same time has become an urgent problem for researchers in this field.

Method used

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  • CMCs integral turbine bladed disc performance prediction verification method
  • CMCs integral turbine bladed disc performance prediction verification method
  • CMCs integral turbine bladed disc performance prediction verification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] like Figure 1-4 As shown, the performance characterization and verification device steps of a non-destructive ceramic matrix composite turbine disk are as follows:

[0022] (1) First, cut out the furnace-mounted sample ring 2 on the integral turbine blisk, an annular sample with an inner diameter of 8 cm and an outer diameter of 10 cm. Then carry out the fracture performance test on the sheared turbine disk ring test piece with the furnace, insert the fixed disc 102 into the sample ring 2 with the furnace, and insert the pin 101 into the reserved hole to fix it; then test the sample ring 2 with the furnace A tensile test was carried out, and the ultimate fracture load strength F1=228.47MPa of the turbine disk after being destroyed along with the furnace ring was obtained.

[0023] (2) According to the hoop ultimate tensile load F1 obtained as a parameter, the ultimate fracture strength T1=297.75MPa of the ceramic matrix composite turbine disk is obtained by using fini...

Embodiment 2

[0026] like Figure 1-4 As shown, the performance characterization and verification device steps of a non-destructive ceramic matrix composite turbine disk are as follows:

[0027] (1) First take the furnace sample on the whole turbine blisk, and then cut off a ring-shaped sample with an inner diameter of 10cm and an outer diameter of 12cm outside the turbine disk. Then, the fracture performance test is carried out on the sheared turbine disk ring test piece with the furnace, the fixed disc 102 is embedded in the sample ring 2 with the furnace, and the pin 101 is inserted into the reserved hole to fix it. Then, a tensile test was carried out on the sample ring 2, and the ultimate fracture load strength F1=251.38MPa of the turbine disk after the furnace ring was broken was obtained.

[0028] (2) According to the hoop ultimate tensile load F1 obtained as a parameter, the ultimate fracture strength of the ceramic matrix composite turbine disk is obtained by using finite element ...

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Abstract

The invention relates to a CMCs integral turbine bladed disc performance prediction verification method, which comprises the following steps: step 1, shearing a furnace-following sample ring on an integral turbine disc, placing the furnace-following sample ring in a stretching device, carrying out a stretching experiment on the sample ring, and obtaining the ultimate fracture load strength F1 of the turbine disc after the furnace-following sample ring is damaged; 2, according to the obtained ultimate fracture load strength F1 as a parameter, finite element simulation analysis is adopted to obtain the fracture rotation speed value S1 and the maximum fracture stress T1 of the CMCs turbine disc under the ultimate fracture strength; and 3, an over-rotation experiment is conducted on the turbine disc, the maximum fracture rotation speed S2 of the turbine disc under the actual condition is obtained, the maximum fracture rotation speed S2 is compared with the simulation fracture rotation speed S1 in the step 2, the actual strength T2 of the turbine disc is calculated according to the formula T2 = S2 * T1 / S1, the difference between S1 and S2 is small, the predicted value of the turbine disc is T1, T1 and T2 are almost equal, and prediction verification of the static strength of the CMCs turbine disc is achieved.

Description

technical field [0001] The invention relates to a verification device, in particular to a method for predicting and verifying the performance of a CMCs integral turbine blisk. Background technique [0002] The working environment of aero-engines is carried out under complex loads of high temperature, high pressure, and high speed, which requires extremely high structural strength of the turbine disk inside the engine. Since the strength of the turbine disk cannot be directly tested, it is difficult to obtain the structure of the traditional turbine disk. actual strength, and the calculation steps are cumbersome. [0003] Patent "A Method for Designing the Strength and Reliability of Turbine Blisk Structure" Application Publication No. CN105447271A: By determining the geometric shape of the blisk, calculating the weight to obtain the deterministic load of the structure, and performing detailed three-dimensional stress / strain analysis, the deterministic design Criteria are us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0017
Inventor 刘小冲孔繁成李楠李昱
Owner 无锡太晟新材料科技有限公司