Method for predicting stress of thermal barrier coatings of turbine blade
A technology of thermal barrier coatings and turbine blades, applied in the direction of measuring force, measuring devices, special data processing applications, etc., can solve the problems of manpower and time consumption, cumbersome and complicated processing, etc., to improve work efficiency, clear thinking, readable effect
Active Publication Date: 2011-07-20
XIANGTAN UNIV
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is to provide a method for predicting the stress of the thermal barrier coating of a turbine blade, in order to solve the problems of the pre-treatment when using ABAQUS / CAE to carry out a large number of thermal cycles (N>100) of the thermal barrier coating system of the turbine blade The work is cumbersome and complicated, and the problem of excessive consumption of manpower and time
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.
[0034] The two-dimensional cross-sectional model of the turbine blade thermal barrier coating system is selected as the implementation object, and its finite element simulation is carried out under the action of a set number of thermal cycles (this embodiment is set to 500 thermal cycles), and the stress field is obtained. distribution, finally predicting the distribution of dangerous areas within the ceramic layer.
[0035] figure 1 It is the flow chart of the method for predicting the stress of the thermal barrier coating of the turbine blade provided by the present invention, figure 1 Among them, the present invention comprises the following steps:
[0036] Step 101: Establish a finite element analysis model.
...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for predicting the stress of thermal barrier coatings of a turbine blade in the technical field of reliability predication for thermal-insulation protective coatings of aero-engines. The method comprises the following steps of: processing an inp file of a thermal cycle analysis step generated, and removing separators in the inp file of the thermal cycle analysis step; modifying annotation names and names of the thermal cycle analysis step with the set number of times; generating magnitude curve data required by the set cycle; overwriting the set magnitude curve data with relevant data in the inp file of the thermal cycle analysis step; modifying and saving relevant parameters and an inp filename; submitting the modified inp file for analysis to acquire thedistribution of the stress fields in the thermal barrier coatings of the turbine blade; and predicting the danger area in the thermal barrier coatings of the turbine blade through the comparative analysis of the stress fields. The method solves the problems of complicated processing and excessive labor and time consumptions during the large thermal cycle for a thermal barrier coating system of the turbine blade.
Description
technical field [0001] The invention belongs to the technical field of reliability prediction of an aero-engine heat-insulating protective coating system, and in particular relates to a method for predicting the stress of a thermal barrier coating of a turbine blade. Background technique [0002] Thermal barrier coatings (TBCs for short) are ceramic materials that have the characteristics of high melting point, low thermal conductivity, low vapor pressure, low emissivity and high reflectivity. The surface of the hot-end parts (especially the turbine blades) is used to reduce the working temperature of the high-temperature parts and protect them from high-temperature corrosion and high-temperature oxidation, thereby achieving the purpose of prolonging the service life of high-temperature parts and meeting the requirements of high-temperature alloys in modern aviation gas turbine engines. The requirement for components to operate in service environments at temperatures above t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/00G06F17/50
Inventor 周益春刘奇星毛卫国
Owner XIANGTAN UNIV