# US 2025/0165660 A1 · Collaborative design system and method for thermophysical property gradient distribution and braided structure of ceramic matrix composite (cmc) and storage medium

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2025/0165660 A1
- Document ID: US20250165660A1
- Status: Published application
- Kind: A1
- Application number: 18/950,011
- Filed: 2024-11-16
- Published: 2025-05-22
- Earliest claimed: 2023-11-16
- Assignees: Nanjing University of Aeronautics and Astronautics
- Applicants: Nanjing University of Aeronautics and Astronautics
- Inventors: Junkui MAO; Zecan TU; Yanchao CHU; Mingdong ZHAO; Zihao BAO; Zhixuan REN
- Web page: https://patentgrep.com/patent/US20250165660A1

## CPC

- G06F 30/15: Vehicle, aircraft or watercraft design
- G06F 30/17: Mechanical parametric or variational design
- G06F 30/20: Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30)
- G06F 30/23: using finite element methods [FEM] or finite difference methods [FDM]
- G06F 2111/10: Numerical modelling
- G06F 2113/26: Composites
- G06F 2119/08: Thermal analysis or thermal optimisation
- Y02T 90/00: Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

Disclosed is a collaborative design system and method for a thermophysical property gradient distribution and a braided structure of a CMC and a storage medium. The system comprises at least one storage medium and at least one processor. The at least one processor is configured to: generate a temperature field parameter of a surface of a CMC turbine blade under a non-uniform inflow condition based on a simulation analysis platform, and extract a convective heat transfer coefficient; partition the CMC turbine blade and import an extracted fluid-solid heat transfer boundary condition into an optimization platform; perform multi-objective optimization on the thermophysical property gradient distribution of the CMC turbine blade under the non-uniform inflow condition based on an optimization simulation tool; and generate C nanotube contents of different regions of the CMC turbine blade based on a correspondence function and values of material thermal conductivities of the different regions of the CMC turbine blade to realize the collaborative design of the thermophysical property gradient distribution and the braided structure of the CMC.

## Claims

### Claim 1

A collaborative design system for a thermophysical property gradient distribution and a braided structure of a ceramic matrix composite (CMC), comprising:
at least one storage medium including a set of instructions for storing a collaborative design of the thermophysical property gradient distribution and the braided structure of the CMC; and
at least one processor in communication with the at least one storage medium, wherein when executing the set of instructions, the at least one processor is configured to direct the system to perform operations including:
generating a temperature field parameter of a surface of a CMC turbine blade under a non-uniform inflow condition based on a simulation analysis platform, and extracting a convective heat transfer coefficient;
partitioning the CMC turbine blade and importing an extracted fluid-solid heat transfer boundary condition into an optimization platform;
performing multi-objective optimization on the thermophysical property gradient distribution of the CMC turbine blade under the non-uniform inflow condition based on an optimization simulation tool; and
generating C nanotube contents in different regions of the CMC turbine blade, based on a correspondence function and values of material thermal conductivities of the different regions of the CMC turbine blade, to realize the collaborative design between the thermophysical property gradient distribution and the braided structure of the CMC.

### Claim 2 (depends on 1)

The collaborative design system of claim 1, wherein the at least one processor is further configured to:
obtain a material thermal conductivity of each of a plurality of experimental pieces in each direction, a C nanotube content of each of the plurality of experimental pieces being different, the material thermal conductivity being determined based on an experimental test approach; and
establish the correspondence function between the material thermal conductivity and the C nanotube content.

### Claim 3 (depends on 1)

The collaborative design system of claim 1, wherein:
the non-uniform inflow condition is given in the form of a hot spot at a turbine gas inlet, and a material setting of the CMC turbine blade is set in a customized manner.

### Claim 4 (depends on 1)

The collaborative design system of claim 1, wherein the at least one processor is configured to:
partition the CMC turbine blade based on UV lines on the surface of the CMC turbine blade, save a material thermal conductivity of each region, and import the temperature field parameter of the surface of the CMC turbine blade generated by the simulation analysis platform and the convective heat transfer coefficient into the optimization platform as input parameters using an interpolation method.

### Claim 5 (depends on 4)

The collaborative design system of claim 4, wherein:
the multi-objective optimization is a non-dominated sorting genetic algorithm NSGA-II, an optimization objective is a maximum temperature of the surface of the CMC turbine blade and a maximum temperature gradient of the CMC turbine blade, and an optimization parameter is the material thermal conductivity of each region.

### Claim 6 (depends on 2)

The collaborative design system of claim 2, wherein:
in the correspondence function, the C nanotube content includes at least one of 0%, 3.75%, 7.5%, 11.25%, and 15%, and the plurality of experimental pieces are 2.5D CMC pieces.

### Claim 7

A collaborative design method for a thermophysical property gradient distribution and a braided structure of a ceramic matrix composite (CMC), implemented by at least one processor, comprising:
generating a temperature field parameter of a surface of a CMC turbine blade under a non-uniform inflow condition based on a simulation analysis platform, and extracting a convective heat transfer coefficient;
partitioning the CMC turbine blade and importing an extracted fluid-solid heat transfer boundary condition into an optimization platform;
performing multi-objective optimization on the thermophysical property gradient distribution of the CMC turbine blade under the non-uniform inflow condition based on an optimization simulation tool; and
generating C nanotube contents of different regions of the CMC turbine blade based on a correspondence function and values of material thermal conductivities of the different regions of the CMC turbine blade to realize the collaborative design of the thermophysical property gradient distribution and the braided structure of the CMC.

### Claim 8 (depends on 7)

The collaborative design method of claim 7, wherein determining the correspondence function includes:
obtaining a material thermal conductivity of each of a plurality of experimental pieces in each direction, a C nanotube content of each of the plurality of experimental pieces being different, the material thermal conductivity being determined based on an experimental test approach; and
establishing the correspondence function between the material thermal conductivity and the C nanotube content.

### Claim 9 (depends on 7)

The collaborative design method of claim 7, wherein:
the non-uniform inflow condition is given in the form of a hot spot at a turbine gas inlet, and a material setting of the CMC turbine blade is set in a customized manner.

### Claim 10 (depends on 7)

The collaborative design method of claim 7, wherein the partitioning the CMC turbine blade and importing an extracted fluid-solid heat transfer boundary condition into an optimization platform includes:
partitioning the CMC turbine blade based on UV lines on the surface of the CMC turbine blade, saving a material thermal conductivity of each region, and importing the temperature field parameter of the surface of the CMC turbine blade generated by the simulation analysis platform and the convective heat transfer coefficient into the optimization platform as input parameters using an interpolation method.

### Claim 11 (depends on 10)

The collaborative design method of claim 10, wherein:
the multi-objective optimization is a non-dominated sorting genetic algorithm NSGA-II, an optimization objective is a maximum temperature of the surface of the CMC turbine blade and a maximum temperature gradient of the CMC turbine blade, and an optimization parameter is the material thermal conductivity of each region.

### Claim 12 (depends on 8)

The collaborative design method of claim 8, wherein:
in the correspondence function, the C nanotube content includes at least one of 0%, 3.75%, 7.5%, 11.25%, and 15%, and the plurality of experimental pieces are 2.5D CMC pieces.

### Claim 13

A non-transitory computer readable medium, comprising computer instructions that, when executed by at least one processor, direct the at least one processor to perform a method comprising:
generating a temperature field parameter of a surface of a CMC turbine blade under a non-uniform inflow condition based on a simulation analysis platform, and extracting a convective heat transfer coefficient;
partitioning the CMC turbine blade and importing an extracted fluid-solid heat transfer boundary condition into an optimization platform;
performing multi-objective optimization on the thermophysical property gradient distribution of the CMC turbine blade under the non-uniform inflow condition based on an optimization simulation tool; and
generating C nanotube contents of different regions of the CMC turbine blade based on a correspondence function and values of material thermal conductivities of the different regions of the CMC turbine blade to realize the collaborative design of the thermophysical property gradient distribution and the braided structure of the CMC.