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Brake Disk

The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform

You Dong Ding – 1st expert on this subject based on the ideXlab platform

  • Thermal analysis for Brake Disks of SiC/6061 Al alloy co-continuous composite for CRH3 during emergency braking considering airflow cooling
    Transactions of Nonferrous Metals Society of China, 2012
    Co-Authors: Lan Jiang, Yan Li Jiang, Liang Yu, Nan Su, You Dong Ding

    Abstract:

    The mass of high-speed trains can be reduced using the Brake Disk prepared with SiC network ceramic frame reinforced 6061 aluminum alloy composite (SiCn/Al). The thermal and stress analyses of SiCn/Al Brake Disk during emergency braking at a speed of 300 km/h considering airflow cooling were investigated using finite element (FE) and computational fluid dynamics (CFD) methods. All three modes of heat transfer (conduction, convection and radiation) were analyzed along with the design features of the Brake assembly and their interfaces. The results suggested that the higher convection coefficients achieved with airflow cooling will not only reduce the maximum temperature in the braking but also reduce the thermal gradients, since heat will be removed faster from hotter parts of the Disk. Airflow cooling should be effective to reduce the risk of hot spot formation and disc thermal distortion. The highest temperature after emergency braking was 461 °C and 359 °C without and with considering airflow cooling, respectively. The equivalent stress could reach 269 MPa and 164 MPa without and with considering airflow cooling, respectively. However, the maximum surface stress may exceed the material yield strength during an emergency braking, which may cause a plastic damage accumulation in a Brake Disk without cooling. The simulation results are consistent with the experimental results well.

  • Thermal analysis for Brake Disks of SiC/6061 Al alloy co-continuous composite for CRH3 during emergency braking considering airflow cooling
    Transactions of Nonferrous Metals Society of China (English Edition), 2012
    Co-Authors: Lan Jiang, Yan Li Jiang, Liang Yu, Nan Su, You Dong Ding

    Abstract:

    The mass of high-speed trains can be reduced using the Brake Disk prepared with SiC network ceramic frame reinforced 6061 aluminum alloy composite (SiCn/Al). The thermal and stress analyses of SiCn/Al Brake Disk during emergency braking at a speed of 300 km/h considering airflow cooling were investigated using finite element (FE) and computational fluid dynamics (CFD) methods. All three modes of heat transfer (conduction, convection and radiation) were analyzed along with the design features of the Brake assembly and their interfaces. The results suggested that the higher convection coefficients achieved with airflow cooling will not only reduce the maximum temperature in the braking but also reduce the thermal gradients, since heat will be removed faster from hotter parts of the Disk. Airflow cooling should be effective to reduce the risk of hot spot formation and disc thermal distortion. The highest temperature after emergency braking was 461°C and 359°C without and with considering airflow cooling, respectively. The equivalent stress could reach 269 MPa and 164 MPa without and with considering airflow cooling, respectively. However, the maximum surface stress may exceed the material yield strength during an emergency braking, which may cause a plastic damage accumulation in a Brake Disk without cooling. The simulation results are consistent with the experimental results well. © 2012 The Nonferrous Metals Society of China.

Lan Jiang – 2nd expert on this subject based on the ideXlab platform

  • Thermal analysis for Brake Disks of SiC/6061 Al alloy co-continuous composite for CRH3 during emergency braking considering airflow cooling
    Transactions of Nonferrous Metals Society of China, 2012
    Co-Authors: Lan Jiang, Yan Li Jiang, Liang Yu, Nan Su, You Dong Ding

    Abstract:

    The mass of high-speed trains can be reduced using the Brake Disk prepared with SiC network ceramic frame reinforced 6061 aluminum alloy composite (SiCn/Al). The thermal and stress analyses of SiCn/Al Brake Disk during emergency braking at a speed of 300 km/h considering airflow cooling were investigated using finite element (FE) and computational fluid dynamics (CFD) methods. All three modes of heat transfer (conduction, convection and radiation) were analyzed along with the design features of the Brake assembly and their interfaces. The results suggested that the higher convection coefficients achieved with airflow cooling will not only reduce the maximum temperature in the braking but also reduce the thermal gradients, since heat will be removed faster from hotter parts of the Disk. Airflow cooling should be effective to reduce the risk of hot spot formation and disc thermal distortion. The highest temperature after emergency braking was 461 °C and 359 °C without and with considering airflow cooling, respectively. The equivalent stress could reach 269 MPa and 164 MPa without and with considering airflow cooling, respectively. However, the maximum surface stress may exceed the material yield strength during an emergency braking, which may cause a plastic damage accumulation in a Brake Disk without cooling. The simulation results are consistent with the experimental results well.

  • Thermal analysis for Brake Disks of SiC/6061 Al alloy co-continuous composite for CRH3 during emergency braking considering airflow cooling
    Transactions of Nonferrous Metals Society of China (English Edition), 2012
    Co-Authors: Lan Jiang, Yan Li Jiang, Liang Yu, Nan Su, You Dong Ding

    Abstract:

    The mass of high-speed trains can be reduced using the Brake Disk prepared with SiC network ceramic frame reinforced 6061 aluminum alloy composite (SiCn/Al). The thermal and stress analyses of SiCn/Al Brake Disk during emergency braking at a speed of 300 km/h considering airflow cooling were investigated using finite element (FE) and computational fluid dynamics (CFD) methods. All three modes of heat transfer (conduction, convection and radiation) were analyzed along with the design features of the Brake assembly and their interfaces. The results suggested that the higher convection coefficients achieved with airflow cooling will not only reduce the maximum temperature in the braking but also reduce the thermal gradients, since heat will be removed faster from hotter parts of the Disk. Airflow cooling should be effective to reduce the risk of hot spot formation and disc thermal distortion. The highest temperature after emergency braking was 461°C and 359°C without and with considering airflow cooling, respectively. The equivalent stress could reach 269 MPa and 164 MPa without and with considering airflow cooling, respectively. However, the maximum surface stress may exceed the material yield strength during an emergency braking, which may cause a plastic damage accumulation in a Brake Disk without cooling. The simulation results are consistent with the experimental results well. © 2012 The Nonferrous Metals Society of China.

Yan Li Jiang – 3rd expert on this subject based on the ideXlab platform

  • Thermal analysis for Brake Disks of SiC/6061 Al alloy co-continuous composite for CRH3 during emergency braking considering airflow cooling
    Transactions of Nonferrous Metals Society of China, 2012
    Co-Authors: Lan Jiang, Yan Li Jiang, Liang Yu, Nan Su, You Dong Ding

    Abstract:

    The mass of high-speed trains can be reduced using the Brake Disk prepared with SiC network ceramic frame reinforced 6061 aluminum alloy composite (SiCn/Al). The thermal and stress analyses of SiCn/Al Brake Disk during emergency braking at a speed of 300 km/h considering airflow cooling were investigated using finite element (FE) and computational fluid dynamics (CFD) methods. All three modes of heat transfer (conduction, convection and radiation) were analyzed along with the design features of the Brake assembly and their interfaces. The results suggested that the higher convection coefficients achieved with airflow cooling will not only reduce the maximum temperature in the braking but also reduce the thermal gradients, since heat will be removed faster from hotter parts of the Disk. Airflow cooling should be effective to reduce the risk of hot spot formation and disc thermal distortion. The highest temperature after emergency braking was 461 °C and 359 °C without and with considering airflow cooling, respectively. The equivalent stress could reach 269 MPa and 164 MPa without and with considering airflow cooling, respectively. However, the maximum surface stress may exceed the material yield strength during an emergency braking, which may cause a plastic damage accumulation in a Brake Disk without cooling. The simulation results are consistent with the experimental results well.

  • Thermal analysis for Brake Disks of SiC/6061 Al alloy co-continuous composite for CRH3 during emergency braking considering airflow cooling
    Transactions of Nonferrous Metals Society of China (English Edition), 2012
    Co-Authors: Lan Jiang, Yan Li Jiang, Liang Yu, Nan Su, You Dong Ding

    Abstract:

    The mass of high-speed trains can be reduced using the Brake Disk prepared with SiC network ceramic frame reinforced 6061 aluminum alloy composite (SiCn/Al). The thermal and stress analyses of SiCn/Al Brake Disk during emergency braking at a speed of 300 km/h considering airflow cooling were investigated using finite element (FE) and computational fluid dynamics (CFD) methods. All three modes of heat transfer (conduction, convection and radiation) were analyzed along with the design features of the Brake assembly and their interfaces. The results suggested that the higher convection coefficients achieved with airflow cooling will not only reduce the maximum temperature in the braking but also reduce the thermal gradients, since heat will be removed faster from hotter parts of the Disk. Airflow cooling should be effective to reduce the risk of hot spot formation and disc thermal distortion. The highest temperature after emergency braking was 461°C and 359°C without and with considering airflow cooling, respectively. The equivalent stress could reach 269 MPa and 164 MPa without and with considering airflow cooling, respectively. However, the maximum surface stress may exceed the material yield strength during an emergency braking, which may cause a plastic damage accumulation in a Brake Disk without cooling. The simulation results are consistent with the experimental results well. © 2012 The Nonferrous Metals Society of China.