| 传感器加热单元热力耦合分析 |
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| 引用本文： | 刘英伟,乔英杰.传感器加热单元热力耦合分析[J].材料科学与工程学报,2011(3):375-380. |
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| 作者姓名： | 刘英伟 乔英杰 |
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| 作者单位： | 哈尔滨工程大学材料科学与化学工程学院; |
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| 基金项目： | 国家自然科学基金(全量程瓦斯监测系统集成设计及机理研究)资助项目(60971020/F010907) |
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| 摘 要： | 加热单元是催化燃烧式传感器的重要元件,由氧化铝基板和以磁控溅射方法镀覆其表面的铂片组成。当电流通过时,铂片发热,形成温度场。由于温度分布不均匀,铂片和基板会产生变形并导致热应力的产生,这必然会影响到传感器的工作。为考察这种影响,本文采用有限元法对这一过程进行了热力耦合分析,得到了温度场和应力应变场。结果表明,传感器表面受到拉应力,在工作温度下,拉应力小于材料的屈服强度,传感器可以正常工作。
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| 关 键 词： | 热力耦合分析 有限元模拟 ANSYS 传感器 |
Coupled Thermodynamic Analysis of Heating Unit of Sensor |
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| LIU Ying-wei,QIAO Ying-jie.Coupled Thermodynamic Analysis of Heating Unit of Sensor[J].Journal of Materials Science and Engineering,2011(3):375-380. |
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| Authors: | LIU Ying-wei QIAO Ying-jie |
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| Affiliation: | LIU Ying-wei,QIAO Ying-jie(College of Materials Science & Chemical Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | The heating unit,composed of an alumina board and platinum resistance slice(PRS) coated through magnetron sputtering approach,is an important part of catalytic combustion sensor.As electric current flows,the heat generated by PRS makes the temperature of board increase.The non-uniformly distributed temperature on the board can lead to thermal stress and the deformation of PRS and board,which affects the efficiency of sensor.In order to investigate the possible influence of temperature distribution,finite el... |
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| Keywords: | coupled thermodynamic analysis FEM simulation ANSYS sensor |
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