• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (12): 91-98.doi: 10.3901/JME.2019.12.091

• 材料科学与工程 • 上一篇    下一篇

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基于正交试验的玻璃壳热应力影响因素分析

钱小辉1,2,3, 马骁妍1,2, 秦中华1,2, 侯少静1,2, 徐美杭1,2, 张鹏2,3, 朱自安1,2,3   

  1. 1. 中国科学院大学核探测与核电子学国家重点实验室 北京 100049;
    2. 中国科学院高能物理研究所 北京 100049;
    3. 中国科学院大学核技术及应用学院 北京 100049
  • 收稿日期:2018-05-31 修回日期:2019-02-21 出版日期:2019-06-20 发布日期:2019-06-20
  • 通讯作者: 朱自安(通信作者),男,1966年出生,研究员,博士研究生导师。主要研究方向为低温超导技术、精密机械工程。E-mail:Zhuza@ihep.ac.cn
  • 作者简介:钱小辉,男,1987年出生,博士研究生。主要研究方向为精密机械工程。E-mail:qianxh@ihep.ac.cn;马骁妍,女,1974年出生,硕士,高级工程师,硕士研究生导师。主要研究方向为机械工程,中微子探测器设计。E-mail:Maxy@ihep.ac.cn
  • 基金资助:
    中国科学院战略性先导科技专项(A类)资助项目(XDA10011100)

Analysis of Glass Shell's Thermal Stress Based on Orthogonal Experiment

QIAN Xiaohui1,2,3, MA Xiaoyan1,2, QIN Zhonghua1,2, HOU Shaojing1,2, XU Meihang1,2, ZHANG Peng2,3, ZHU Zian1,2,3   

  1. 1. State Key Laboratory of Particle Detection and Electronics, University of Chinese Academy of Sciences, Beijing 100049;
    2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049;
    3. School of Nuclear Technology and Applications, University of Chinese Academy of Science, Beijing 100049
  • Received:2018-05-31 Revised:2019-02-21 Online:2019-06-20 Published:2019-06-20

摘要: 为研究江门中微子试验(JUNO)光电倍增管(PMT)玻璃壳在温度载荷下的应力分布,以避免玻璃壳发生脆性破坏,对不同灌封胶材料下的玻璃壳热应力进行有限元模拟分析。采用正交试验方法,选取灌封胶材料属性参数中的弹性模量、泊松比和热膨胀系数作为研究因素,建立L25(53)正交表并得到25组数值模拟方案。对数值计算结果进行极差和方差分析,结果显示影响设计指标的主要因素为弹性模量和热膨胀系数,次要因素为泊松比。弹性模量对玻璃壳热应力有显著影响,热膨胀系数对玻璃壳热应力有一定影响,泊松比对玻璃壳热应力无显著影响。对各因素水平的算术平均值进行曲线拟合,提出基于拟合函数解析解的敏度分析方法来得到设计指标对各因素的敏感程度。结果表明,玻璃热应力对不同灌封胶材料的各参数敏感度不同。实际工程可针对最大敏度参数进行材料的改性工作,从而使得灌封胶材料的选用和改性更具有针对性和方向性,研究结果对实际工程具有极强的指导意义和参考价值。

关键词: 方差分析, 敏度分析, 曲线拟合, 热应力, 正交试验

Abstract: In order to understand the glass shell's stress of PMT applied in the Jiangmen Underground Neutrino Observation (JUNO) under temperature load to avoid glass shell breakage, the effect of different potting adhesives on the glass's thermal stress is simulated. In the orthogonal test, the material's elastic modulus, Poisson ratio and thermal expansion coefficient are selected as the research factors. The L25(53) orthogonal array is established and there are total 25 sets of numerical simulation schemes. According to the results of range analysis and variance analysis, the primary factor affecting glass's thermal stress is modulus and thermal expansion coefficient. The secondary factor is the Poisson ratio. The elastic modulus has a significant effect on the thermal stress of glass shell. The thermal expansion coefficient has a certain effect on the thermal stress of glass shell. And Poisson's ratio has no significant effect on the thermal stress of glass shell. Curve fitting for the arithmetic mean of each factor level is done and a sensitivity analysis method based on the analytic solution of fitting function is proposed to obtain the sensitive of the design index to each factor. The material modification can be carried out according to the maximum sensitivity parameter. So the selection and modification of the potting material is more pertinence and directivity The research results have great guiding significance and reference value for the practical project.

Key words: curve fitting, orthogonal test, sensitivity analysis, thermal stress, variance analysis

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