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首页> 外文会议>Symposium Proceedings vol.842; Symposium on Integrative and Interdisciplinary Aspects of Intermetallics; 20041129-1201; Boston,MA(US) >Mechanical Aspects of Structural Optimization in a Bi-Te Thermoelectric Module for Power Generation
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Mechanical Aspects of Structural Optimization in a Bi-Te Thermoelectric Module for Power Generation

机译：Bi-Te热电模块中用于发电的结构优化的机械方面

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摘要

The thermal stress and strain occurring on a Bi-Te thermoelectric module subjected to variable thermal conditions were estimated based on three-dimensional elastic-plastic finite element method (FEM) analysis. The analysis showed that mechanical integrity of the interface between a Bi-Te thermoelement and electrodes of Al and Mo coatings formed by atmospheric plasma spraying was significantly reduced and that shear strain rose to 0.6～1.1% in the vicinity of the interface. Furthermore, to estimate the sensitivity of configurational parameters of the module to the thermal strain, statistical sensitivity analysis based on the design of experiment (DoE) and response surface method (RSM) was conducted. The statistical analysis revealed that the thickness of electrode coatings of Al and Mo affected the thermal strain and that the thinner Al coating and the thicker Mo coating reduced the thermal strain. In this study, a thermal fatigue test machine was newly developed with a view to verifying these analytical studies.
机译：基于三维弹塑性有限元方法（FEM）分析，估算了在Bi-Te热电模块上经受可变热条件时发生的热应力和应变。分析表明，Bi-Te热电元件与大气等离子喷涂形成的Al和Mo涂层电极之间的界面机械完整性显着降低，界面附近的剪切应变上升至0.6〜1.1％。此外，为了估计模块的配置参数对热应变的敏感性，基于实验设计（DoE）和响应面方法（RSM）进行了统计敏感性分析。统计分析表明，Al和Mo电极涂层的厚度影响热应变，而Al涂层越薄和Mo涂层越厚，热应变就越小。在这项研究中，新开发了一种热疲劳试验机，以验证这些分析研究。

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