• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Materials >Localized Overheating Phenomena and Optimization of Spark-Plasma Sintering Tooling Design
【2h】

Localized Overheating Phenomena and Optimization of Spark-Plasma Sintering Tooling Design

机译：局部过热现象及电火花等离子烧结模具设计的优化

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present paper shows the application of a three-dimensional coupled electrical, thermal, mechanical finite element macro-scale modeling framework of Spark Plasma Sintering (SPS) to an actual problem of SPS tooling overheating, encountered during SPS experimentation. The overheating phenomenon is analyzed by varying the geometry of the tooling that exhibits the problem, namely by modeling various tooling configurations involving sequences of disk-shape spacers with step-wise increasing radii. The analysis is conducted by means of finite element simulations, intended to obtain temperature spatial distributions in the graphite press-forms, including punches, dies, and spacers; to identify the temperature peaks and their respective timing, and to propose a more suitable SPS tooling configuration with the avoidance of the overheating as a final aim. Electric currents-based Joule heating, heat transfer, mechanical conditions, and densification are imbedded in the model, utilizing the finite-element software COMSOL™, which possesses a distinguishing ability of coupling multiple physics. Thereby the implementation of a finite element method applicable to a broad range of SPS procedures is carried out, together with the more specific optimization of the SPS tooling design when dealing with excessive heating phenomena.
机译：本文展示了火花等离子体烧结（SPS）的三维耦合电，热，机械有限元宏观建模框架在SPS实验期间遇到的SPS工具过热的实际问题中的应用。通过改变出现问题的工具的几何形状来分析过热现象，即通过对各种工具配置进行建模，这些工具配置涉及具有逐步增大的半径的圆盘形垫片的序列。该分析是通过有限元模拟进行的，旨在获得包括冲头，冲模和垫片在内的石墨压模中的温度空间分布。确定温度峰值及其各自的时间，并提出一种更合适的SPS工具配置，并将避免过热作为最终目标。利用有限元软件COMSOL™，基于电流的焦耳加热，传热，机械条件和致密化被嵌入模型中，该软件具有耦合多种物理的独特能力。因此，在处理过多的加热现象时，将执行适用于各种SPS程序的有限元方法，以及SPS工具设计的更具体的优化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号