首页> 外文期刊>International Journal of Heat and Mass Transfer >Porous metal produced by selective laser melting with effective isotropic thermal conductivity close to the Hashin-Shtrikman bound
【24h】

Porous metal produced by selective laser melting with effective isotropic thermal conductivity close to the Hashin-Shtrikman bound

机译:通过选择性激光熔化产生的多孔金属,其有效各向同性热导率接近Hashin-Shtrikman界

获取原文
获取原文并翻译 | 示例
           

摘要

Additive manufacturing may be a novel method for fabricating porous materials. These materials can achieve effective performance because of their internal geometries. Metal-additive manufacturing is expected to utilize thermal conduction materials and devices. We have developed a porous metal with effective isotropic thermal conductivity by using metal-selective laser melting additive manufacturing. The internal pore structure was designed by topology optimization, which is the most effective structural optimization technique to maximize effective thermal conductivity. The designed structure was converted to a three-dimensional STL model, which is a native digital format of additive manufacturing, and assembled as a test piece. Effective thermal conductivity was measured by a steady-state method in which the effective thermal conductivity was calculated from a one-dimensional temperature gradient and the heat flux of the test pieces. The test pieces showed an effective thermal conductivity close to the Hashin-Shtrikman or Maxwell-Eucken bound, which is the theoretical limit of effective performance with an error less than 10%.
机译:增材制造可能是制造多孔材料的一种新颖方法。这些材料由于其内部几何形状而可以实现有效的性能。预计金属增材制造将利用导热材料和器件。我们已经通过使用金属选择性激光熔融增材制造技术开发出了具有有效各向同性导热性的多孔金属。内部孔结构是通过拓扑优化设计的,这是使有效导热率最大化的最有效的结构优化技术。设计的结构被转换为三维STL模型,这是增材制造的原始数字格式,并组装为测试件。有效导热系数通过稳态方法测量,其中有效导热系数是根据一维温度梯度和试件的热通量计算的。试件显示出接近于Hashin-Shtrikman或Maxwell-Eucken极限的有效导热率,这是有效性能的理论极限,误差小于10%。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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