在粉末床熔融过程建模中，关于将部分粉末传导近似为表面自由对流的计算高效方法的数据。

Data on a computationally efficient approximation of part-powder conduction as surface free convection in powder bed fusion process modelling.

作者信息

Zhang Wenyou, Tong Mingming, Harrison Noel M

机构信息

Mechanical Engineering, College of Engineering & Informatics, NUI Galway, Ireland.

Ryan Institute for Environmental, Marine and Energy Research, NUI Galway, Ireland.

出版信息

Data Brief. 2019 Sep 23;27:104559. doi: 10.1016/j.dib.2019.104559. eCollection 2019 Dec.

DOI:10.1016/j.dib.2019.104559

PMID:31656832

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6806439/

Abstract

This article is related to research article entitled "Resolution, energy and time dependency on layer scaling in finite element modelling of laser beam powder bed fusion additive manufacturing" [1]. This data article presents a computationally efficient approximation of part-powder interface conduction heat transfer, as convection heat transfer, thus eliminating the need for powder elements in the finite element model. The heat loss profile due to part-powder conduction was first characterised for a Ti6Al4V Powder Bed Fusion process. Cooling rate data was obtained for a range of powder in-plane depths. A matching cooling rate profile was obtained from free convection from the part surface, by calibration of the convection coefficient.

摘要

本文与题为《激光束粉末床熔融增材制造有限元建模中分辨率、能量和时间对层缩放的依赖性》的研究文章[1]相关。本数据文章提出了一种计算效率高的零件 - 粉末界面传导热传递近似方法，即对流热传递，从而无需在有限元模型中使用粉末单元。首先针对Ti6Al4V粉末床熔融工艺对零件 - 粉末传导引起的热损失曲线进行了表征。获取了一系列粉末平面内深度的冷却速率数据。通过对流系数校准，从零件表面的自然对流中获得了匹配的冷却速率曲线。