A macroscale FEM-based approach for selective laser sintering of thermoplastics

被引：18

作者：

Ganci, Mario ^{[1
]}

Zhu, Wei ^{[2
]}

Buffa, Gianluca ^{[1
]}

Fratini, Livan ^{[1
]}

Bo, Song ^{[2
]}

Yan, Chunze ^{[2
]}

机构：

[1] Univ Palermo, Dept Chem, Management, Comp Sci,Mech Engn, Viale Sci, I-90128 Palermo, Italy

[2] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2017年 / 91卷 / 9-12期

关键词：

Selective laser sintering; Additive manufacturing; Polypropylene; Finite element modelling; Phase change; MECHANICAL-PROPERTIES; SEMICRYSTALLINE POLYMERS; SIMULATION; SPECIMENS; TEMPERATURE; EVOLUTION; POWDER;

D O I：

10.1007/s00170-017-9998-5

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A numerical approach to model the selective laser sintering (SLS) of polypropylene is proposed. A 3D thermal model was developed and thus enables the prediction of the temperature fields and the extension of the sintered area in the powder bed taking into account the phase change during multiple laser passes. Powder-liquid, liquid-solid and solid-liquid phase changes were modelled during the SLS and the subsequent cooling processes. Then, a 3D thermomechanically coupled model was set up based on the temperature results of the thermal model in order to predict the distortion of the produced parts after cooling down. Different pre-heating temperatures were considered, highlighting their influence on the final part properties.

引用

页码：3169 / 3180

页数：12

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