Simulation of the Selective Laser Melting (SLM) Process for the Additive Manufacturing of Steel Parts (B01)

用于钢零件增材制造的选择性激光熔化 (SLM) 工艺模拟 (B01)

• 批准号: 438039474
• 金额: --
• 依托单位: Departement Maschinenbau und Verfahrenstechnik
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/438039474?language=en
• 关键词: Simulation; Selective; Laser; Melting; SLM

Selective laser melting is the standard process for additive manufacturing of complex metal parts. To predict resulting material properties, the project provides a model and computational framework for its simulation, ranging from the micro-scale (powder bed) to the meso-scale (mm range). To that end, local melting, flow, and solidification are simulated using the Lattice-Boltzmann method, considering more and more physical phenomena. By coupling the LB simulation to a solid mechanics FE simulation residual stresses are predicted. Upscaling leads to effective material properties and state of material for use in macroscopic simulations.

选择性激光熔化是复杂金属零件添加制造的标准工艺。为了预测所产生的材料性质，该项目为其模拟提供了一个模型和计算框架，范围从微尺度(粉床)到介观尺度(毫米范围)。为此，考虑到越来越多的物理现象，采用格子-玻尔兹曼方法对局部熔化、流动和凝固进行了模拟。将LB模拟与固体力学有限元模拟相结合，对残余应力进行了预测。放大导致在宏观模拟中使用有效的材料属性和材料状态。