Modelling and stability analysis for melt flows in laser cutting

激光切割熔体流动建模与稳定性分析

• 批准号: 322010330
• 负责人: Professor Dr. Georg Vossen
• 金额: --
• 依托单位: Fachbereich 04 - Maschinenbau und Verfahrenstechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/322010330?language=en
• 关键词: Modelling; stability; analysis; melt; flows

In this research project a model for laser cutting will be developed. The model describes the melt flow which will be investigated for stability in dependence to the parameters of the process. The conditions gained from the stability analysis deliver, as an aim of this research project, a connection between process parameters and the dynamic process state, i. e. in particular parameter domains for a cut with high or low quality. The investigated parameters are the wavelength and intensity distribution of the laser radiation, the material state, the cutting velocity as well as the melt flow driving forces induced by the cutting gas. To understand the influence of the occuring quantities, the model is developed hierarchically and examined in each case for stability.

在本研究项目中，将开发激光切割模型。该模型描述了熔体流动，其将被研究的稳定性依赖于工艺参数。从稳定性分析中获得的条件，作为本研究项目的一个目的，传递过程参数和动态过程状态之间的联系，即。e.特别是用于具有高或低质量切割的参数域。研究的参数是激光辐射的波长和强度分布、材料状态、切割速度以及由切割气体引起的熔体流动驱动力。为了了解发生量的影响，该模型是分层开发的，并在每种情况下检查稳定性。