Process Modelling and Defect Prediction for Wire

线材工艺建模和缺陷预测

• 批准号: 2199349
• 金额: --
• 依托单位: CRANFIELD UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2199349
• 关键词: Process; Modelling; Defect; Prediction; Wire

Wire + Arc Additive Manufacture (WAAM) is a process for building large scale metallic engineering components of medium complexity in a layer-by-layer manner. The process is of significant interest to aerospace and other industry sectors due to its potential to reduce cost and lead-time for high value and critical components when compared to conventional manufacturing methods such as machining from solid billet or forgings.Residual stress and distortion are some of the main challenges of the WAAM process when building complex structures. They can lead to cracking, reduced mechanical properties and either result in build failure or require additional down-stream processing to rectify. Current models of residual stress and distortion for additively manufactured parts are computationally intense and unsuitable for Industry where reducing lead-time is vital. Developing computationally efficient models for the prediction of residual stress and distortion of complex additively manufactured parts would be extremely valuable.

线+弧增材制造（WAAM）是一种以逐层方式构建中等复杂度的大型金属工程部件的工艺。与传统的制造方法（如从实心坯料或锻件加工）相比，该工艺具有降低高价值和关键部件的成本和交货期的潜力，因此对航空航天和其他工业部门具有重大意义。残余应力和变形是WAAM工艺在构建复杂结构时的一些主要挑战。它们可能导致开裂，降低机械性能，并导致构建失败或需要额外的下游处理来纠正。目前用于增材制造零件的残余应力和变形模型计算量很大，不适合缩短交货期至关重要的工业。开发计算效率高的模型来预测复杂增材制造零件的残余应力和变形将非常有价值。