HIGH-FIDELITY MODELLING OF POWDER-BASED ADDITIVE MANUFACTURING PROCESSES

这个为期2年的项目旨在提高粉末增材制造（PBAM）工艺或3D打印中回收粉末和非球面颗粒粉末的可加工性。这将通过扩展东道机构开发的最先进的计算框架来实现，以提供对整个过程进行建模的能力。因此，该研究员将（1）建立一个新的程序，用于合并在超过500 ℃的温度下获得的粉末表征数据，相当于在PBAM构建室中经历的数据;（2）开发一个新的射线跟踪模型，以准确预测细粉末中的激光吸收;（3）开发一个准确的模型，以预测粉末熔化和蒸发;（4）精确定位晶粒形状对熔池动力学的影响，以允许非球形晶粒，同时保持粉末的可加工性（5）与工业和学术研究合作伙伴合作，以确保开发的模型得到广泛采用。该项目的影响是深远的：从降低PBAM的原材料成本到提高公众对高性能计算（HPC）在解决复杂科学/工程问题中的效用的认识。该项目的成功是通过汇集一个有能力的学者和工程师团队，在UEDIN和主机的学术和工业合作伙伴的网络互补的多学科技能，谁将与申请人合作，提供一个突破性的解决方案，这一研究挑战。及时授予该奖学金将有助于申请人发展自己的技能，独立开拓这一研究领域，并建立自己的全球胜任的研究团队。

This 2-year project aims to increase the processibility of recycled powders and powders with aspherical grains in powder-based Additive Manufacturing (PBAM) process or 3D printing. This will be achieved by extending a state-of-the-art computational framework, developed at the Host institution, to provide the ability to model a full cycle of the process. Therefore, the fellow will (1) establish a novel procedure for incorporating the powder characterisation data obtained at temperatures exceeding 500C, equivalent to those experienced in the PBAM build chamber; (2) develop a new ray-tracing model to accurately predict laser absorption in fine powders; (3) develop an accurate model to predict the powder melting and evaporation; (4) pinpoint the impact of grain shape on melt-pool dynamics to allow for aspherical grains while maintaining the powder processability (5) engage with industrial and academic research partners to ensure wide adoption of the developed models. The impact of the project is far-reaching: from reducing the costs of raw material for PBAM to increasing public awareness of the utility of high-performance computing (HPC) in solving complex scientific/engineering problems. The success of the project is ensured by bringing together a competent team of academics and engineers with complementary multidisciplinary skills at UEDIN and the host's network of academic and industrial partners who will work with the applicant to provide a ground-breaking solution to this research challenge. The timely award of this fellowship will help the applicant to develop his skills to pioneer this line of research independently and build his own globally competent research team.