Lawrence Livermore National Laboratory

HPC4Mfg | Modeling of Powder Dynamics in Metal Additive Manufacturing 2017

Event Summary

On August 10-11,2017, LLNL’s Global Security Principal Directorate and the High Performance Computing for Manufacturing (HPC4Mfg) Program hosted the Modeling of Powder Dynamics in Metal Additive Manufacturing meeting in Austin, Texas.

LLNL’s Wayne King served as the meeting chair and is the leader of LLNL’s Accelerated Certification of Additively Manufactured Metals Project. He and the organizing committee united 100 participants from industry, laboratory, and academia.

Presentations from keynote and plenary lecturers focused on the following topics: needs from models for powder spreading; flowability, spreadability, and segregation; effects of particle size, particle size distribution, and particle morphology; recycle and reuse of materials, and effects of environmental conditions. Breakout sessions were held to discuss each topic and gather feedback in areas such as scientific challenges and priority research directions.

There has been an increased interest in using modeling and simulation to understand the dynamics of powder spreading for metal additive manufacturing. A meeting report prepared by the organizing committee was submitted to DOE’s Advanced Manufacturing Office.

Attendee List

Meeting Agenda

Meeting Results

Event Photos


Welcome Remarks

Keynote — Effects of Particle Surface - Properties on Mechanical Behavior, and Calibration of Discrete Element Method (DEM) Models for Powder Spreading Simulations

Keynote — Discrete Element Method (DEM) Contact Models for Cohesive Particle

Keynote — Modeling Powder Spreading for Additive Manufacturin

Plenary Introduction — What is Needed from Models for Powder Spreading

Plenary Introduction — Key Parameters and Issues: Flowability, Spreadability, Stratification

Plenary Introduction — Key Parameters and Issues: Effects of Particle Size, Particle Size Distribution, and Particle Morphology

Plenary Introduction — Recycle and Re-Use of Materials

Plenary Introduction — Effects of Environmental Conditions

Supplemental Meeting WebEx Presentations

Exascale Simulation for the Design of Industrial-scale Chemical Reactors, Madhava Syamlal, National Energy Technology Laboratory — October 10, 2017

3D PBF – “A Miniaturized Solids Processing Plant in a Box” Key Aspects of Powder Handling, Bryan J. Ennis, E&G Associates, Inc. — October 17, 2017