Andy Anderson

Email: anderson1@llnl.gov
Phone: +19254239634

Education and Professional Experience

  • Ph.D., Mechanical Engineering, University of California at Berkeley, 1996
  • M.S., Mechanical Engineering, Rensselear Polytechnic Institute, 1985
  • B.S., Mechanical Engineering, Rensselear Polytechnic Institute, 1982
Dr. Anderson’s early career involved combined computational modeling, experiments, and design for a variety of projects in the LLNL Laser Program. Assignments included development of advanced copper vapor lasers for the Atomic Vapor Laser Isotope Separation (AVLIS) program, evaluating options for chamber x-ray protection of the National Ignition Facility (NIF) target chamber, and fielding of femtosecond laser cutting machines. His more recent work focuses on applications and code development for the ALE3D multiphysics code in the Weapons and Complex Integration (WCI) Program. Areas of interest include heat transfer, materials modeling, and laser energy deposition. Projects have included a variety of thermomechanical simulations for WCI and munitions work for the DoD, many related to blast effects. Dr. Anderson’s most recent efforts involve code development and simulations for mesoscale modeling of powder melt and consolidation for additive manufacturing.

Research Interests

Current research areas of interest center on moderate-intensity laser (MW/cm2 range) deposition onto metals and metal powders, and the resulting material response. Understanding of the energy balance between deposition and the various loss mechanisms, including vaporization effects, is key to predictive modeling of the SLM process. Material response in the melt pool is driven by surface tension and recoil pressure, which need to be properly modeled to enable the mesoscale model to predict finished part quality, primarily density, for a given set of powder and laser conditions.

Selected Publications

Khairallah, S. and Anderson, A., “Mesoscopic Simulation Model of Selective Laser Melting of Stainless Steel Powder,” Journal of Materials Processing Technology (in press).

Moss, W., Anderson, A., McNenly, M., and Vignes, R., “Small arms suppression project: LLNL final report,” Lawrence Livermore National Laboratory, LLNL-SR-620692 (Feb 2013).