Increased Capability and Interface for Computational Code for Implosion: Parameters, Procedures, Constitutive Model Calibration & Modeling GUI

Period of Performance: 08/22/2013 - 02/21/2015


Phase 2 SBIR

Recipient Firm

Weidlinger Assoc., Inc.
40 Wall Street 19th Floor
New York, NY 10005
Principal Investigator


In Phase I, WAI performed an assessment of the critical deficiencies in the Aero-F/DYNA3D suite of physics-based computational analysis tools for implosion applications. This assessment resulted in the identification of three specific areas for improvement: 1. Material constitutive modeling and calibration in DYNA3D; 2. Modeling capabilities for composite implodables; 3. Enhancements to the functionality and usability of X-FEM in DYNA3D. This Phase II proposal addresses these three areas through the following developments. First, an improved constitutive model will be implemented in DYNA3D the WAI damage model which addresses the deficiencies in the currently available material models. A new software mc^2: Material Constitutive Calibrator will be developed in parallel for automated calibration of this (and other) model(s). Second, a new element the WAI composite element will be implemented in DYNA3D for accurate calculation of the stress field in composite implodable and therefore accurate assessment of the material failure criterion. Calibration of this element for material failure will also be performed in mc^2. Lastly, the X-FEM capabilities in DYNA3D will be improved through linkage with WAI damage model and removal of ad hoc user input parameters that make calibration problematic. Calibration will be similarly performed using the mc^2 software.