Computer Aided Engineering Facilities
NATC has both Intel-based and UNIX workstations for
Element Analysis (FEA) and Computer Aided Design (CAD). FEA is performed using
MSC.FEA, MSC.Nastran for Windows, and EDS I-DEAS.
Several different CAD programs are used depending on the
application. For electrical schematic drawings, NATC utilizes OrCAD. AutoCAD is
used for fabrication drawings. Pro/Engineer, Unigraphics, and I-DEAS are used
for 3-D part design.
MSC.ADAMS software is used for 3-D modeling and dynamics
analysis of multi-body systems including full vehicles and vehicle subsystems.
MATLAB/Simulink, by The Mathworks, is used for design and analysis of vehicle
control systems, such as braking systems and transmissions.
When required, Simulink control system models are used in ADAMS
vehicle models to ensure proper operation of vehicle subsystems during
proving ground evaluations of vehicle characteristics (e.g. performance,
handling, stability, braking, etc.). Finite element models of components can
also be imported into ADAMS to simulate the flexibility of components (e.g.
control arms and frame rails) and determine the stresses imparted to those