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FEM Add-on for Alibre Design
Proven Finite Element Tools for Alibre Design - A full-featured, simulation solution for linear static and eigenvalue analysis.
PreSys and NISA, advanced finite element analysis tools, are now combined for use by Geomagic users.  This full-featured package allows users to automatically convert Geomagic CAD data into finite element models, define material and loading constraints and perform a design simulation.  This type of analysis allows engineers to identify potential problems and improve product designs, reducing product development time and cost, while improving performance.

PreSys, a Pre/Post-Processor with a strong heritage, allows the user to create even the most complex finite element models easily. It is a full-featured, core solution that can be used on its own or with a variety of available add-on applications. The system offers advanced
automeshing tools to provide the highest quality mesh with little CAD data preparation on imported or created geometries.  All required analysis data can be created via intuitive forms.
The solver engine, NISA is one of the most comprehensive engineering analysis suites available and has been an engineer’s favorite for more than 40 years.  It is capable of extremely accurate linear static and eigenvalue analyses.
Static Analysis Features:
• Selection of Efficient Solvers
• Buckling Analysis
• Interia Relief
• Rigid Links & MPC
• Interlaminar Shear & Edge Effects for Composite Elements
• Multiple Load Cases

Material Properties
• Isotropic or Orthotropic, Temperature Dependent
• Layer & Sandwich Composite Material
• Various Composite Failure Criteria

Boundary Conditions
• Specified Nodal Displacement (Zero/Non-zero; Translation or Rotation)
• Coupled Displacement; Multipoint Constraints

Loading
• Concentrated Force, Moment, Pressure Load, Thermal Load
• Gravity, Linear/Angular Acceleration
• Moving Load

Printed & Graphical Output
• Displacements, Stresses & Strains at Elements & Nodes
• Principle Stresses & Their Directions
• Von Mises, Maximum Shear & Octahedral Shear Stresses
• Averaged & Unaveraged Nodal Stresses, Element Stresses at Gauss Points & Centroid
• Buckling Load Forms & Mode Shapes

Linear Dynamic Analysis

Eigenvalue Analysis
• Natural Frequencies, Mode Shapes
• Modal Stresses & Strain Energy
• Multiple Eigenvalue Extraction Algorithms
• Extraction of Zero Frequencies (Rigid Body Modes) & Coincident Frequencies

Modal Dynamic Analysis
• Viscous, Structural, Proportional & Material Damping
• Capabilities to Handle Rigid Body Modes

Transient Dynamic Analysis
• Time Dependent Ground Excitations,  Nodal Forces & Pressure Loading
• Nonzero Initial Displacements
• Time History & Snapshot Output for Results
• Generation of Floor Response Spectra

Frequency Response Analysis
• Frequency Dependent Harmonic Ground Excitation, Nodal Force & Pressure
Loading
• Point-to-point Transfer Function Calculation

Random Vibration Analysis
• Stationary & Non-stationary Input
• Auto PSD & Complex Cross PSD Input
• Numerical or Exact Integration of the PSDs to Compute the Covariance Matrices
• PSD & RMS Response Output

Shock (Response) Spectrum Analysis (Seismic)
• Multi-directional Displacement, Velocity or Acceleration Spectra Input
• Modal Combination Rules
• Absolute Sum
• Square Root of Sum of Square or RMS Sum
• Peak RMS or NRL Sum
• Complete Quadratic Combination (CQC) Sum
• Automated Mode Selection & Spectra Computation by U.S. Navy DDAM Method
• Missing Mass Correction