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Femap - Finite Element Calculations

Femap is an advanced engineering simulation software program that creates finite element analysis models of complex engineering products and systems, and displays solution results. Femap can virtually model components, assemblies or systems and determine the behavioral response for any operating environment.


Femap is CAD-independent. Geometry data from all major CAD systems including CATIA, Pro/Engineer, NX, Solid Edge, SolidWorks and AutoCAD can be imported. Once imported we prepare the model for analysis. Potentially troublesome entities, such as slivers, are removed or suppressed. Femap also offers a wealth of geometry creation and modification functions so we can make necessary model changes in preparation for finite element model creation.

Finite Element Meshing

Femap’s 3D solid and surface meshers are tuned to generate high-quality meshes, providing well-shaped elements to ensure accurate results. Femap gives us full control over all mesh generation parameters including mesh sizing, meshing of small features, growth factors, short edge suppression, etc. With complex geometry, modification of the mesh is often required in areas where greater accuracy is desired. For this situation Femap’s Meshing Toolbox allows us to interactively modify mesh sizing parameters on the underlying geometry, and see the mesh update automatically. We can also view element quality feedback live while modifying the mesh. This ensures that a high-quality finite element model is created.

Assembly modeling

Femap with NX Nastran supports assembly modeling, including automatic contact detection that determines the components initially in contact. The contact regions can be set to be simply in contact (with or without friction) or glued together. The contact calculations performed by NX Nastran are iterative and update during the solution, to take into account deformation changes representing the true contact condition in the final results.
Other types of component assembly modeling techniques also supported include spot-weld, fastener elements, and bolted joints with optional pre-loading.

Beam Modeling

Besides solid and shell element models Femap also supports beam modeling and meshing. This technique allows models comprising long, slender components (for which a solid meshing approach would create a large, unwieldy model) to be represented by one-dimensional elements with associated properties.

Composite Modeling

The use of composite materials in designs has increased significantly in recent years, and Femap helps us model and postprocess results on composite structures. With Femap’s laminate editor and viewer, we can update the laminate properties interactively as we create and modify plies in the laminate.


A wealth of visualization capabilities help us quickly understand the model behavior and present the results in an analysis report.

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