Figure 9: Experimental modal analysis (left) versus a finite element analysis (right) of an exhaust system. After collecting Frequency Response Functions (FRFs) on the exhaust system, a MAC analysis was done between the first thirteen experimental test modes and the first thirteen finite element analysis modes. The results are shown in Figure 10. Their 3D CAD and Finite Element Analysis software is a tough competitor for the big names. Creo offers scalable 3D CAD product development packages and tools. Those tools feature modelling and design, simulation and analysis, augmented reality and additive manufacturing. . Emphasises practical finite element analysis with commercially available finite element software packages. Presented in a generic format that is not specific to any particular finite element software but clearly shows the methodology required for successful FEA. Focused entirely on structural stress analysis.

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VisualFEA
Developer(s)	Intuition Software
Initial release	January 2000
Stable release	5.11 / January 18, 2016
Operating system	Windows, Mac OS X
Type	Finite element analysis
License	Proprietary
Website	[1]

VisualFEA is a finite element analysis program running on MS Windows and Mac OS X platforms. The program is being developed and distributed by Intuition Software, Inc. in South Korea, and is used chiefly for structural and geotechnical analysis. The strongest point of the program is its intuitive and user-friendly usage based on graphical pre- and postprocessing capabilities. VisualFEA has educational functions for teaching and learning structural mechanics and finite element analysis through graphical simulation. Thus, this program is widely used in college courses related to structural mechanics and finite element method.

Overview[edit]

VisualFEA is a full-fledged finite element analysis program with many easy-to-use but powerful features, which can be classified largely into four parts: finite element processing, pre-processing, post-processing and educational simulation. All the functions are integrated into a single executable module, which is a characteristic of the program distinguished from other finite element analysis programs generally composed of multiple modules. The whole procedure from pre-processing to analysis, and to post-processing can be completed on the spot without launching one program after another, or without pipelining data from one program to another.

Processing[edit]

VisualFEA can solve the following types of problems.

Mechanical analysis

Truss, frame, plane stress, plane strain, axisymmetric, plate bending, shell and 3D solid

Linear, material nonlinear or geometric nonlinear analysis

Static or dynamic analysis

Construction staged analysis

Geotechnical analysis (consolidation, slope stability analysis)

Heat conduction analysis

Plane, axisymmetric and 3D volume

Steady state or transient analysis

Linear or nonlinear material model

Fire damage analysis

Seepage analysis

Plane, axisymmetric and 3D volume

Steady state or transient analysis

Confined or unconfined boundary condition

Coupled analysis

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Heat conduction coupled mechanical analysis

Seepage coupled mechanical analysis

Pre-processing[edit]

A finite element model in VisualFEA consists of various objects: curve, primitive surface, node, element and mesh. VisualFEA has its own CAD-like capabilities of creating graphical objects without aid of external programs. VisualFEA can create structured or unstructured meshes in two- or three-dimensional space using the following mesh generation schemes.

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Mapping scheme (lofting, tri-mapping, transfinite mapping, isoparametric mapping)
Sweeping scheme (extrusion, translation, rotation, twisting)
Auto mesh scheme (triangulation, tetrahedronization)
Mesh treatment (mesh carving, mesh operation, intersection, distortion)

https://marinebrown.amebaownd.com/posts/18199905. The program has the function to save the generated mesh data in text format for use by other application programs. Other pre-processing capabilities include the following items.

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Definition and assignment of boundary conditions, material properties and element joints, etc.
Node number or element number optimization
Handling of element orientation, local coordinate axes

Post-processing[edit]

VisualFEA has various functions of visualizing the numerical data generated by solving the analysis models. The most frequently used graphical representation of the data are the contour and vector images. There are many other forms of graphical representation available in VisualFEA.^[1]

Iso-surface
Sliced plane, parallel plane, cross plane
Diagram (bending moment diagram, shear force diagram, etc.)
Curve plotting
Data probing
Animation

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Educational Simulation[edit]

VisualFEA can be used as a tool for computer-aided education of structural mechanics and finite element method. The tools are operated with the user-created modeling data and their ensuing analysis results on the basis of finite element technology. They are devised to promote the understanding, and to stimulate the interest in the subjects by substantiating the conceptual principles and visually exhibiting the complex computational processes with the aid of interactive computer graphics. The topics covered by the educational functions are as follows.

Mathematical relationships of internal forces in rigid frames.^[2]
Geometric properties of an arbitrarily defined member section
Stresses on the member sections
Moving load
Mohr circle and its application to elasto-plastic yielding.^[3]
Stress path and yield surface
Buckling
Stiffness assembly and solution process in the finite element analysis.^[4]
Shape function and interpolation
Eigen value analysis.^[5]
Concept of adaptive analysis

VisualFEA/CBT[edit]

VisualFEA/CBT is an educational version of the program^[6] published by John Wiley and Son's Inc. as a companion program to a textbook^[7] on finite element method. The program has the limitation of 3000 nodes that can be handled.

References[edit]

^J.Y.Lee and S-Y.Ahn, Interactive visual