This file provides an index to the example problems used to demonstrate FEMIS
capabilities.  In many examples, comments are included to provide a tutorial 
function.  Some examples may suggest the usefulness of small models for
prototyping large-scale FEM models.

In some respects, FEMIS is a "matrix solver" which just happens to have a 
small FEM library.  
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WGTRUSS1.DAT    Static Analysis of Plane Truss Structure
                   in the textbook (pages 325-331)
                Matrix Analysis of Framed Structures, 3rd edition.
                   (used with permission of the authors)

WGGRID2.DAT     Static Analysis of a Grid Structure, Example 2,
                   in the textbook (pages 342-345)
                Matrix Analysis of Framed Structures, 3rd edition.
                                                                              
WGPF1.DAT       Static Analysis of a Plane Frame Structure, Example 1,
                   in the textbook (pages 337-339)
                Matrix Analysis of Framed Structures, 3rd edition.
                                                                              
WGSF1.DAT       Static Analysis of a Space Frame Structure, Example 1,
                   in the textbook (pages 364-366)
                Matrix Analysis of Framed Structures, 3rd edition.
                                                                              
WGSF2.DAT       Static Analysis of a Space Frame Structure, Example 2,
                   in the textbook (pages 367-369)
                Matrix Analysis of Framed Structures, 3rd edition.                 
                                                                              
WGST1.DAT       Static Analysis of Space Truss Structure, Example 1,
                   in the textbook (pages 345-347)
                Matrix Analysis of Framed Structures, 3rd edition.

SMOPX.DAT       Demonstrates matrix manipulative capabilities of FEMIS for
                Vibration Analysis of a Free-Free Beam (2-D).  Modal Analysis 
                by inversion of Mass Matrix.  Symbolic matrix operations perform
                Guyan reduction to eliminate rotational Dofs.

BEAM3D.DAT      Demonstrates Sign Convention orientation using FEM Analysis
                of 3-D Cantilever Beam.  Member forces can be compared to 
                results of simple static analysis.  Force Boundary Conditions 
                (BCs) are used to establish deflected shapes; then Displacement 
                BCs are used to replicate the original force system.

DET.DAT         Test Determinant Evaluation.

VECTOR.DAT      Illustrates the use of the "vector" operation in 2-D, 3-D,
                and Grid computational space.  Vector describes direction
                cosines of a vector and can be used to develop transformation
                matrices.  This operation is developed automatically within 
                normal FEM operations.  It provides transformation tools to
                rotate global coordinate systems at specific locations.

SPTC_FUN.DAT    Demonstrates the use of single-point constraints.  A hinge
                is modeled at the center of a clamped beam.  Member forces
                can be compared to the results of simple static analyses.

BOX_PLOT.DAT    Graphics Test using a Box Shape.  It may be instructive to 
                try Orientation & perspecTive plots.

MPTC_FUN.DAT    Demonstrates the use of multi-point constraints.  A simple
                frame structure is modeled using a rigid girder.  Comparable
                2-D and 3-D models are analyzed.
                
PLATE.DAT       Demonstrates the ability to incorporate finite elements
PLATE._MB       created outside FEMIS into the FEM database by means of
                templates.  This example considers a simply-supported 
                plate subjected to a uniform load.  This is an example
                of FEMIS use as a development platform.  The binary file
                PLATE._MB, containing the element stiffness matrix, must be 
                in the current directory.

MEMBRANE.DAT    Another example of incorporating external finite elements
                into FEM database.  This is a test of membrane elements
                subjected to "shear-lock" critical loads.

SPRINGS.DAT     Vibration analysis of spring-mass systems.  Demonstrates
                alternative methods for eigenvalue analyses.  Spring
                element references nodepoint for connectivity .. geometric
                nodepoint data is not required.  (A nodepoint reference 
                catalogs the nodepoint.)

BEAMBUCK.DAT    Buckling Analysis of 2-D Column using Beam2 elements.
                Single-point constraints model inextensional behavior and 
                reduce DOFs with improved accuracy.

FRAME_BU.DAT    Frame Buckling Analyses of 2-D Structure using incremental
                stiffness matrix.  Demonstrates ability of FEMIS to assemble
                elements selectively and advantages to this approach.

AXIAL.DAT       Demonstrates 1-D vibration analysis using displacement/strain
                compatible (C1) elements.

REVISE.DAT      FEMIS has the ability to reorder dofs based on the magnitude
                of diagonal terms within a Stiffness matrix.

UNDO.DAT        This simple example shows how to repeat operational sequences
                within the input file by using the "marker" facility within
                the "reviewinput" operation.

TRANSFER.DAT    A comparison is made between FEM analysis and modeling by
                means of transfer matrices.  A transfer matrix for a 2-D
                beam element is derived from the FEM stiffness matrix.

DEFECT1.DAT     This model demonstrates the ability to simulate structural
                defects by means of single-point constraints and local
                spring systems.

PSBEAM1.DAT     A simple model is used to demonstrate deflection behavior of
                post-tensioned, pre-stressed concrete beam.  A comparison is
                made with more conventional models.  The reinforcing pattern
                is a straight line in this model.

PSBEAM2.DAT     This is a repeat of PSBEAM1.DAT except the reinforcing 
                pattern is parabolic.

FEMFLEX1.DAT    Comparison analyses are made using FEM and the matrix Force
                method.  The Force method is facilitated by using symbolic 
                matrix operations.