Version 4.0 2/2/04

• A numerical user interface has been included. Node coordinates, element definitions and all other data can be added, modified or delete using this interface.

• Icons have been added to the Graphical User Interface. More Icons will follow.
• Graphic line intersection and extend functions have been improved.

• Modeling using pre-defined objects has been included. The objects are defined using parameters, and copied into the model. The advantage of using objects is that the object only needs to be defined once and can be easily modified by changing the value of the parameters. Several objects are available: H-beam, Tubular, plate, and others are in development. The objects are defined in a simple modeling language which enables users to define their own objects.
• The spring support has been added to the element database. This element behaves like a flexible support and is defined by a full stiffness matrix which can be entered by the user. Define a new group at the [Define, Element group...] and press at the <Spring> button to show the stiffness matrix of the spring support element. Enter the stiffness values, and use this group when you define the spring element.
• The way loads are shown has changed. At the previous releases only the active loadcase was shown, while loadcombinations were not visualized. Now you can choose to see, all loadcase, only the active loadcase or the active loadcombination. Use [View,Load,....] to set your preference.
• In the [Analyse] menu a modelcheck option has been included. This feature also includes a auto correct option.
• Thick plate bending element has been added to the element library.

• US beam sections have been included in the sections database. Do [Define, groups...] and choose <section tools> to use this feature.
• The stiffness matrix written to disk more efficiently, which improves solving time.

Version 3.0 30/10/00

• Element distributed loads and pressures are are now available. Select an element and do [Add, loads, Element pressure Loads..].
• A database with H-beam cross sectional properties has been included. Do [Define, groups...] and chose <section tools> to use this feature.
• Single element placement has been simplified. It is no longer required to place nodes in advance. To place elements go directly to [Add, single element..].
• The <Delete> button has been activated. Take care, Undo will not work!

• The grapical interface has been improved. <Right Mouse Button> will now give a context sensitive menu, while <ESC> stops all actions.
• All visible nodes can be used to snap on.

• The following options have been added:
• Intersection of two graphic lines. Select two graphic lines and do [Add, graphics, intersection]. This option will either generate the intersection point of two lines if they are in one plane or will generate the shortest distance line between the two lines in case they are not in one plane. If the intersection point or minimum distance line is beyond the length of the line(s), a line extension will be generated to the intersection point.
• Snap to intermediate point on a graphic. This option will allow snapping to any visible graphic node on any graphic during adding and editing.
• Shading effect from a simulated light source has been included. Use [Settings, Options..] to change the settings of shading.
• The following has been changed:
• The selection process of graphics has been simplified. There is no distinction between Graphic nodes and Graphic elements any more.
• The drag/drop of nodes and graphic point can now only be done after stopping the selection process by pressing right mouse button. This has been done to avoid uncontrolled movement of the selected nodes during selecting.

• The following options have been added:
• Load cases; do [Define, loadcases...] to open the loadcase definition form. Here normal user defined nodal loadcases or intertia loadcasescan be defined. The system will be solved for each loadcase, and the results can be combined using load combinations.
• Load combination; do [Post-process, Load Combinations...] to define the Load Combinations from the previously defined load cases. The post process utilities all use load combinations.

Version 1.27 21/02/00

• Problems with international settings resolved. Various errors should be resolved now. Runtime error 13,5 6,9 were all caused by this problem.
• A 2-D CAD interface is now included. Use [File, import model...] to import 2-D dxf CAD files.
• Reaction forces included in report file.

• Hiddenline is much faster now.
• Filled contour plots are now available.

The following errors have been found and removed:

• Error in 3-D beam elements removed. The definition of the local axis was wrong giving strange results in some cases.

The following options have been added:

• Element refine tool [Edit, Refine Elements]. Any selected element will be split into two new elements with the same properties and type.
• The element local axis can now be modified using the new added options on the -Modify / Review Element- form, which can be activated using [Edit, Modify Selection...] after selecting one or more elements.
• The -Define / Modify Groups- form has been updated, making it possible to rename and delete groups as required and to change any parameter for all groups in one simple action. Also a section tool has been added which calculates the sectional properties of tubular cross sections.
• Hiddenline has been included in this release. Do [View, Hiddenline] to redraw view 1 in the hiddenline mode. Hiddenline printing is not yet activated. The fill color can be changed using [Settings, Color...] <Hiddenline fill color> . The balance between complete hiddenline and minimum drawing time can be set using the two hiddenline parameters as included on the -General Options- form.
• Preperations to include inertia loads into the program has led to the inclusion of the mass matrix calculation of the total structure. This option can be activated in the -Analysis Options- form. The mass matrix will be dumped in a file called MODELNAME.MAS .The last lines in this file are per degree of freedom: (Total mass , Total moment of inertia, Center of mass coordinate).
• The defomation of the structure can be made visible more clearly using the new option to plot the displacements using contour plots. Use [Post-process, Options...] to open the -Post-process Options- form, and select <Displacement Contour plot> to activate this option.

• "Runtime error 13 type mismatch" when starting view control resolved.
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• This error occurred when the decimal separator mark on the users computer was set to comma(,) instead of point(.).
• Program did not select anything after pasting
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• This error occurred when accidentally a past was done while the clipboard was empty.
• Multiple selection of graphic elements for [Edit, Modify selection.. ] included.
• [View, window] enabled. This option will allow the user to define a new view window by drawing a rectangular fence around a part of the model.The contents of the fence will be the new window. Follow the instruction in the 'Status Line' (Left Bottom of screen).

• Included a modeling and analyzing demonstration in the program. Do [Info, Run Demo] to run the demo.

• View a selection of elements per view is now possible. Use [View, View set..] to activate the view set form. In the -Define elements to view- frame the elements can be selected for the active view.
• View a selection of elements for post processing is now possible. Use [Post-process, Options...] to activate the option form. In the -Define elements to view- frame the elements can be selected for view 1 only.

• Minor update

• 3-D beams have been included
• Plate elements have been included

• Minor Update

• First release of FesaWin
• Basic element library with, membranes, rods, 2-D beams.