APK Download Apps Productivity Apeiron Truss 2D FEM Apeiron Truss 2D FEM Latest Version APK

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Description

The application can become a useful aid on theone hand for engineering students during their studies in checkinghand calculations, solving trusses of large element number, or evenin getting familiar with the basic steps of the finite elementmethod (FEM); and on the other for practicing engineers in quickon-site verification of simple problems fitting into the realm ofthis highly confined family of structures.

The Apeiron Truss 2D FEM code implements the linear finiteelement method with linear truss elements for calculating planartruss structures of arbitrary geometry, material properties andloading. As such, only nodal loads are allowed, while supports -also specified at nodes - may involve both fixed hinges androllers, this latter type nclines from the horizontal line at anangle specified by the user. The straight truss elements areexposed only to axial loading, hence only the axial stiffnessconstituents (Young modulus (E) and cross sectional area (A)) areto be prescribed.

After creating the geometry, the user can easily modify everyfeature of the structure (move a specific node, add or deleteelements, supports, and loads or change the cross sectioncharacteristics). The results are listed textually for preciseanalysis and visualized as well for easier understanding ofstructural behavior.

The modelling steps are the followings:
1. Specify cross-sectional properties (elastic Young modulus andcross sectional area).
2. Prescribe the nodes constituting the structure.
3. Connect the appropriate nodes by line elements.
4. Apply loads on nodes.
5. Decrease the degrees of freedom by nodal supports (rollers areinclined at a user specified angle from the horizontal, fixedhinges are two non parallel, possibly perpendicular, rollers at thesame node).
6. View the structure to check for any staticalindeterminacy.
7. Solve the linear system.
8. View the results summarized in a list: nodal displacements,nodal loads, reaction forces and element axial forces.
9. Visualize the results. Deformed configuration, elements undertension (red) and compression (blue).