Z88Arion Z88Arion® identifies the graphical user interface for a structural optimization program based on the finite-element-analysis software Z88, whose solver kernels are developed by Prof. It is are freeware software project and can be downloaded. At the moment it is possible to use three different algorithms for. Z88Arion® has a comfortable graphical user interface plus powerful solver kernels, which help minimizing the initial training effort as well as the required calculation time and ensure ease of use.

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Z88Arion® basically consists of three parts: preprocessor, solver and postprocessor. In the following, you can learn more about these divisions and look at some screenshots of the software. Import Geometry: • STEP files (*.STP) • STL files in ASCII- and binary-format (*.STL) Import FE structures: • NASTRAN (*.NAS) • ABAQUS (*.INP) • COSMOS (*.COS) • Z88 projects (z88i*.txt) FE model generation: • Two freeware meshers for tetrahedrons: • (WIAS Berlin) • (TU Wien) • One adaptive tetrahedral mesher for existing tetrahedron-structures (linear) • One mapped-mesher for superelement-structures (Hexahedrons) • A picking tool which helps to select nodes and elements easily in order to link surfaces to boundary conditions, material properties, etc.

• An editable and expandable material database consisting of 50 predefined materials • Definition of boundary condition via the graphical user interface (e.g. By picking a node) • Different kinds of boundary conditions: • Forces in all directions • Displacements in all directions • Line and surface loads (also projected) • Pressure, both in positive and negative direction to the element surface • Fix-Sets.

The solver calculates iteratively – depending on the chosen method – the optimal stiffness or the optimal combination of stiffness and stability in compliance with the given restrictions. You can choose between the following optimization algorithms: • OC method: optimization for minimum compliance respectively maximum stiffness • SKO method: optimization for maximum stability • TOSS method ( Topology Optimization for Stiffness and Stress): optimization for minimum compliance in combination with maximum stability As results you get the optimal material distribution in the design space, the compliance and – for the TOSS method – the equivalent stress per element. Further info can be found in the of Z88Arion®.