CAE/CAM Software - CAE Software - CFD 3D Axial Stress Analysis
CAE 3D Axial Stress Analysis
Parametric modeling for insertable and integral blading
Detailed fir tree modeling options
Direct link to AXCAD for blade shape and aerodynamic loads
Blisk modeling for stress and vibration
Stable and accurate structural grid
Intuitive graphical user interface
AXISTRESS™
This 3D stress analysis program provides flexible parametric modeling of axial blades for compressor, fan, and turbine geometries, as well as for fast grid generation for FEA solvers.
Modeling
Detailed solid models with high-quality structured meshing, boundary conditions, aerodynamic loading, and probabilistic material models permit a wide range of centrifugal and mixed-flow designs. The geometry includes platform, fir-tree, shroud, blade, and fillets. AXISTRESS also provides complete model generation with nodes, elements, materials, loads, and boundary conditions.
Aerodynamic mapping
Aerodynamic loads must be included when accurate answers are desired for many compressor and turbine analyses. AXISTRESS will import fluid velocity, pressure, temperature, and properties from AxCent® or PushbuttonCFD® results. Combined with user definition of the pressure and fluid temperature on platform and shroud, the program computes convection heat-transfer coefficients for flow path, platform, and shroud.
Geometry
Blade fillets are modeled with a detailed structured mesh. The fillet can be circular or elliptical, with fully varying size. Fillet mesh density is fully controllable. Geometry is input with parametric definition of key dimensions. Contoured shroud, platform, and blisk profiles can be defined. Numerous geometry options are available for offset platforms, fir-trees, locking pins, feather seals, and more. Mesh density settings can be adjusted for optimum element shape and size. Mesh quality can be inspected with built-in aspect ratio and element angle checking.
Setup
Material properties are selected from a Microsoft Access® format database. While properties for common engineering materials are provided, the user can update and add to these materials and set the read/write permissions for the database. Boundary conditions (structural and thermal) can be set for a variety of bore conditions, and cyclic symmetry models can be setup to solve for stress, vibration, and modal cyclic symmetry.
Results
The generated single-blade mesh is used to perform mass and inertia calculations. The volume, mass, moments of inertia, and center of gravity are determined, and scaling is provided to get model properties for the entire stage.
Postprocessing functions allow the program to read output files from the FEA solver. Functions that are common to turbomachinery analyses include:
- Cyclic stress (Goodman diagram)
- Blade vibration (Campbell diagram)
- Interference diagram
New FEA solver
Concepts NREC’s new FEA solver is embedded in the AXISTRESS / AxCent package for fast and accurate calculations of stress levels. High-quality plotting and tabular output of the solver results provide the user with an efficient means to evaluate the stress level early in the design process. The solver provides highly accurate and fast results at a fraction of the price of most commercial packages.
AxCent and PushbuttonCFD are registered trademarks of Concepts ETI, Inc.
AXCAD, AXIAL, and AXISTRESS are trademarks of Concepts ETI, Inc.
Microsoft Access is a registered trademark of Microsoft, Inc.
