NX Advanced FEM Fact Sheet - Siemens PLM Software - #2

fact sheet

NX

Features

Unique and powerful geometry manipulation and abstraction tools

•Fully associative CAD modeling tool set for feature removal and idealization

•Automatic CAE abstraction tools based on desired element size that further refine the geometry to ensure high quality mesh gener­ation with limited user interaction

CAD interface support for Parasolid® JT, STEP and IGES data formats

Intuitive interface with the Simulation navigator for quick and easy access to FE data entities

Complete material definitions support for isotropic, anisotropic and orthotropic materials

Material catalog with 60 predefined materials

Complete set of load and constraint definitions to support a wide variety of solutions

Support for NX Nastran desktop and enterprise solvers

Support for additional CAE solutions for fluid flow analysis, advanced thermal analysis, advanced durability analysis and design optimization

Support for a variety of external third-party solvers through a unique environment selection based on PLM XML that enables custom­ization of the UI to match the selected solver for element definition through solution setup

Integrated design parameter-based optimization

• Advanced FEM also supports the new NX Thermal and NX Flow solutions

• NX Thermal is a fully integrated finite difference solver. It allows thermal engineers to predict heat flow and temperatures in systems subjected to thermal loads.

• NX Flow is a computational fluid dynamics (CFD) solver. It allows analysts to perform steady-state, incompressible flow analysis and predict flow rates and pressure gradients for movement of fluid in a system.

When used in combination, NX Thermal and NX Flow provide fully coupled treatment of convective heat transfer, enabling robust simulation of conjugate heat transfer problems.

FE modeling tools

Wireframe, surface and solid geometry from other CAD systems can be accessed through embedded standards-based interfaces (IGES, STEP AP203, STEP AP2I4, Parasolid and JT) or optional direct CAD interfaces for Catia and Pro/Engineer. A complete set of geometry creation and modification tools is provided to work directly with native and non-native geometry. Often design geometry must be modified to build an effective model. Details may need to be suppressed or eliminated, additional geometry may be required to control mesh density; or surfaces not present in the geometry may be needed for meshing. A complete set of idealization tools is provided that works directly on native or non-native geometry. History support or association is not required.

NX Advanced FEM provides extensive model editing capabilities, including the ability to:

• Interactively suppress features defined within the NX part

• Perform sensitivity analysis using design parameters as defined in the CAD model

• Remove fillets and holes automatically using the idealize command set on both native and non-native geometry

• Add, modify or delete entities (sheet body, solid body)

• Extract the mid-surface representation directly from the solid body for modeling thin walled components; surface thickness is mapped from the solid to the 2D representation

• Automatically support the relationships between the component CAD model and the FE model within NX Manager and Teamcenter

Abstracting CAD for FE meshing

Often CAD topology contains details that are of no use to the analyst. Sliver surfaces, detailed embosses (e.g., "Made in U.S.A."), small fillet radii and small holes are examples of details the analyst may not wish to mesh. There are multiple tool sets to abstract and idealize the geometry for model preparation.

Idealize commands are provided to allow the user to remove and suppress design features like holes and fillets. This can be done on NX native or non-native 3D CAD geometry. This set of powerful tools allows the user to change the design geometry without the need to own the original geometry.

Abstraction commands are provided in the FEM for removal of design artifacts such as sliver faces, small edges and isthmus conditions. It does not remove the actual design features but rather allows for the removal of geometry artifacts that affect the overall quality of the mesh. This set of commands