CAE Modeling and Pre/Post Processing
Designers, engineers, and CAE analysts tasked with creating and analysing virtual prototypes are faced with a number of tedious, time-wasting tasks. These include CAD geometry translation, geometry clean-up, manual meshing processes, assembly connection definition, and editing of input decks to setup jobs for analysis by various solvers. Pre-processing is still widely considered the most time consuming aspect of CAE, consuming up to 60% of users’ time. Assembling results into reports that can be shared with colleagues and managers is also still a very labour intensive, tedious activity.
Patran provides a rich set of tools that streamline the creation of analysis ready models for linear, nonlinear, explicit dynamics, thermal, and other finite element solvers. From geometry clean-up tools that make it easy for engineers to deal with gaps and slivers in CAD, to solid modelling tools that enable creation of models from scratch, Patran makes it easy for anyone to create FE models. Meshes are easily created on surfaces and solids alike using fully automated meshing routines (including hex meshing), manual methods that provide more control, or combinations of both. Finally, loads, boundary conditions, and analysis setup for most popular FE solvers is built in, minimizing the need to edit input decks. Patran’s comprehensive and industry tested capabilities ensure that your virtual prototyping efforts provide results fast so that you can evaluate product performance against requirements and optimize your designs.
Patran contains an advanced set of geometry creation tools in addition to the direct CAD access capabilities for generating finite element model geometry. Patran’s finite element modelling system permits the user to directly access model geometry and to quickly develop finite element meshes for surfaces and solids. With direct access, geometry remains intact in the original format and is imported into Patran database without any translation or modification. Support for many industry-standard geometry exchange formats is also provided. An option is available for direct import into Parasolid format for several CAD systems and exchange formats. All finite elements, loads, boundary conditions, and material properties can be associated to the geometry.
Patran has sophisticated feature recognition capabilities that allow users to delete or edit holes, fillets, and chamfers. For 3D solid geometry, existing meshes and loads will be automatically re-applied to the model after a change is made to the geometry.
Manual preparation of input decks to be used with various FE solvers is a tedious and time consuming task. Patran supports complete preprocessing and postprocessing for MSC Nastran, MD Nastran, Marc, Abaqus, LS-Dyna and Pam-Crash, eliminating wasted time and effort.
Patran displays analysis results for structural, thermal, fatigue, fluid, magnetic terms, or in relation to any other application where the resultant values are associated with their respective finite elements or nodes. Imaging encompasses the complete graphics capability found within the Patran product, including graphic shading and visual verification prior to analysis. Imaging features a number of options that take advantage of specialized hardware capabilities, including local view manipulation, local shading, multiple light sources, and transparency. You can also export images and movies in many standard formats to include in documents and web-based reporting.
Patran Command Language (PCL) is the programming language at the heart of Patran. PCL is a high-level, block-structured language that provides many features found in traditional programming languages. It can be used to write application or site-specific commands and menus, perform variational modelling, and to more completely integrate with commercial or in-house software programs.
D2S International offers consultancy services using finite element software from HEXAGON (MSC Software).