GiD

Nastran Interface

NASTRAN Interface is an application acting as a bridge between the pre/post processing program GiD and the most popular commercial NASTRAN codes.
NASTRAN Interface is designed to satisfy requirements of either high or low experienced users by introducing fast and easy to understand tools, as well as being capable to solve complex analyses.
NASTRAN Interface combines powerful GiD meshing and CAD geometry generation tools with one of the most popular and best functional Finite Elements code NASTRAN.
The easiness of NASTRAN Interface makes it a fast, comfortable, and versatile tool for almost any type of analysis.

Experienced users will find a powerful tool satisfying the highest level of demand and offering high level of automation of a problem data introduction.
Beginners will find an application with an easy and intuitive way to assign materials and conditions.

Characteristics

Supported elements: bars, triangular, quadrilateral, tetrahedral and hexahedral

Possibility to work with meshes with different element sets

Different local axes definition techniques

Linear Static Analysis

Natural frequencies of a structure

Dynamic Analysis with Transitient or Modal formulation

Generation of input files for: NEi NASTRAN, MSC.NASTRAN, NX NASTRAN

Isotropic materials

Fully integrated results postprocessor

Available for WINDOWS, LINUX and UNIX operating systems

Pre-processing

finite element model of an hull By using different tools in the pre-processing module of Tdyn you can define geometries typical for CAD systems like NURBS or COONS. The pre-processing module allows importing CAD archives into NASTRAN Interface that are saved in IGES, DFX, VDA or PARASOLID or other formats. To help the geometry definition process, NASTRAN Interface works with variety of CAD tools or visualizations options.

Once the geometry definition is finished, the problem data is entered into the same environment of NASTRAN Interface. With NASTRAN Interface you have the important control of the mesh generation by being able to change the size and quality of elements.

Data Definition

NASTRAN Interface saves your time by using semiautomatic data definition tasks. Materials and boundary conditions will be able to be assigned directly over geometry entities without previous mesh generation, which makes this process to be a simple and natural. This makes NASTRAN Interface to be non-dependent on the finite element model. This means, that if for any reason, the geometry have to be re-meshed, it will not be necessary to re-assign the conditions.
On the other hand, the option to assign conditions and materials to mesh elements is also available to satisfy all possible necessities of different users.

Obatin a NASTRAN input file

The process of obtaining an input file for NASTRAN codes is completely automized and only needs to define some of the problem paramters. Optimizaed algorithoms make this task very fast even for models with big number of elements.

Post-processing

NASTRAN Interface has multiple forms to import results form different programs including: FEMAP neutral format (*.neu), PUNCH format (*.pch). With these features, NASTRAN Interface makes it posible to pre/post-process a model in the same envarioment using multiple visualization techniques depending on the eligible interpretation of the model. Very useful are color maps, structure deformations drawings, graphic visualization of a stress in bars, reactions vectors, stress vectors, and many others.