• BEAM CROSS SECTION using SURFACE with REFERENCE POINT on FEMAP

En FEMAP desde hace varias versiones tenemos disponible una utilidad muy interesante para generar las propiedades de la Sección Transversal de elementos 1-D tipo viga CBAR/CBEAM a partir de la geometría CAD 3-D Sólida que permite crear el  PUNTO DE REFERENCIA a la vez que seleccionamos la superficie correspondiente a la sección transversal de la viga sobre la geometría CAD 3-D. Para que se active esta opción durante la creación de la Sección Transversal  de Vigas deberás seleccionar en FEMAP tanto el método Standard como Shape = General Section.

beam-cross-section-definition

El Punto de Referencia sólo se usa cuando se asignan los atributos de mallado a curvas usando la orden Mesh > Mesh Control > Attributes along Curve, siendo una manera cómoda de definir automáticamente el #OFFSET del centro de cortadura en secciones no simétricas.

mesh-attributes-along-curve

Aquí os dejo un vídeo explicando las ventajas de utilizar el PUNTO DE REFERENCIA a la hora de prescribir los attributos en curvas para mallar con elementos CBAR/CBEAM. Se trata de un ensamblaje de Aluminio 6066 (T6) compuesto por una placa de espesor 2.5 mm reforzada con perfiles tubulares de dimensiones 25x15x2.5 mm que se desean mallar con elementos 1-D viga CBEAM.

dimensiones-modelo

Se crea la superficie media de la placa para mallar con elementos 2-D Shell CQUAD4.

midsurface

Modelo final con la placa mallada con elementos 2-D Shell CQUAD4 y las vigas malladas con elementos CBEAM. La curva utilizada para mallar las vigas es la misma curva de la superficie media, por tanto los elementos CBEAM comparten nodos con los elementos CQUAD4. La clave está en utilizar como REFERENCE POINT el punto situado en la curva de la superficie media.

malla-shell-beam

Y aquí tenéis el vídeo con el ejemplo explicado paso-a-paso:

Saludos,
Blas.

Datos de Contacto de IBERISA (Spain)

Nuevo FEMAP V11.2.2 (Septiembre 2015)

Los chicos de FEMAP nos sorprendieron el pasado 9 de Septiembre 2015 con el anuncio de una nueva versión de FEMAP V11.2.2 disponible para descarga desde el servidor FTP de SIEMENS PLM en http://www.plm.automation.siemens.com/es_es/support/gtac/

FEMAP V11.2.2 resuelve varios problemas pendientes desde FEMAP V11.2 y FEMAP V11.2.1, a la vez que incluye actualizaciones y mejoras, por tanto es muy importante y recomendable que todos los usuarios V11.2 y V11.2.1 instalen la nueva versión V11.2.2 lo antes posible.

FEMAP V11.2.2 es 100% compatible a nivel de licencia y base de datos con V11.2 y V11.2.1

FEMAPV1122

FEMAP V11.2.2 New Features and Corrections

Updates and Enhancements

1.- Connection Properties, Regions, and Connectors

  • Added the ability to copy Connections when using the Mesh, Copy…or Mesh, Rotate commands when the “Mesh Sizes, Loads, Constraints…” option is enabled and if both associated Connection Regions are also copied.

2.- Interfaces – LS-DYNA

  • Added “Max Matrix Strn DFAILM” and “Max T Shear Strn DFAILS” fields to Material Type “54..LS-DYNA Enhanced Composite Damage”, which write the DFAILM and DFAILS values for the *MAT_ENHANCED_COMPOSITE_DAMAGE entry.
  • Added “R Rot Constrained (1=Yes)”, “S Rot Constrained (1=Yes)”, “T Rot Constrained (1=Yes)”, “CST (0,1 or 2)”, and “SCOOR (-3 to 3)” fields to Material Type “71..LS-DYNA Cable Discrete Beam”, which write the RRCON, SRCON, TRCON, CST, and SCOOR values to the *MAT_CABLE_DISCRETE_BEAM entry.
  • Added “CST (0,1 or 2)”, “SCOOR (-3 to 3)”, “R Rot Constrained (1=Yes)”, “S Rot Constrained (1=Yes)”, and “T Rot Constrained (1=Yes)” fields to Material Type “93..LS-DYNA Elastic 6DOf Spring Discrete Beam”, which write the CST, SCOOR, RRCON, SRCON, and TRCON values to the *MAT_ELASTIC_6DOF_SPRING_DISCRETE_BEAM entry.

3.- API

  • Updated feSolidRemoveRedundantPoint to make it more useful when cleaning up imported CAD geometry where vertices that simply should not be relevant can now be removed.
  • Added support for Boundary Surfaces in the API Entity Tracking object.

Corrections

1.- Analysis Manager

  • Corrected an issue with regard to Load and Constraint Sets in Subcases after Groups were renumbered. Previously, if any Load Sets or Constraint Sets selected in Subcases had the same ID as one of the Groups that was being renumbered, those Load/Constraint Set references were renumbered.
  • Corrected an issue with regard to Groups used to limit entities when making output requests after Groups were renumbered. Previously, references to groups for any Output Selections in the Analysis Manager Subcases were not renumbered.
  • Corrected an issue with regard to the Contact Group in the Boundary Condition dialog box after Groups were renumbered. Previously, the Contact Group reference in Analysis Manager Master Case or Subcases was not renumbered.
  • Corrected an issue with regard to renumbering Load Sets. Previously, if the renumbered Load Sets were referenced in one or more Analysis Sets as the Temperature Set selection in either the Master Case or Subcases, or as the Bolt Preload Set in Subcases, the reference still contained the original Load Set ID.

2.- Performance Graphics

  • Corrected an issue where nodal and elemental thermal loads would cause FEMAP to become unresponsive.
  • Corrected an issue where function IDs for loads were not drawn correctly if in component display mode.
  • Corrected an issue when curved beams drawn with large radii were not drawn properly.
  • Corrected an issue where nodal loads being displayed as components were not being shown in the proper orientation.

3.- Connection Properties, Regions, and Connectors

  • Corrected an issue in generation of Automatic Connections that in a few cases caused coincident faces to be missed when using detection strategies that were more aggressive than the defaults.

4.- GUI – General

  • Corrected an issue which caused “Smart Snap” snap mode to not allow selection of the midpoint of a curve or center point of a curve when the graphics window was displaying a single group or multiple groups.

5.- GUI – Dockable Panes

Meshing Toolbox – Mesh Surface Tool

  • Corrected an issue in the that caused the Mesh Surface tool to resize and remesh surfaces that had not been selected.

Model Info Tree

  • Corrected an issue that caused the Renumber command on the context menu of the Model Info tree to fail for Load Definitions and Constraint Definitions unless the definitions were in Load/Constraint Set 1.

Entity Info

  • Corrected an issue where a “\” character at the end of an Entity title or a “{” character or “}” character anywhere in an Entity title sent to the Entity Info window for any reason (typically during entity selection) could cause FEMAP to become unresponsive.

6.- Interfaces – NX Nastran

  • Corrected an issue where PARAM,WMODAL,YES would not be written for Nastran Response Spectrum Analysis (PR 8264897).
  • Corrected an issue when reading results for TRIA6 and QUAD8 elements in nonlinear analysis (SOL 601) that caused some Strain Invariant results to not be computed or calculated incorrectly.

7.- Interfaces – Nastran

  • Corrected an issue in XDB translator that could cause some Grid Point Force vectors to be skipped.
  • Corrected an issue in XDB translator that could cause Grid Point Force vectors to be incorrectly transformed when a local nodal output coordinate system was used.

8.- Interfaces – ANSYS

  • Corrected an issue which caused linear or parabolic tetrahedral elements to appear as linear or parabolic pyramid elements when reading elements from an ANSYS input file (*.cdb or *.ans) (PR7422995).
  • Corrected an issue which caused plane strain elements and axisymmetric elements to potentially be assigned a Material Orientation during import of an ANSYS input file.

9.- Interfaces – LS-DYNA

  • Corrected an issue where import of d3plot files for Japanese FEMAP was very slow (PR 7405411).

10.- Elements

  • Corrected an issue when using the Modify, Update Elements, Type command to change the “type” of selected elements from Plot Only Planar elements to Laminate Elements, which could cause FEMAP to exit unexpectedly.
  • Corrected an issue which caused CBUSH elements created in earlier versions of FEMAP, which had both an orientation Vector specified and referenced a Property which had an Orientation Csys defined, to have their “Orientation” set to “Vector” instead of “From Property” when brought forward into FEMAP 11.2 or 11.2.1.
  • Corrected an issue which caused CBUSH elements created in earlier versions of FEMAP, which had both a Node ID specified for orientation and referenced a Property which had an Orientation Csys defined, which would cause “Orientation” set to “Node” instead of “From Property” when brought forward into FEMAP 11.2 or 11.2.1.

11.- Loads and Boundary Conditions

  • Corrected an issue which caused Distributed Loads on line elements to not be visible in the graphics window when a Nastran LOAD Combination Load Set was either the Active Load Set or the Load Set Selected for display.
  • Corrected an issue when renumbering either Load Definitions or Constraint Definitions. Previously the definition IDs on the Loads/Constraints in the active Load/Constraint Set, not the selected Load/Constraint Set, were renumbered.

12.- Geometry

  • Corrected an issue where meshed surface(s) that were being extended were not being remeshed because the extended surfaces where being renumbered, thus not getting remeshed. A different approach is now being used which does not renumber the extended surface(s).

13.- Output and Post-Processing

  • Corrected an issue with transforming results that occurred if you attempted to transform into a coordinate system that did not exist. Previously this could happen if you renumbered coordinate systems. Now the coordinate system reference is properly renumbered and transforms are turned off if you specify a nonexistent system any other way (PR 7455476).

14.- Tools

  • Corrected an issue that occurred if you used the Tools, Mass Properties, Mesh Properties command and selected a coordinate system for the mass properties other than Global Rectangular and chose to create a node at the CG. Previously the CG was created at an incorrect location (PR 7457501).

15.- API

  • Corrected an issue which caused the return code for NextEmptyID, PrevEmptyID, NextID, and PrevID to be zReturnCode instead of “INT4” which matches the actual method return.
  • Corrected an issue in feSolidFillet and feSolidChamfer that caused both of these methods to fail.
  • Corrected an issue where FTO_PYRAMID13 enum was missing for the topology property of the Element Object.

Saludos,
Blas.

Datos de Contacto de IBERISA (Spain)

FEMAP V11.2.1 y NX NASTRAN V10.2

FEMAPV11_2_1-LOGO

Es un placer anunciar la disponibilidad para descarga de la nueva versión del software de pre/postprocesador de Elementos Finitos y Modelador Geométrico FEMAP V11.2.1 que incluye la nueva versión del solver de Análisis por Elementos Finitos NX NASTRAN V10.2 desde el servidor FTP de SIEMENS PLM en la siguiente dirección (se necesita una cuenta WEBKEY válida):

http://www.plm.automation.siemens.com/es_es/support/gtac/

Se ruega encarecidamente a todos los usuarios actuales de FEMAP V11.2 que descarguen e instalen lo antes posible la nueva versión del programa ya que corrige importantes errores (el problema con elementos CBUSH detallado en el SFB-FEMAP-9054) y además ofrece nuevas capacidades y mejoras adicionales en cuanto a prestaciones. La licencia actual de FEMAP V11.2 es 100% compatible con la nueva versión de FEMAP V11.2.1.

En la WEB del GTAC haz clic en “Carga y Descarga de Archivos” y tras introducir tu WEBKEY haz clic en PRODUCT DOWNLOADS y en la siguiente ventana vete a FEMAP > Full Products y la versión 11.2.1 la tienes disponible bajo Windows (64-bit Intel):

FEMAPV11_2_1-gtac

What’s New for FEMAP V11.2.1

User Interface

  • Added dynamic face highlighting during Element Face picking and enabled dynamic highlighting of elements in the Connection Region dialog if “Elements-No Faces” is selected.
  • Added “Plane Element Offset” as an option when using the “Model Data Value” option for “Pick^” in the standard entity selection dialog box.
  • Added a Cancel button to the “OK to Start New Model (No=Add to Current Model)?” dialog box which appears when you “drag and drop” an analysis model or geometry file into an open instance of FEMAP.
  • Updated the “Add Connected Elements” option for “Pick^” in the standard entity selection dialog box to dramatically improve performance.

Meshing

  • Enhanced performance significantly when using the “Mesh > Copy > Element”, “Mesh > Radial Copy > Element”, “Mesh > Scale > Element”, “Mesh > Rotate > Element” and “Mesh > Reflect > Element” commands to create copies of existing elements.
  • Enhanced performance significantly of the Mesh > Extrude commands to extrude elements, the Mesh > Revolve commands to revolve elements, and the Mesh > Sweep commands to sweep elements.

Aeroelasticity

  • Added support for randomizing colors of the various Aero entities when modifying the color.

Output and Post-Processing

Updated “View > Advanced Post > Contour Model Data” command to allow display of “Plane Element Offset” on planar elements.

Geometry Interfaces

  • The following FEMAP interfaces have been updated to support newer geometry formats:

FEMAPV11_2_1-parasolid-version

  • Enhanced support for importing geometry files from SolidWorks 2015 by implementing a newer version of the SolidWorks translator.

Analysis Program Interfaces

Several of the analysis program interfaces have been improved. These changes include   NX Nastran Interface and DYNA Interface. For details, see “Analysis Program Interfaces” in the FEMAP User Guide.

bolita_roja NX Nastran Interface

  • FEMAP with NX Nastran bundle now includes NX Nastran V10.2.
  • Added support for NX Nastran 10.2 Thermal and Mechanical Strain (op2 data blocks OSTR1ELC, OSTR1THC, OSTR1EL, OSTR1TH).
  • Updated default value for the “Solid Results in Material CSys” option in the “NXSTRAT Solver Parameters” dialog box in the Analysis Set Manager to be Off instead of On, which will write a 0 to the ELRESCS field on the NXSTRAT entry instead of a 1, which is the default value for NX Nastran.
  • A number of bugs were corrected.

bolita_roja DYNA Interface

  • Added “20..EQ 13: 1 point nodal pressure tetrahedron” as a formulation option for Solid elements to create ELFO=13
  • Updated “Memory (Megawords)” field in the LS-DYNA Analysis Control dialog box, which writes the *KEYWORD MEMORY entry, to allow values up to 99,999,999, as the previous limit was 2,147
  • A number of bugs were corrected.

OLE/COM API

bolita_roja New and modified API Objects and Attributes

  • Added NumberOfLoads and NumberOfConstraints properties to the API Node object

bolita_roja New and Updated API Methods

  • Added GetAllArray2 and GetCoordArray2 methods to Node Object (returns an extra Variant that indicates which nodes actually exist)
  • Added GetAllArray2 method to Element Object (returns an extra Variant that indicates which elements actually exist)
  • Updated the GetAllArray and GetCoordArray methods for the Node object to automatically zero all memory, so if you ask for entities that do not exist the values returned will all be zeroed
  • Updated the GetAllArray method for the Element object to automatically zero all memory, so if you ask for entities that do not exist the values returned will all be zeroed

bolita_roja The following functions have been added or updated:

  • feAppSetModel32 (method to supplement the existing feAppSetModel method for programming environments where 64-bit integers are not available)
  • feAppGetModel32 (method to supplement the existing feAppGetModel method for programming environments where 64-bit integers are not available)

Saludos,
Blas.

Datos de Contacto de IBERISA (Spain)

64.- Nueva Versión de FEMAP V11.2 (Marzo 2015)

FEMAP V11.2

FEMAP™ V11.2 es la nueva versión del modelador geométrico, pre- y postprocesador de Elementos Finitos más potente del mercado, disponible ya para descarga desde el GTAC. FEMAP V11.2 incluye también la última versión del solver NX Nastran V10.1.

FEMAP v11.2 contiene numerosos avances y mejoras solicitadas por la amplia base de usuarios de todo el mundo. Esta nueva versión introduce avances importantes en herramientas de modelado y edición de geometría con el fin de incrementar la eficacia y productividad de procesos como la creación de superficies medias, tan popular en FEMAP. También se ha añadido una nueva funcionalidad para organizar en estudios los resultados del análisis, logrando una mejora en la gestión de resultados y mayor rapidez para postprocesado de envolventes y animaciones múltiples. En la parte de postprocesado, se ha mejorado mucho la creación de diagramas de cuerpo libre (FreeBody) con una nueva opción “dinámica” que permite mover el plano de corte interactivamente visualizando la transferencia de cargas sobre la malla del modelo de elementos finitos. Finalmente, se ha mejorado y expandido mucho la arquitectura gráfica OpenGL 4.2 incluyendo soporte de mayor número de entidades, permitiendo al usuario crear modelos mucho más complicados y complejos.

1.- Descarga

Para descargar la nueva versión de FEMAP V11.2 entra en el Servicio de Soporte GTAC y utilizando tu WEBKEY Username/Password descarga el software. Desde el GTAC también debes pedir la actualización de la nueva licencia (Recuerda: FEMAP V11.2 requiere nueva licencia!!)

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FEMAP SYMPOSIUM 2014

FEMAP SYMPOSIUM 2014Un año más se ha celebrado con gran éxito a nivel mundial la segunda edición del “FEMAP SYMPOSIUM 2014” realizado los días 14, 15 y 16 de Mayo de 2014 en la ciudad norteamericana de Atlanta, GEORGIA (USA). Este tipo de eventos es un acierto total, un año de estos prometo acudir!!.

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CURSO DE ACTUALIZACIÓN A FEMAP V11.1

femap_curso_actualizacion Jornada gratuita donde se presentarán las principales novedades de la nueva versión de FEMAP V11.1 así como NX NASTRAN V9.0. Todos los usuarios de FEMAP están invitados a conocer lo último en tecnología de Mallado y Análisis por Elementos Finitos (FEM/FEA) con FEMAP V11.1 y la integración de la última versión del potente “solver” de análisis por elementos finitos NX NASTRAN 9.0. Continue reading

REQUISITOS HARDWARE DE NX NASTRAN (I)

Logo de NX NASTRANRecientemente en el Siemens PLM Community en la sección “NX Nastran Disccusion Forum” se ha publicado un documento muy interesante sobre los requisitos hardware del solver NX Nastran que me ha parecido muy interesante su difusión “literal” en este blog, ya que -aunque todo está en los manuales, recomiendo consultar el “NX Nastran Installation and Operations Guide“- siempre es importante compartir conocimientos, opiniones y experiencias entre usuarios.

Al final del artículo por mi parte comentaré qué parámetros y recursos están a nuestra disposición desde el entorno de FEMAP para controlar la “fuerza bruta” de NX Nastran: tenemos que aprender a manejar conceptos como “Nastran Keywords“, entender el contenido del fichero *.F04, conocer los diferentes tipos de “ejecutables” disponibles en NX Nastran (LP-64 vs. ILP-64), aprender cómo lanzar manualmente la ejecución de NX Nastran a través de una ventana de MS-DOS prescindiendo del entorno gráfico de FEMAP, etc.. En fin, espero que el artículo os resulte útil e interesante!!.

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