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GTSTRUDL Upcoming Version 32 Release and Future Enhancements

Presentation Outline. Status of Version 32New Features in Version 32Future Enhancements. Status of Version 32. Beta testing scheduled for August.Documentation is in progress.Plan to ship in October.. Version 32. . DBX. WRITE CODE CHECK RESULTS has been added. This DBX file contains the same da

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GTSTRUDL Upcoming Version 32 Release and Future Enhancements

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    1. GTSTRUDL Upcoming Version 32 Release and Future Enhancements Dr. Kenneth M.(Mac) Will GTSUG 2011 June 2011 Delray Beach, Florida

    2. Presentation Outline Status of Version 32 New Features in Version 32 Future Enhancements

    3. Status of Version 32 Beta testing scheduled for August. Documentation is in progress. Plan to ship in October.

    4. Version 32

    5. DBX WRITE CODE CHECK RESULTS has been added. This DBX file contains the same data as found in the output from LIST CODE CHECK RESULTS. ASCII80 and BINARY sequential formats are supported.

    6. DBX Syntax: WRITE CODE (CHECK) (RESULTS) -(MEMBERS list) Examples: WRITE CODE ALL MEMBERS WRITE CODE RES MEMBERS EXISTING - 1 TO 1000

    7. DBX The WRITE CABLE FORCES command has been added to the DBX feature. This DBX file contains the normal stress, the corresponding normal force, and the three global element nodal reaction components at each node for all active static loadings. All documented file formats and access modes are supported.

    8. DBX (cont) Syntax: WRITE CABLE FORCES (MEMBERS list) Examples: WRITE CABLE FORCES ALL MEMBERS WRITE CABLE FORCES MEMBERS EXISTING - 1 TO 1000

    9. Dynamics The GT64MLANCZOS eigenvalue analysis solution method has been implemented, extending high-performance sparse-equation eigenvalue analysis to 64-bit computer platforms.

    10. Dynamics (cont) GT64MLANCZOS is the most powerful version of the GTLANCZOS family of eigenvalue analysis solution methods (GTLANCZOS, GTSELANCZOS, and now GT64MLANCZOS) presently available in GTSTRUDL and incorporates the following features:

    11. Dynamics (cont) The Lanczos iteration process employs an in-core, single processor version of the GT64M sparse equation solver. Multiple processors and out-of-core processing are not available in this initial implementation for Version 32.

    12. Dynamics (cont) All computations associated with the Lanczos iteration process take advantage of 64-bit addressing on 64-bit platforms, greatly increasing the number of degrees of freedom that can be treated and the number of modes that can be computed when compared to the GTLANCZOS and GTSELANCZOS methods. There is also a modest increase of solution speed when compared to the GTSELANCZOS method, but this becomes less apparent as the number of modes increases.

    13. Dynamics (cont) The GT64MLANCZOS method is activated when the GT64M option is specified by the ACTIVE SOLVER command: ACTIVE SOLVER GT64M or when the GT64MLANCZOS method is specified in the EIGENSOLUTION PARAMETERS command: EIGENSOLUTION PARAMETERS SOLVE USING GT64MLANCZOS

    14. Dynamics (cont) Example of problem run using GT64MLANCZOS which could not be executed using 32 bit eigensolvers: Dynamic DOF = 329,994 Number of Modes = 300 Total time to solve = 1,693 sec Total time to check solution = 182 sec Virtual memory used = appx. 6 GB

    15. Dynamics (cont) Modest efficiency and performance improvements have been made to the GTSES Lanczos eigenvalue analysis procedure (GTSELANCZOS). However, GTSELANCZOS remains a single-processor, 32-bit solver governed by 32-bit virtual memory allocation and addressing limitations.

    16. Finite Elements A new eight node solid element with incompatible modes will be available (IPSLIM). This element will offer substantially improved accuracy over the existing eight node solid element for structures with bending and shear deformation. The element will include all of the features currently available with the current eight node solid (IPSL) element.

    17. Finite Elements (cont) A new four node plane stress quadrilateral with three dof (including drilling dof) will be added – Q6CDRL A new four node moderately thick plate bending element will be added – PBMITC A new four node moderately thick plate element (stretching and bending) with 6 dof will be added - SBMITC = Q6CDRL + PBMITC

    18. General (cont) PRINT MEMBER LENGTH SORTED LIMIT v now prints the total number of members that meet the specified limit after the list of member lengths. This only applies to LIMITS with decimal numbers, which indicates a length value and where the number of members meeting the criterion is unknown, and not to LIMITS with an integer number, which indicates a specified number of member lengths to print.

    19. General (continued) Example: { 4367} > UNITS CM { 4368} > PRINT MEMBER LENGTH SORTED LIMIT 20.0 (output omitted) **** INFO_PRTMBL - Found 10 members < 20.000

    20. General (continued) A new option has been added to the PRINT command, PRINT MEMBER BETA ANGLES, which allows you to print only BETA angles, without the other CONSTANTS. The command syntax and a few examples are shown on the next slide.

    21. General (continued) Syntax: Examples: PRINT MEMBER BETA ANGLES NONZERO ONLY - TOLERANCE 0.1 DEGREES PRINT MEMBER BETA GROUPED COMMAND -FORMAT

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