News

SHEAR7 V4.11 – LATEST RELEASE

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SHEAR7 v4.11 - Latest Release

SHEAR7 v4.11 includes theoretical improvements, processing enhancements and bug fixes to improve various aspects of the SHEAR7 software, and is now available for download. Some of the highlights of this new version include:

  • Addition of a Varying Structure Damping “Stick-Slip” module for BETA testing
  • Distributed amplitude iterations for more accurate hydrodynamic lift and damping (previously known as “Beta Iterations”)
  • Optional stress time history output file

The v4.11 Academic License contains all changes above, including the new Varying Structural Damping “Stick-Slip” module for BETA testing, and is subject to the restrictions detailed in the v4.11 User Guide.

For more information on the SHEAR7 version release or academic licensing, please see the Development Path page, refer to the v4.11 User Guide, or contact the SHEAR7 Management Team directly.

To Download: If your license is current, you should have received an email with passwords and instructions on downloading this latest version. If you believe your license is up to date and you have nor received this information or would like more information on SHEAR7, please contact us.

SHEAR7 JIP and User Group Meeting 2021

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SHEAR7 JIP and User Group Meeting 2021

On Tuesday, March 2, 2021 AMOG hosted our first fully virtual SHEAR7 JIP and User Group Meeting. The day saw 30+ users join the meeting from all over North America, Europe, Colombia, and Australia.

Presentations were given by Prof Kim Vandiver, Craig Dillon-Gibbons, Victoria Ryan, Themis Resvanis and Liexin Ma.

It was a great opportunity for SHEAR7 Users to learn of updates that will be included in the next version of SHEAR7 software, v4.11, which is set to be released later this year.

SHEAR7 v4.10b

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SHEAR7 v4.10b

SHEAR7 v4.10b included bug fixes to improve various aspects of the SHEAR7.

Along with the sub-release of v4.10b came the offering a lease-based option for academic institutions interested in using SHEAR7 for non-commercial purposes. The Academic License lets users avail of the commercial program capabilities with minor restrictions.

For more information on the SHEAR7 sub-version release or academic licensing, please see the Development Path page or contact the SHEAR7 Management Team directly.

To Download: If your license is current you should have received an email with passwords and instructions on downloading this latest version. If you believe your license is up to date and you have not received this information, or would like more information on SHEAR7, please contact us.

SHEAR7 v4.10a – Latest Release

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VIV

SHEAR7 v4.10a

The latest version of SHEAR7 (v4.10a) includes a significant improvement to the modelling of spatially varying damping, resulting in a more accurate response prediction, particularly in regions outside of the excitation zone.

This release also resolves bugs relating to the reduced velocity bandwidth parameter and the required number of spatial segments.

For more information on the theoretical improvements, bug fixes, error handling, I/O handling, improved input validation, and command line options, please see the SHEAR7 Evolution and Development Path page.

To Download: If your license is current you should have received an email with passwords and instructions on downloading this latest version. If you believe your license is up to date and you have not received this information or would like more information on SHEAR7 please contact us.

SHEAR7 v4.8a has been released

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SHEAR7 v4.8a

SHEAR7 v4.8a was released in October 2014. 

SHEAR7 Version 4.8a contains a number of important enhancements to the existing SHEAR7 program:

  • Theoretical improvements including, new solution method for the lift and damping, a new hydrodynamic damping coefficient, selection of ID / OD for fatigue calculation and implementation of the universal c* damping parameter
  • Improved I/O data handling of error messages and output file formatting
  • Refactoring of the major parts of the source code carried out for improved readability, maintainability and simulation time
  • Regression test suite expanded both in breadth and quantity
  • Bug tracking and resolution features resolved
  • Example files increased to include Jumper VIV load cases
  • Added version control on input files

If you would like more information on this release please contact the SHEAR7 Team

SHEAR7 v4.9b Has Been Released

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SHEAR7 v4.9b

SHEAR7 v4.9b – released in April 2016.

SHEAR7 v4.9b contains a number of important enhancements and bug fixes to the existing SHEAR7 program:

  • The definition of Uf have been revised based on updated research findings. Uf is defined as RMS of the current speed in the power-in region for the excited mode.
  • Refinement of the convergence criteria applied to the beta iterations
  • SHEAR7 now supports the three Windows versions; Windows 7, Windows 8, and Windows 10
  • SHEAR7 is now compiled as a 64 bit program to improve memory allocation and overall performance

If you would like more information on this release, please see the Development Path page or you can contact the SHEAR7 Team.

SHEAR7 Version 4.9b User Guide has been updated

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SHEAR7 Version 4.9b User Guide has been updated

The SHEAR7 Version 4.9b User Guide has undergone some minor corrections to ensure consistency and minimise confusion. 

  • The description of Uf in Chapter 1.1.1 has been corrected to match the definition in later sections.
  • The equations relating to Bending Stress Curvature Loading Factor (BSCLF) have been revised to improve the understanding and implementation of this parameter.
  • Corrected the In-Line Parameters provided in Summary Table G3 to reflect the in-text description.
  • Provided further clarification on the default parameters for Higher Harmonics.

If you would like more information about this release, please contact the SHEAR7 Team.

SHEAR7 v4.7c – released

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SHEAR7 v4.7c - released

SHEAR7 v4.7c, a minor upgrade, has just been released with some new features and warning updates. We recommend all users upgrade to SHEAR7 v4.7c as soon as possible.

New feature 1
SHEAR7 v4.7c is also distributed with a regression test suite as part of our new focus on QA/QC. There are 164 test cases supplied. Users now have the option of confirming that their installation is successful and the operating system they are using produces the same results as the reference output. Instructions on how to run the regression test suite are provided in a readme in the regression test directory as part of the installation.

New feature 2
When running the program with the first mode inline excitation flag, the preliminary power estimation now uses A/D=0.15, and provides a more realistic estimate of the modal power at preliminary power calculation stage. The final power calculation is left uncharged.

Warning Updates
In some instances the program predicted negative power in for a mode, and the program stopped but didn’t provide the user with any information as to the results of the case. A new warning has now been added.

Bug Fixes
A bug on assigning segment properties has now been fixed. The bug occurred when segments were defined across zone boundaries. The bug was not present when segment and zone boundaries were coincident. This bug was not believed to effect users that created SHEAR7 files from Orcaflex or Flexcom.

The node at x/L=1.0 can report a zero damage value. This has now been fixed, such that if there is non-zero modal curvature at x/L=1.0 then there will be non-zero damage.

If your license is current you should have received an email with passwords and instructions on downloading this latest version. If you believe your license is up to date and you have not received this information or would like more information on SHEAR7 please contact SHEAR7.