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.

March 2013 SHEAR7 Training Course – Applications Closed

Applications to attend the March 2013 SHEAR7 and VIV training course in Houston, TX have now closed.

Course numbers are limited.  If you would like more information about SHEAR7 and our training courses, please contact us. Applications to attend the March 2013 SHEAR7 and VIV training course in Houston, TX have now closed. Course numbers are limited. If you would like more information about SHEAR7 and our training courses, please contact us.


The SHEAR7 2013 UGM will be held on the 5th March in Houtson, TX, USA for all JIP Members and User Group Members.

JIP Members are invited to attend a brief meeting before the full JIP and User Group UGM.

Presentations and topics for discussion will include a research update, recap of new features, future development plans and enhanced features, as well as a User Modelling example case study demonstration on rigid seabed jumpers.

Please RSVP before 28th February.

If you would like more information, please contact SHEAR7 via our website.

March 2013 Training – Bookings now open

MiT and AMOG are pleased to announce that we have confirmed the next Vortex-Induced Vibration (VIV) and SHEAR7 2-day interactive course in Houston, TX, U.S.A. on the 6th-7th March 2013.

The course is designed to be both an introduction to the subject matter as well as cover the latest design practices and challenges to refresh your skills.

Please note that places are strictly limited.

To request a copy of the course flyer (including location details and costs) and a registration form, please contact SHEAR7.

SHEAR7 Version 4.7 will launch September 15th 2012

AMOG is pleased to announce SHEAR7 Version 4.7 will be launched on 15th September 2012.

The upcoming Version 4.7 includes the following new functions and enhancements:

  1.  Pure in-line VIV analysis for rigid seabed spools and jumpers, pipelines and umbilical spans
  2.  A new optional bending stress-curvature loading factor
  3. Improved umbilical and unbonded flexible riser VIV fatigue calculations
  4. Fatigue calculations for individual components in the structure
  5. Stress output file for each mode’s stress response
  6. A new optional zero-crossing fatigue calculation
  7. Optional use of unique structural file naming for importing.
  8. Improved error messaging.

SHEAR7 Version 4.7 will be distributed automatically to all current SHEAR7 User Group Members and SHEAR7 JIP members.

If you have any questions about SHEAR7 Version 4.7 or you are not currently using SHEAR7 but would like more information, please contact us.