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CTH

 

CTH Release Information

CTH is undergoing continual development at Sandia, but a new release version is distributed externally about once every year. New or upgrade requests during our development cycle will receive the current distribution code, not the most current internal version. Our current external release of CTH is Version 10.3 for government users and 9.1 for academic and commercial users.

Version 10.3 (February, 2013)

Usage notes for Versions 10.0, 10.1, 10.2 and 10.3:

In the EPDATA section, you will need to use new syntax for elastic-perfectly-plastic (Von Mises) and GEO yield properties:
 
  matep1 eppvm user yield=… poisson=…
  matep2 geo user yzero=… dydp=… yield=… poisson=…
 
instead of the old syntax:
 
  matep1 yield=… poisson=…
  matep2 geo yzero=… dydp=… yield=… poisson=…

And, as always, it is a good idea to pay attention to the FIRST error message you may get from CTH, especially when it is due to a syntax problem. Subsequent error messages are often not as useful for debugging your input.


Version History

CTH is influenced greatly by its predecessor codes, CHARTD, a one-dimensional hydrocode written by Sam Thompson in 1972 and CSQ, written by Sam in 1975. Development on CTH started in the late 1980's and continues to the present day. CTH was modified to run on massively parallel computers in 1992-1993 and was enhanced with parallel adaptive mesh refinement in 1998-2000. CTH versions prior to 7.0 were given descriptive names that typically included the month and year of the distribution. Below is a partial list of earlier versions and complete feature changes for versions after 7.0.

August '93
March '99
February '01
January '02
Interim '03 (July, 2003)
Version 7.0 (April, 2005)
Version 7.1 (December, 2005)
Version 8.0 (April,2007)
Version 8.1 (December, 2007)
Version 9.0 (February, 2009)
Version 9.1 (December, 2009)
Version 10.0 (January, 2011)
Version 10.1 (August, 2011)
Version 10.2 (February, 2012)

Version 7.0 (April, 2005)

Version 7.1 (December, 2005)

Version 8.0 (April, 2007)

Version 8.1 (December, 2007)

Version 9.0 (February, 2009)

Version 9.1 (December, 2009)

Version 10.0 (January, 2011)

Version 10.1 (August, 2011)

Version 10.2 (February, 2012)

 

Eric Harstad: enharst@sandia.gov