October 6, 2023. Release 183.7, Build 4295. Small cleanup/expansion of various messages generated during crack growth analyses by element deletion (Gurson and SMCS). No manual changes.

September 15, 2023, Release 18.3.7, Build 4290. Another set of improvements to the crack growth algorithms for solid elements. Improvements to GTN model and SMCS models. Improves global convergence. See Section 5.2 of manual for complete description of improvements.

July 15, 2023, Release 18.3.6, Build 4280. This is a re-issue of 18.3.6, Build 4270. Includes fixes, new features, manual documentation for crack initiation/growth using element deletion and SMCS criteria of various types. Manual Section 5.2 updated.

May 15, 2023, Release 18.3.6, Build 4270. Extensive updates for crack formation/growth using element deletion. Continued simplification across entire code. Updates to new compiler versions.

April 28, 2022. Release 18.3.3, Build 4240. Replace download .zip provided today. One change: an updated version of the file …run_windows/save_libiomp5md.dll needed for compatibility with newest Intel compiler.

April 25, 2022. Release 18.3.3, Build 4240. No known issues at this time.

September 27, 2021. Release 18.3.1, Build 4210. Introduction of distortion metrics during crack growth by element deletion. Based on concepts from Oddy, the increasingly severe deformations elements ahed of the crack front are tracked. If a user-specified distortion limit is exceeded (Oddy metric), the element is deleted from solution before the next load step. Section 5.2 has been fully re-written.

May 22, 2021. Release 18.3.0, Build 4200.Major new capabilities for mesh regularization during simulations of ductile crack growth. Several options are provided to reduce dependence of solutions on mesh size. To be used with the SMCS model to trigger element deletion process. Minor enhancements, bug fixes and continuing code modernization. Builds now use Intel Fortran 2021.2 on Linux and OSX. Windows remains at Intel fortran 2020.4. See Revision History linked on About page.

November 11, 2020. Release 18.2.3 Build 4140. Bug fix and cleanup. No new features.

September 15, 2020. Release 18.2.3. Build 4120. Adds support for the Abaqus compatible user routine SIGINI to define element initial stresses at t = 0.

August 25, 2020. Release 18.2.3. New feature to process secant definition of temperature dependent thermal expansion coefficients. New material property alpha_zero to set the reference value at which alpha values were measured. Roll up of big fixes and code cleanup.

July 4, 2020. Release 18.2.1. This release features major changes to several support programs. The warp3d2exii program has been converted to Python 3 from Python 2.7. The former Bash shell scripts to drive execution of the verification problems (run…bash) are replaced by Python 3 programs (run…py). This change makes the same programs work equally well on Windows, Linux, MacOS. All the QuickStart documents and several Workflow documents are updated. Minor code improvements and bug fixes. See Revision History.

February 15, 2020. Release 18.2.0. This is a rollup release of accumulated new features, bug fixes, code cleanup and documentation improvements. Support for gfortran on OSX is downgraded to experimental status. Setting up a working library environment on OSX with needed OSX, gfortran, gcc, Intel MKL, .. libraries on different OSX releases has become far more difficult than expected. Using the OSX executable built with Intel Fortran + Intel MKL presents no issues. Re-building of executable using the Intel tools present no difficulties.

July 25, 2019. Release 18.1.8. This is a bug fix and cleanup release. Last release with significant new features is 18.1.6. At 18.1.8, the executables built with the Intel Fortran compiler now use the instruction dispatch feature. During WARP3D execution on specific computer hardware, the fastest instructions available on the processor(s) are used automatically. This eliminates the need to support multiple executables to support older processors. The minimum instruction set is Ivy Bridge which appeared in Intel processors in 2012.

The gfortran executables use -march=ivybridge for maximum processor compatibility. Better performance is possible by recompiling on newer computers with the -march=native option.

More details in the Quickstart slide sets.

March 28, 2019. Release 18.0.0. Contains a few new modeling capabilities and documentation changes summarized in the Revision History. A major change in the code structure and build process: the free GNU gfortran may be used to re-compile the source code on Linux and MacOS. The WARP3D distribution contains the now free files needed from the Intel MKL library (including the Pardiso solver). Intel Fortran can still be used on Windows, Linux, MacOS to gain improved performance. Intel fortran remains required for Windows at present.

September 2018. Release 17.9.1. This release has the major new capability to compute J-integral values in the presence of complex residual strain-stress fields. Numerous other smaller improvements have been included. See Revision History for the complete list including updates to the manual.