Endurica has NEW MOVES!

Haigh Diagram Improvements + Additional Improvements – Release 2023-0601

Endurica CL now uses multithreading to quickly create high resolution Haigh diagrams. The Endurica Viewer can set axis limits for Haigh diagrams, and has improved plotting to create a smoother contour plot.

Haigh diagram graphic before 2023-0601 release Updated Haigh diagram graphic output
  • Endurica Viewer also has a new screenshot button to create png image files of your plots
  • Endurica EIE now supports the case vector map type up to 6 channels (previously only up to 3 channels was supported). EIE can also now read RPC III file formats as load history files.

License Queueing – Release 2023-0401

Supporting the need to efficiently manage and execute jobs, Endurica’s License Queueing function enables submitted jobs to automatically wait to start until enough licenses are available. More details in this blog post.

Katana Additions – Major Release 2023-0301

The Endurica software has seen significant enhancements centered around the new fatigue solver, Katana, affecting all our major products: Viewer, EIE, DT, and CL.

Endurica Viewer received many new visualizations when reading a Katana output file. These include:

  • Crack size calibration plots
  • Fatigue life sphere contour plot (formerly known as “damage sphere”)
  • Strain plots for engineering and logarithmic strain (for both 6-component and principal strain output)
  • Stress plots for engineering and Cauchy stress (for both 6-component and principal stress output)
  • Crack growth rate material analysis plots
  • Stress-strain material analysis plots
  • New data table button to view chart result values as numbers in a table

Endurica EIE is now able to read Katana files as data sources for the EIE map. This enables users to work entirely with Katana file formats. EIE received the ability to read both Katana JSON files as well as Katana database files.

This was also the time to bring all of Endurica DT’s features over to the Katana architecture. Katana can now restart previously executed fatigue analyses, which enables our co-simulation workflows like cyclic softening, ageing, and self-heating. All of these workflows have been ported over to the Katana architecture, and supporting files are included in the software installation package.

Katana’s Endurica CL received improvements to memory management to reduce memory consumption and improve runtime, and a new “residual strength” output has also been added.

With all these additions and enhancements, the Katana architecture is now being strongly recommended for all new and existing software users.

Katana Additions – Release 2022-0901

Block cycle analysis feature added for Katana which enables you to schedule multiple blocks of loading in a single job. Added Haigh diagram for Endurica Viewer plus support for axisymmetric models in both Ansys and Marc (Hexagon).

Katana Additions – Releases 2022-0601, 2022-0502

Memory management, executive speed PLUS the ability to model a transient thermal history. You can now have both strain and temperature varying in time in your fatigue model.

Documentation Update: Release 2022-0501

You asked for it, you got it! We’ve been working to strengthen our user manuals and, along with general improvements, we are excited to bring you updated instructions for Mullins Effect and our Ageing workflow.

Katana – Release 2021-0904

The only way to stay ahead of technology is to create the next big thing. That is what we began in 2008 with Endurica CL and what we are doing again, starting with the 2021-0904 release. The September 2021 update is JUST THE BEGINNING of Endurica’s change from our legacy fatigue solver to a fatigue solver with a completely new architecture. We began working on this major change in 2017 using the internal code name “Katana” after the finely-crafted curved, single-edge sword which was the Samurai’s primary weapon of battle. We are excited to release the initial version of our Katana solvers. Our Fatigue Ninjas will enjoy many competitive advantages by wielding it.

Note that all releases since September 2021 include the Katana fatigue solver in addition to the legacy fatigue solver.

Users who receive new software releases will now have both the legacy Endurica solvers and the new Katana-architected solvers. Both solvers will continue to be provided while features are being ported over to Katana. The long-term plan is for the Katana solver to eventually replace the Endurica solver.

What makes Katana the next big thing?

The Endurica solvers are completely rearchitected to enable multi-threading. This means that jobs of virtually any size are now distributed across as many CPUs as your computing hardware allows.  Our benchmarks have shown excellent scaling behavior beyond 48 threads. The Katana architecture also implements input and output files following the widely used JSON standard making integrations into scripted workflows like Python or Matlab easier than ever. We also invested heavily in optimizing the code, and even without leveraging the new multi-threading capabilities, you will notice significant execution speed improvements. Another exciting new feature is Endurica’s Safety Factor which is a simple way to analyze whether your application operates above the intrinsic strength of your material.

Endurica’s mission is to provide the world’s most comprehensive tools and workflows for fatigue analysis of elastomers. Earlier this year we received the United States SBA Tibbetts Award which is reserved for the best of the best in technology research and development. The Katana solvers are the next generation which further embody the entrepreneurial spirit and scientific excellence this award represents. The only way to stay ahead of technology is to create the next big thing.

Release # 2020-0101 Release #2021-0101
The full cadre of solutions, Endurica CL, DT, and EIE are now available for the Linux operating system. We’ve opened the Window to empower more firms to integrate our proven solutions to Get Durability Right.

Release #2020-1001

Ageing Simulation for Elastomers

The October 2020 release of Endurica’s durability simulation software features a new capability to define ageing behavior for a material, and to calculate the effects of heat exposure history on part durability“This is a feature that was developed and validated over the last few years in partnership with one of our Tier 1 automotive OEM users,” notes company founder and president Dr. Will Mars. “It has been used extensively for an application where long-term exposure to high temperatures was leading to early part failures.”

Simulation with aged N=16320 ad Unaged N=766600The new ageing feature lets users define tabular master curves that define the evolution of key material properties such as stiffness, critical tearing energy, and intrinsic strength (ie fatigue threshold).  The simulation uses the Arrhenius law to calculate relative ageing rate as a function of temperature, and it then integrates to find equivalent exposure time for each element in the finite element model.  The simulation captures time-dependent changes in the fatigue crack growth rate law.  It can also be coupled to a finite element solver to update stress and strain fields during the solution.  Two new outputs for each element are included with the ageing feature: age-equivalent time, and age-influenced stiffness.  As always, the fatigue life distribution can also be output to determine the shortest-lived element.

The new release also includes a file encryption feature that allows users to share all or part of the simulation input without giving away details like material properties or specific load cases.  It also includes a binary-formatted input file that can speed up read/write time by a factor of 8, as well as improvements to the EIE interpolation engine.

Release #2020-0309

Endurica 2020 Durability Analysis Software Release (March 2020)

 New analysis features, improved user experience, and execution speed improvements

Our 2020 Software Release will delight users by providing updates to all of Endurica’s software products (CL, DT, and EIE).  It includes new analysis and visualization capabilities, as well as execution speed enhancements.

The release includes a new tool, the Endurica Viewer. Endurica Viewer is now provided with the Endurica CLTM license.  It provides a graphical, interactive visualization of analysis results, making it easier to diagnose and optimize fatigue performance.

Endurica CLTM also features new tools for dealing with lengthy load signals.  New capabilities include a signal defeaturing tool for removing non-damaging load history segments from further analysis, and a new binary file format that reduces file size and read time.  Also, interfaces to the latest releases of the popular finite element codes Abaqus, Ansys and MSC/Marc are included.

The Endurica DTTM solver now features a new damage extrapolation capability.  After accumulating damage from all load cases in a block cycle schedule, the extrapolation feature calculates the number repeats of the entire schedule that can be endured.

The Endurica EIETM nonlinear load mapping tool now also supports multi-threading and the binary file format.  In one benchmark, it gave a speed advantage of more than 10000 times over the direct finite element solution method.

“We are continuing to invest strongly in the Endurica tools,” notes Endurica founder, Will Mars, Ph.D., P.E. “Our user base has been expanding to include a wider range of user background and experience. So our workflows have evolved towards greater simplicity, greater interactivity and greater flexibility.  At the same time, our most experienced users are running jobs with growing scope and complexity.  Our 2020 release is our most polished and capable yet, and it will delight the users.  Expect to see full road loads being used to design rubber parts on a routine basis.  Expect to see more product development programs that get durability right the first time.  Expect to see more light weighting and sustainable materials programs completed successfully.”

Call us at 419-957-0543 to schedule your demo or email

Endurica CL, Endurica DT, Endurica EIE

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