ESRD’s flagship software product, StressCheck®, is an advanced FEA tool having numerous unique technical capabilities and inherent structure to support verification and validation (V & V).
Our Simulation Technology
It is the first and so far only FEA software product designed to support Simulation Governance and V & V.
FEA + Simulation Governance = Verifiable Solutions
Our verifiable solutions are made possible by implementing the requirements of Simulation Governance. Simulation Governance controls and standardizes the simulation process much like Corporate Governance controls and standardizes the functioning of a corporation.
The yardstick that measures successful implementation of Simulation Governance is validation of the model and verification of the solution. As these terms can be misused in practice, the Dictionary & Terms glossary was developed to help us speak the same technical language.
Our Approach to Numerical Simulation
StressCheck®‘s Simulation Technology, or Sim Tech, is based on higher-order hierarchic finite element technology, the result of decades of R&D on numerical simulation advancements.
StressCheck®‘s engine has inherent differentiators which support verification and validation of FEA solutions.
We keep our element library simple, our solutions hierarchic and our post-processing unrestricted.
How We Benchmark
How can you tell if your current FEA code can guarantee reliability? If you submit a result to management and you can tell them that the margin of error for your prediction is within, say, 2% and you can back it up, then you are using a code that guarantees reliability.
Without verification, benchmarking is moot. We only benchmark with verified FEA results.Learn More
What Powers Our Simulation Technology
StressCheck® Professional is based on the p-version finite element method. Because the p-version is a more comprehensive implementation of the finite element method than the more traditional h-version, StressCheck® Professional can be operated in both the “h-mode” (least efficient) and “hp-mode” (most efficient).
Additionally, higher-order (p-version) FEA converges at least twice as fast as the lower-order (h-version, what other FEA codes typically have). Use fewer degrees of freedom to get higher solution quality. But it gets even better: with proper meshing the error of approximation decreases exponentially. A problem that takes hours to solve with a traditional h-code will only take minutes with StressCheck®.
Also, StressCheck® is the only FEA program in existence today which was designed for controlling both the errors of discretization and idealization.
- The errors of discretization are the errors controllable by the finite element mesh and the polynomial degree (h- or p-extensions).
- The errors of idealization are the errors associated with the restrictions incorporated in mathematical model.
This allows StressCheck® to support numerical simulation like no other FEA product.
Key Benefits of Our Simulation Technology
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Recent News & Events
“Through the use of StressCheck® the A-10 Aircraft Structural Integrity Program’s (ASIP) Analysis Group is able to model more accurately the physics of fatigue crack propagation in critical aircraft structure. Through this tool we are able to model, analyze and predict failure of aircraft structure and then develop crucial inspection and maintenance planes to ensure the safety and sustainability of our nations warplanes. Without the analysis capability provided to us through StressCheck® we would not be able to provide accurate assessments of the A-10 structure to top USAF leadership.”
SWRI Research EngineerSouthwest Research Institute