Endurica EIE™ (Efficient Interpolation Engine) is a module within the Endurica software suite, specifically developed to accelerate the transformation of multi-channel load signals into elastomer fatigue analysis.
The primary function of Endurica EIE is to take real service load data and convert it into stress–strain time histories, making them directly usable for fatigue life prediction.
In this context, Endurica EIE:
Processes real service load records obtained from test rigs, vehicle road data, or multibody dynamics simulations,
Converts these loads into stress–strain time histories representing the nonlinear behavior of elastomer components,
Prepares the results for direct use in fatigue solvers such as Endurica CL or Endurica DT.
Fatigue analysis of elastomer components becomes computationally expensive when long-duration, multi-axial load histories are solved directly using conventional finite element analysis (FEA). Endurica EIE provides a highly efficient alternative to this traditional approach.
While direct FEA-based load time history simulations may require hours or even days, Endurica EIE can process the same data within minutes. This results in orders-of-magnitude reductions in computation time, especially for long and complex load signals.
Endurica EIE can handle long time histories derived from road load data, field measurements, or real machine operating conditions without excessive signal reduction or simplification.
The architecture of Endurica EIE makes it well suited for digital twin and near real-time simulation environments, enabling rapid evaluation of continuously updated load data.
Endurica EIE supports up to six independent load channels simultaneously (e.g., three forces and three moments). This capability is essential for accurately representing complex, multi-axial service loading conditions.
Instead of solving every load increment with a full finite element analysis, Endurica EIE relies on a precomputed load–displacement map. Real service loads are rapidly interpolated within this map, allowing:
Elimination of repetitive FEA solutions,
High computational efficiency even for very long load histories.
In cases where load channels exhibit strong correlation, Endurica EIE can identify and reduce redundant channels. This:
Decreases map dimensionality,
Reduces computational cost,
Maintains high accuracy with minimal information loss.
The Pathfinder utility automatically identifies optimal load paths in the load space. This enables efficient selection of map points and improves the robustness of the interpolation process.
Endurica EIE takes advantage of multi-core processing for parallel computation. Binary input/output capabilities further accelerate the handling of large datasets.
Time-based load histories can be imported using CSV files as well as Endurica-specific data formats.
Load data import
Road load data, field measurements, or simulation outputs are imported into the system.
Definition of map boundaries
Load combinations to be solved via FEA are identified.
Map population using FEA solutions
Nonlinear elastomer behavior is computed at each selected grid point.
Execution of EIE interpolation
Real service load histories are rapidly evaluated on the map.
Generation of stress–strain time histories
These outputs are used directly in Endurica CL or DT for fatigue assessment.
Automotive elastomer components: suspension bushings, engine mounts, vibration isolators
Tire and rubber applications: multi-channel road load analysis
Digital twin systems: fatigue evaluation using real-time or continuously updated load data
| Module | Function |
|---|---|
| Endurica CL | Elastomer fatigue life prediction |
| Endurica DT | Damage accumulation and remaining life assessment |
| Endurica EIE | High-speed load-to-strain conversion engine |
| fe-safe/Rubber | Integrated fatigue solutions with Endurica |
Endurica EIE is particularly well suited for:
Automotive, tire, and elastomer component design engineers
Engineering teams working with multi-channel road load or field data
Digital twin and advanced durability simulation applications
Endurica EIE™ enables engineers to directly leverage real service load data while achieving high accuracy and exceptional computational efficiency in elastomer fatigue analysis. When combined with Endurica CL and DT, it forms a comprehensive and modern end-to-end durability simulation framework for elastomer components.