BETA CAE's Own FEA Solver
EPILYSIS — FEA Solver
Named after the Greek word for solution, EPILYSIS embodies 25 years of accumulated CAE expertise. It covers structural linear and non-linear, dynamics, modal analysis, substructuring, and HPC — bridging the gap between pre- and post-processing for structural, NVH, and optimisation disciplines.
Overview
A Solver Built to Live in the BETA Suite
EPILYSIS is the addition to the BETA CAE Systems analysis tools family — available with the ANSA / EPILYSIS / META suite. It operates as a solution in the field of Finite Element, embodying accumulated knowledge from 25 years of collaboration with the CAE community.
Covering numerous solution types, it intends to bridge the gap between pre- and post-processing for disciplines such as Structural, NVH, Optimization, and more — without the friction of integrating an external solver.
Solution Type 1
Structural Linear
Linear static analysis on models subjected to static loads — when materials do not exceed their yield limit and deformations remain small relative to overall dimensions. Plus real symmetric Eigenvalue analysis to evaluate natural frequencies and normal modes.
- Linear static analysis under static loads
- Real symmetric Eigenvalue analysis
- Block-Lanczos modal extraction method
- AMLS (Automated Multi-Level Substructuring) supported
- Natural frequencies and normal modes
Solution Type 2
Dynamics
Frequency-domain and time-domain dynamic response — direct or modal methods, fluid-structure interface for frequency response, and the Fast FRA algorithm for efficient modal frequency response on large-scale models with high modal counts.
- Frequency Response — direct or modal method
- Fluid-Structure interface supported in frequency response
- Fast FRA algorithm for large models with many modes
- Transient Response — direct or modal in the time domain
Solution Types 3 / 4 / 5
Non-Linear, Substructuring, HPC
Structural Non-Linear
Quasi-static simulation between rigid and / or deformable structures with small strains — for the case when non-linear contacts are present in an otherwise linear-material model.
Substructuring
Reduce large-scale models using the Guyan static condensation method. For dynamic problems, Component Mode Synthesis (CMS) dynamic substructuring is also supported.
High-Performance Computing
Shared-memory parallel processing uses all available system processors to reduce solution times. Sophisticated in-and-out-of-core capabilities for large-scale models.
Applications
Where EPILYSIS Earns Its Keep
General Structural FEA
A wide range of FEA problems that engineers face daily — EPILYSIS covers them effortlessly with the ANSA pre-processor.
Crash / Safety Setup
Predefined seat-depenetration scenario uses EPILYSIS to depenetrate dummies from seats automatically — standard practice in safety analysis.
NVH Console Analyses
ANSA's NVH Console uses EPILYSIS to calculate modal reduced models, beam stiffeners, and run FRF-based assembly analysis in one environment.
Optimisation
ANSA's Task Manager invokes EPILYSIS to provide the necessary results as input data for downstream optimisers.
Composites
ANSA + META + EPILYSIS form a complete composite-modelling environment — analyse multiple load cases on composite structures.
Discretisation-Driven Remesh
Streamlined ANSA-to-META process providing an optimised mesh based on discretisation error in critical structural areas.
Features & Benefits
Built for Robustness & Confidence
Notable Features
- Thoroughly tested for robustness and accuracy with NAFEMS and other benchmark suites
- Advanced tools for early detection of modelling errors
- Solution error messages show the root of the problem
- Can run headlessly in batch mode without user interaction
- Designed to solve large-scale models efficiently
- Shared-memory parallel process (multi-threading)
- Multiple solution types applicable across industry sectors
Benefits
- Decrease costs through less physical prototyping
- Explore a variety of "what-if" scenarios at low cost
- Complete the analysis process from pre- to post-processing efficiently
- Maximise return on existing software investments
- Living in the pre-processing environment makes complex processes easier
- A solver integrated in a well-known pre-processor with numerous assistant tools
Related
Works Well With
ANSA Pre-Processor
BETA CAE pre-processor — natural upstream of EPILYSIS. Model build-up, meshing, and solution setup happen here.
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FATIQ
Fatigue life prediction from EPILYSIS results — natural downstream for durability sign-off.
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SPDRM
Enterprise SDM & process management — orchestrates EPILYSIS runs and stores results across teams.
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Get Started
25 Years of FEA Expertise, In One Solver
Talk to Craftronics about EPILYSIS — the BETA CAE FEA solver integrated with ANSA and META.