Cadence BETA-CAE Systems – FATIQ v2026.1.0 for Windows

• Dual-Domain Fatigue Solvers: Perform advanced durability assessments in both the Time Domain (transient load histories, rainflow cycle counting) and Frequency Domain (random vibration, PSD spectrums).
• Comprehensive Lifecycle Pipeline: Complete setup, material assignment, boundary condition mapping, calculation, and post-processing within a single standalone GUI.
• Universal FEA Solver Interoperability: Direct ingestion of stress and strain result databases from industry-standard solvers including Nastran, Abaqus, ANSYS, and LS-DYNA.
• Guided Workflow Manager: Intuitive step-by-step wizard guides engineers from raw finite element meshes to damage distribution contour maps and fatigue life hot-spots.
• Multiaxial Fatigue & Mean Stress Corrections: Incorporates critical plane algorithms, Dang Van, Brown-Miller, Morrow, Goodman, and Gerber mean stress compensation models.
• Comprehensive Material Library: Integrated SN (Stress-Life) and EN (Strain-Life) material curves with built-in tools for synthetic curve generation and parameter estimation.
• TeAM SolidSQUAD-SSQ Crack: Full offline license emulation and binary patch ensuring permanent standalone operation.

Predicting Structural Durability with High Accuracy and Speed
In modern automotive, aerospace, railway, and heavy machinery engineering, predicting when and where a physical component will fail under cyclic mechanical stress is essential for safety, lightweighting, and cost reduction. FATIQ by Cadence BETA CAE Systems provides design and simulation teams with a focused, highly optimized platform dedicated entirely to fatigue durability calculations.

Rather than requiring cumbersome scripts or complex external solver coupling, FATIQ delivers a dedicated environment that reads structural FEA output directly. By isolating fatigue assessment from primary structural solvers, engineers can rapidly iterate through load variations, duty cycles, and material substitutions in minutes rather than re-running massive finite element simulations.

From Static Stress to Real-World Operational Life
FATIQ bridges the gap between raw finite element stresses and real-world loading environments. Whether evaluating automotive chassis subjected to proving ground road-load data, aerospace brackets exposed to engine vibration spectrums, or industrial machinery under repeating duty cycles, FATIQ calculates cumulative damage, rainflow matrices, and remaining fatigue life with engineering precision.

Key Analysis Modules & Methodologies:

• Time-Domain Fatigue (Stress-Life & Strain-Life):

  • SN Method (Wöhler): High-Cycle Fatigue (HCF) analysis ideal for elastic deformations.
  • EN Method (Coffin-Manson): Low-Cycle Fatigue (LCF) analysis incorporating local plastic strain behaviors.
  • Rainflow Counting (ASTM E1049): Extracts reversing stress/strain cycles from complex, non-periodic multi-channel time histories.
  • Mean Stress Effects: Goodman, Gerber, Soderberg, Morrow, and Smith-Watson-Topper (SWT) correction models.

• Frequency-Domain Fatigue (Vibration & Random Loads):

  • Direct calculation of fatigue life from Power Spectral Density (PSD) stress inputs and transfer functions (FRFs).
  • Advanced statistical methods including Dirlik, Bendat (Narrow Band), Steinberg, and Tovo-Benasciutto formulations.

• Multiaxial Fatigue Analysis:

  • Critical Plane algorithms to determine crack initiation angles on surfaces subject to non-proportional loading.
  • Signed Von Mises, Signed Max Principal Stress, and Dang Van criteria for complex shear/tension stress states.

• Material Characterization & Database:

  • Extensive built-in library of aluminum alloys, carbon steels, titanium, and cast metals.
  • Mathematical curve estimation tools to synthesize SN/EN curves based on ultimate tensile strength ($R_m$) and yield limit ($R_p$).

• Unified Integrated Post-Processing:

  • Direct visualization of damage accumulation contour plots, safety factors, and logarithmic life cycle projections over the 3D model.
  • Interactive hot-spot identification and rainflow matrix distribution graphs.

Supported Solvers & Result Formats:

• MSC Nastran / NX Nastran: .op2, .xdb, .h5
• Dassault Systèmes Abaqus: .odb
• ANSYS: .rst
• LS-DYNA: d3plot, .binout
• BETA CAE Ecosystem: Native integration with ANSA pre-processor and META post-processor databases

Computation Architecture:

• High-performance multi-threaded 64-bit solver engine
• Parallelized core calculations across user-assigned CPU thread counts
• Memory-mapped file caching for handling gigabyte-scale dynamic result sets

Installation Steps:

1. Extract the installation archive to a local directory.
2. Run the installer setup executable (setup.exe or FATIQ_v2026.1.0_win64.exe) as Administrator (Right-click -> Run as administrator).
3. Follow the on-screen prompts to complete the installation to your preferred directory (default: C:\Program Files\BETA_CAE_Systems\fatiq_v2026.1.0\).
4. Open the _SolidSQUAD_ (or Crack) folder.
5. Copy the supplied cracked files/folders (e.g., patched executables, libraries, or license emulator files) into the program directory, replacing the original files.
6. If the SolidSQUAD package provides a virtual license service (beta_cae_license_manager) or .lic file, follow the included readme.txt to configure the BETA_LM_LICENSE_FILE system environment variable or start the local license server.
7. Launch Cadence BETA-CAE FATIQ 2026.1.0.
8. The software is fully unlocked and ready for production use.

Frequently Asked Questions (FAQ):

• Q: Can FATIQ directly read ANSA geometry and mesh files?
  A: Yes, FATIQ is built on BETA CAE core libraries and seamlessly imports ANSA deck files and database structures.
• Q: How does frequency-domain fatigue save time compared to time-domain analysis?
  A: Frequency-domain analysis evaluates random vibration loading using statistical PSD inputs rather than simulating thousands of seconds of explicit time-step histories, shortening solver runtimes from hours to minutes.
• Q: Does FATIQ support non-proportional loading?
  A: Yes, using multiaxial critical plane approaches, FATIQ tracks changing principal stress directions over time to accurately predict crack initiation sites under non-proportional conditions.