MSC CAEfatigue 2025.1

MSC CAEfatigue 2025.1

MSC CAEfatigue is a specialized fatigue life prediction software that integrates with major finite element analysis (FEA) solvers like MSC Nastran, Abaqus, Ansys, and LS-DYNA. It allows engineers to translate stress, strain, or force results from static, transient, or dynamic simulations into accurate predictions of component life under complex loading histories. The software accounts for material behavior (S-N or ε-N curves), mean stress effects, multi-axial stresses, and surface treatments to estimate cycles to failure, damage, and fatigue safety factors. This enables virtual durability testing, reducing the need for costly physical prototypes and test rigs.

It is a critical tool for ensuring products meet their design life and reliability targets under real-world operating conditions.

Primary Users: Durability Engineers, CAE Analysts, and Validation Specialists in automotive, aerospace, off-highway, and industrial sectors who predict the fatigue life of components and systems using finite element analysis (FEA) results.

Key Features & Capabilities

CAEfatigue focuses on the post-processing of FEA results for durability assessment.

Core Fatigue Analysis Methods:

1. Stress-Life (S-N) Analysis:

   • High-Cycle Fatigue (HCF): For components failing after >10⁴ cycles. Uses elastic stresses from FEA and material S-N curves.

   • Advanced Mean Stress Corrections: Accounts for Goodman, Gerber, Soderberg, and other mean stress effects.

2. Strain-Life (ε-N) Analysis:

   • Low-Cycle Fatigue (LCF): For components failing in fewer cycles (<10⁴), where plastic deformation is significant. Uses non-linear FEA strain results and material ε-N curves.

   • Cyclic Stress-Strain Modeling: Incorporates material plasticity models for accurate local strain estimation.

3. Multi-Axial & Non-Proportional Fatigue:

   • Critical Plane Methods: Employs algorithms like Findley, Matake, or Brown-Miller to assess fatigue under complex, multi-axial stress states where principal stress directions rotate.

   • Stress Invariant Methods: For simpler proportional loading cases.

4. Spot Weld & Seam Weld Fatigue:

   • Specialized Weld Analysis: Dedicated methods (e.g., based on structural stress or force-resultant approaches) to predict fatigue life at weld joints, which are common failure locations.

What’s New in 2025.1:

• Enhanced Solver Integration: Support for the latest versions of FEA solvers (Nastran 2025, Abaqus 2025, etc.).

• Improved Performance: Faster solution times for large models with many load cases.

• Expanded Material Models: Additional material data and modeling options.

• Usability Improvements: Streamlined GUI for setting up complex analyses.

🖥️ System Requirements

CAEfatigue is a post-processor that must handle large FEA result files.

Minimum System Requirements:
Windows 10/11 (64-bit) or Linux 64-bit (RHEL, SLES), a multi-core Intel/AMD processor, 16 GB RAM (32+ GB recommended), a graphics card with OpenGL support and 2 GB VRAM, 10 GB free disk space (SSD recommended for result file access), and a 1920×1080 display.

Recommended for Professional Analysis:
A high-performance workstation with Windows 10/11 Pro or Linux, a fast multi-core CPU (Intel Core i9/Xeon or AMD Ryzen 9/Threadripper), 64+ GB RAM, a dedicated NVIDIA Quadro/GeForce RTX card with 4-8 GB VRAM, fast NVMe SSDs, and a high-resolution monitor.