FKM (6th, 2012)

FKM-Guideline (6th Edition, 2012) is the updated standard for analytical verification of mechanical components under static and fatigue loading, based on current engineering practices and industry research.

Implemented in SDC Verifier:

• Valid for steel, cast iron, aluminum, and cast aluminum structures
• Covers a wide range of influences, including material types, weld conditions, surface treatments, and service load profiles
• Enables automatic verification in Ansys Mechanical, Femap, and Simcenter 3D

Core capabilities:

Material & Geometric Settings

• Effective diameters (auto or user-defined)
• RmZ tensile strength input or standards-based values
• Surface conditions (roughness, coatings, treatments)
• Softening factor for aluminum alloys
• Anisotropy factor for directional properties

Weld and Fatigue-Specific Parameters

• Welded joint types, residual stress classification
• Weld factor, FAT class (per Tables 5.4.1 and 5.4.2)
• Plastic notch factors for stress concentration
• Hot Spot Stress and Weld Stress integration

🔹 Safety, Inspection, and Risk Configurations

• Factors for consequence of failure, regular inspections, and casting quality
• Stress occurrence probability and load safety factor
• Temperature correction and reference number of cycles
• Special treatment for surface-hardened or non-tested castings

This comprehensive standard is essential for projects demanding precision fatigue strength assessment, multiaxial stress handling, and high-confidence design validation in machine-building, automotive, and industrial equipment manufacturing.