● Engineering Consulting • Jászberény, Hungary
Precision
Engineering
For Complex
Industries
Your partner for CAD design, FEM simulation, and
manufacturing optimization. We turn technical challenges
into validated solutions.
CAD / CAM
design & mfg
FEM Analysis
structural
CFD simulation
Fluid dynamics
Appearance
Speaking at NAFEMS Eastern Europe 2026
ABSTRACT
“Beyond FE Stress Peaks: Critical Weld Fatigue Assessment in a Robotic Arm Base”
Finite Element Analysis produces stress contour plots that are easy to interpret for static strength — but for welded structures under cyclic loading, those same peak equivalent stress values can be profoundly misleading. This presentation walks through a real industrial case study: a welded steel base for a Stäubli TX2 140 robotic arm, assessed for fatigue in accordance with the FKM Guideline. We demonstrate why Von Mises stress is an insufficient criterion for weld fatigue, how the correct assessment requires directional stress components at the weld toe across systematically paired load cases, and why the combinatorial complexity of multi-load-case assessments makes manual workflows error-prone at any realistic model size. The presentation concludes with a live demonstration of automated weld assessment using LIMIT software, showing how the complete assessment chain — weld detection, FAT class assignment, load case pairing, and utilisation ratio computation — can be executed in minutes with full traceability to the FKM Guideline.
Topics Covered
- Shell FE modelling of welded structures and shared topology
- FKM Guideline weld fatigue assessment methodology
- Why Von Mises stress peaks do not identify fatigue-critical welds
- Worst fatigue amplitude, stress range, and mean stress correction
- Automated assessment using LIMIT
- Weld detection, FAT classes, pairwise load case analysis
WHAT WE DO
Technical Competencies
We act as an extension of your engineering department.
CAD & CAM
Integrated design and manufacturing: from 3D modeling of special machinery to CNC toolpath generation.
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Special Machinery
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CNC Programming
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3D Modeling
FEM Analysis
Structural verification using Finite Element Method to ensure reliability, safety, and weight optimization.
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Structural Analysis
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Fatigue Calculation
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Dynamics & Vibration
CFD Simulation
Computational Fluid Dynamics to optimize flow, thermal management, and hydrodynamic performance.
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Flow Analysis
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Thermal Simulation
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Pressure Drop
Compliance & Quality
Industry Standards
We ensure all designs and analyses meet rigorous international standards for safety and performance.
Software Stack
ANSYS
LS-Dyna
Inventor
SIEMENS NX
TCAE
CalculiX
PrePoMax
HEXAGON SR1
FreeCAD
FLUENT
OpenFOAM
OpenRadioss
VDI 2230
Systematic calculation of high duty bolted joints
EN 12663
Structural requirements of railway vehicle bodies
IEC 61373
Railway applications – Rolling stock equipment – Shock and vibration tests
DVS 1608/1612
Design and strength assessment of welded joints
AD 2000
Regulations for pressure vessels
EN 13445
Unfired pressure vessels
Eurocode 3 & 9
Design of steel and aluminium structures
FKM
Analytical strength assessment of components
Recent Projects
A selection of our engineering challenges solved.
CAD
Special Machinery Design
CAD
Machinery for the Food Industry
CAM
Turbine Blade CAM
FEM
Weld Analysis for Railway Machinery
Contact Us
Let us discuss your next engineering project.
PHONE
+43 676 927 5265
+36 20 984 2124
location
5100 Jászberény, Hungary