● SOFTWARE SOLUTION
LIMIT® — Fatigue and Strength
Assessment Software
Palla-Tech Engineering is an authorised reseller of LIMIT®.
Contact us for a free trial version.
What is LIMIT®?
LIMIT® is a software tool for performing static strength and fatigue assessments of welded and non-welded steel and aluminium structures. It was developed by CAE Simulation & Solutions GmbH (Vienna, Austria) and has been in commercial use since 2010. It works with stress and displacement results exported from your existing FEA software, so no change to your existing simulation workflow is required.
Why LIMIT®?
Performing a code-compliant weld fatigue assessment manually is a repetitive, time-consuming process that scales poorly with model complexity. For a structure with several hundred weld details, individual calculations easily reach the tens of thousands. Manual execution introduces real risk of error — a wrong FAT class or missed load case pair can lead to non-conservative results. LIMIT® handles this workflow automatically, delivering results that are fully traceable to the applicable code or guideline.
What LIMIT® Does
Automatic Weld Detection
Identifies welds directly from model topology. For shell models, this uses shared-node pairs with unique filtering to speed up the process.
Load Case Combination
Evaluates all combinations and identifies the governing pair per evaluation point, applying correct stress ranges and safety factors.
Report Generator
Generates fully documented, personalised assessment reports in HTML or LaTeX formats.
FAT Class Assignment
Automatically assigns fatigue parameters from internal libraries based on detected geometry and selected code. MultiEdit allows efficient batch-definition.
Sensor & Sections Technology
Sensor Tech extracts code-conforming stresses for solid models without shell meshes. Sections Tech enables assessment of weld roots modeled with solid elements.
Graphical Results
Displays utilisation ratios directly on the FE model for intuitive interpretation.
Assessment Types
LIMIT® covers three assessment types: static strength, finite life fatigue (variable amplitude), and infinite life fatigue (endurance limit / constant amplitude).
Industries
Used across mechanical engineering, railway, crane and lifting equipment, heavy machinery, plant engineering, and amusement ride industries — wherever welded structures must be assessed for fatigue or static strength in compliance with a recognised standard.
Supported Codes & Guidelines
- FKM Guideline
- Eurocode 3 (EN 1993-1-9)
- Eurocode 9 (EN 1999-1-3)
- DVS 1612, DVS 1608
- EN 13001, EN 17149, DIN 15018
- BS 7608, GB 50017
- IIW Recommendations
- AAR Section C Part II, ERRI B12
- EN 13979-1 / TB/T 3506
- DangVan and user-defined S-N curves
Supported FEA Solvers
LIMIT® interfaces directly with results from: Abaqus, Ansys, MSC Nastran, NX Nastran, Altair OptiStruct, MSC Marc, and SOLIDWORKS Simulation. A universal interface is also available for other solvers.
Interface & Results
Want to see LIMIT® in a real case study?
See our NAFEMS 2026 conference presentation on automated weld fatigue assessment.
Get in touch
As an authorised reseller, Palla-Tech Engineering can assist with licensing, configuration for your specific solver environment, and onboarding support. Contact us for a demonstration or to discuss your requirements.
Technical Audits
We don’t just sell software. We use it daily to solve real fatigue problems. Ask for a technical consultation.
fkm guideline
eurocode 3
IIW