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Quick Reference Guide

Table of contents

mesh Geometry and mesh preparation

  • It is preferred to use solid geometry meshed with sweep method and Solid Shell element type .
    This is equivalent to using shell mesh, but it eliminates manual mid-surface pre-processing work.
  • It is preferred to model weld seams with the Add Welds instead of geometry parts.
    This allows for easy optimization of the weld configuration and throat thickness without updating geometry, contacts and mesh.
  • If using shell geometry, extend and connect edges with Shared topology.

weldContact_32x32 Weld Contacts

exportmaterial Export Weld Material

addWeld_32x32 Add Fillet/Butt welds

  • Multiple weld seams can be defined in one object if the reference face for one seam is not the target face for another.
  • The first edge picked defines the start of section path.
  • Do not use Share Topology to connect solid bodies as this is not compatible with “Add weld” and will make meshing more difficult.
  • If weld graphics is corrupt try debugging tips to open in SCDM and “Cut&Paste” geometry and update Mechanical.
  • The Add Butt Weld requires a chamfered geometry.
  • Welds defined in a static analysis can be used in a pre-stressed Modal and subsequent Transient, Harmonic, Random & Spectrum analyses.
  • Use Mesh Results “Rst Material Number” to display “Add Fillet/Butt Weld” Elements added into FE Model.
  • Weld contacts are adjusted/morphed to the geometry and may cause mesh quality issues. The morphing can be turned off.

weld_32x32 Weld Strength Result

lamellar_32x32 Laminar Strength Result

fatigueTool Weld Fatigue Result

  • Weld Fatigue evaluation based on IIW recommendations for fatigue.
  • SNcurve FAT class S-N curves from IIW, Eurocode 3 and DNV are included, see the design codes section.
    User defined S-N curves can be added.
  • CSV Generic stress data is post-processed using CSV Stress Fatigue.
  • SLin Through thickness linearized stress (common in ASME) is post-processed using Linearized Stress Fatigue.
  • struct Structural stress fatigue in welds (DNV, Eurocode etc.) is post-processed using Structural Stress Fatigue.
  • Nom Nominal Stress Fatigue is mainly used for base material fatigue evaluation.
    Available stress types: Principal, Sum of Principal, Stress Intensity, Equivalent, Normal X/Y/Z, Shear XY/YZ/XZ.
    The geometric stress in Nominal Stress Fatigue can be derived using the Hot-Spot Stress Fatigue method.
  • HS Hot-Spot Stress Fatigue is recommended for weld fatigue evaluation of shells and solids.
    Available stress types: Normal (default), Parallel, Shear, Principal (no limit), Principal (IIW limit), Equivalent, Equivalent (DNV).
    Use “mesh inflation” to create at least one element between Hot-Spot and first interpolation line.
    Use “Weld mesh” method to create weld mesh connections and hot-spot imprints in a shell model.
  • R1 Effective Notch Stress Fatigue is recommended for evaluation of the weld toe or weld root and requires detailed geometry and mesh preparation, min 4 elements in a 90° fillet.
  • Results are displayed if mesh is good enough. Check result item Life quality is 100% ±50%.
  • Don’t use long path names with regional characters or very large node numbers >1E8, see Known Issues and Limitations.

cumDam_32x32 Cumulative damage

weldChild Child Result

weldGroup Group Result

femRst Mesh Result

  • Use Mesh Results to display FEM results (temperature, stress, strain, contact) from added welds.

worksheetPreview Weld object worksheet preview

htmlicon Weld Report

  • One-button-click Weld report for selected analysis with information for all defined welds and their results.
  • The Weld report is available by installing the Report Generator app and will use the Weld Toolkit license.
    The general report features requires the Report Generator license.
  • The weld report is easy to import to Microsoft Word.

EC3 Eurocode 3 assessment

  • Weld assessment according to Eurocode 3 for strength and fatigue including detailed results summary in the Weld report.

AISC AISC 360-16 assessment

  • Weld assessment according to AISC 360-16 for strength including detailed results summary in the Weld report.

user User code assessment

  • User defined weld codes can be created adding additional materials, S-N curves or edit the expressions for utilization calculation.