AISC Steel Connection Design with Finite Element Analysis (FEA)

Structural Steel Connection Design per AISC

We design and verify structural steel connections in full compliance with AISC 360-22 (Specification for Structural Steel Buildings) and AISC 341-22 (Seismic Provisions). Our scope ranges from simple shear connections to fully restrained moment connections, including special configurations for seismic design categories. Each connection is designed considering ASCE 7 load combinations, strength and serviceability limit states, and the ductility requirements specific to the lateral force-resisting system (SFRS). Our goal is to deliver connections that not only meet code requirements but are material-efficient, constructable, and compatible with shop fabrication processes.

• Shear connections: single plates (shear tabs), double angles, end plates
• Moment connections: extended end plates, directly welded flanges (WUF-W)
• Bracing connections and gusset plate design
• Column splices and base plate connections with anchor bolt design
• Seismic configurations per AISC 341 (SMF, IMF, SCBF, EBF) and ASCE 7
• Special connections: castellated beams, composite columns, multi-beam nodes

Advanced Finite Element Analysis (FEA) for Steel Connections

We leverage finite element analysis as an advanced validation tool for steel connections that go beyond the prescriptive methods of the AISC Steel Construction Manual. FEA enables us to model real connection behavior under complex loading, identify stress concentrations, evaluate force distribution in bolts and welds, and optimize designs for superior performance. This approach is especially valuable for non-standard connections, complex geometries, unusual combined loading, or when code compliance must be demonstrated through rational analysis per AISC 360 Section B3.4.

• Nonlinear material and geometric analysis (plasticity, large deformations)
• Stress and strain validation under AISC/ASCE 7 load combinations
• Contact modeling between plates, bolts, and welds with friction
• Connection performance optimization: material reduction without compromising safety or ductility
• Fatigue and cyclic behavior analysis for seismic and dynamic applications
• Failure mode evaluation: fracture, local buckling, block shear rupture

Codes and Standards Reference

All our connection designs are developed under the most demanding industry standards, ensuring full code compliance and complete documentation traceability. We keep our knowledge current with the latest code editions and actively engage in interpreting code requirements for project-specific applications.

• AISC 360-22: Specification for Structural Steel Buildings
• AISC 341-22: Seismic Provisions for Structural Steel Buildings
• ASCE 7-22: Minimum Design Loads and Associated Criteria
• AWS D1.1: Structural Welding Code – Steel
• AISC Steel Construction Manual, 16th Edition
• AISC Design Guide Series (DG 4, DG 16, DG 29, etc.)
• Eurocode 3 (EN 1993) for projects under European standards

Integrated Workflow

Our process integrates conventional prescriptive-based design with FEA validation to deliver connections that are safe, efficient, and constructable. We work in close coordination with the Engineer of Record (EOR), fabricators, and erection teams to ensure every connection is practical and field-executable.

• Load review, geometry assessment, and project requirements (design drawings and specifications)
• Preliminary design per AISC prescriptive methods and the Steel Construction Manual
• Detailed FEA modeling for validation, optimization, and limit state verification
• Complete documentation: detailed calculation reports with code references
• Connection detail drawings with fabrication information (welds, bolts, tolerances)
• Coordination with fabricators, detailers, and erection teams through project closeout

Why Choose ARKHYON for AISC Connection Design?

Our team combines solid hands-on experience in real projects with deep mastery of AISC codes and advanced FEA tools. This combination allows us to deliver solutions that not only meet code requirements but optimize material usage, reduce fabrication costs, and improve constructability. We have worked on projects in the United States, United Kingdom, and Europe, adapting to the specific requirements of each market while maintaining the highest standards of technical quality.