Offshore Structural Analysis Using SACS Software

Types of offshore structures (fixed platforms, jack-ups, subsea structures)

Environmental and operational loadings

Structural design codes and standards (API RP 2A-WSD, ISO 19901)

Overview of structural design philosophy: Ultimate, Fatigue, Serviceability

Concept of redundancy, robustness, and integrity

Overview of SACS modules (Precede, Structural, Postvue, Seastate, etc.)

Interface navigation and file structure

Types of analyses SACS can perform

Integration with other Bentley tools and software

Creating geometry: Joints, members, and frames

Defining member properties and materials

Boundary conditions and constraints

Importing geometry from CAD or other formats

Hands-on: Build a sample 4-leg jacket structure

Dead loads, live loads, equipment loads

Wave, current, and wind load generation

Seastate module: Applying wave theories (Airy, Stokes, Stream Function)

Load combinations and load cases (API RP 2A-based)

Hands-on: Define load cases for a shallow water platform

Static linear and nonlinear analysis

P-Delta analysis

Modal analysis (natural frequency and mode shapes)

Dynamic response analysis (spectral, time history)

Hands-on: Run a static and modal analysis on a jacket structure

Fatigue life prediction (SN curves, stress range histograms)

Wave scatter and fatigue damage accumulation

Joint Can and Tubular joint checks (API RP 2A, ISO 19902)

Code checks and utilization ratios

Hands-on: Perform fatigue analysis and tubular joint checks

Reviewing displacement, forces, and stresses

Interpreting unity checks and warnings

Animating deflections and mode shapes

Generating engineering reports

Exporting results to Excel or Word

Loadout, transportation, and lifting checks

API RP 2SIM for structural integrity management

Aging structures and reserve strength ratio (RSR)

Integration with structural reliability tools

Brief on collapse analysis and pushover studies

Participants analyze a complete platform structure

Define loads, apply environmental conditions, run full analysis

Evaluate fatigue life and joint strengths

Present summary of design and results

Review of common modeling and analysis pitfalls