Introduction to OpenSees

Overview of OpenSees: purpose, components, and Tcl fundamentals for getting started with STKO.

Introduction to STKO

Introduces STKO’s role in the OpenSees workflow, covering installation, key features, and a first frame example with Python basics.

Model Definition in STKO

Presents STKO’s pre/post-processor interface, navigation tools, and model setup through a 3D frame example with nonlinear extensions.

Geometries - Interactions - Selection Sets - Local Axes

Covers CAD geometries, interactions, selection sets, and local axes in STKO, linking concepts to OpenSees constraints and transformations.

Physical Properties

Explains physical properties in STKO, including materials, sections, special-purpose components, and practical assignment workflows.

Element Properties

Introduces element properties and common formulations, discussing modeling choices and effects such as softening and regularization.

Definitions and Conditions

Explains timeSeries and time concepts, then covers constraints, loads, and mass definitions used to build consistent analyses.

Mesh and Analysis

Introduces meshing tools and analysis setup in STKO, including recording, constraints, loads, regions, custom scripts, and damping.

Analyses Command - part 1 and 2

Explains the Analyses command: handlers, numberers, solvers, convergence tests, and typical solution algorithm combinations.

Analyses Command - part 3 and 4

Covers integrators and core analysis steps, outlining setups for static, dynamic, pushover, eigen/spectrum, and staged analyses.

Postprocessor - Visualizing Results

Introduces the postprocessor to load databases, create plots, extract data, and export animations for result interpretation.

Linear Static Analysis

Step-by-step linear static analysis of a 3D steel frame, from geometry and properties to loads, combinations, and automation scripts.

Material and Geometric Nonlinearities - RC Structures

Introduces material and geometric nonlinearities, outlining selections of materials, sections, and elements for RC and masonry frames.

Modeling Approaches to Plasticity - RC Structures

Compares plasticity modeling approaches in 3D frames, covering distributed vs lumped formulations and their practical implications.

Nonlinear Static Analysis - Pushover

Explains nonlinear pushover analysis setup, load patterns, result plots, and sensitivity studies on key model parameters.

Nonlinear Dynamic Analysis - Time History

Introduces nonlinear time-history analysis, covering mass, damping, excitation definitions, and transient analysis configuration in STKO.

Modal Analysis and Response Spectrum

Explains modal and response spectrum analyses, covering eigen solvers, setup requirements, and postprocessor result visualization.

3D Frame Structures - RC - part 1

Applies RC 3D frame modeling concepts, covering diaphragms, joint modeling, and infill panels with practical examples.

3D Frame Structures - Steel - part 2

Applies steel 3D frame modeling, covering section setup, bracing strategies, and large-displacement effects with example analyses.

3D Frame Structures - Masonry - part 3

Applies equivalent frame modeling for masonry, covering trilite and wall systems with alternative plasticity and shear formulations.