SAP2000 - Distributed Plasticity

Explore how to model distributed material nonlinearity in SAP2000 with this step-by-step tutorial featuring a slender reinforced concrete cantilever column. Learn how stiffness and material nonlinear behavior affect second-order effects (P-Delta), how to set up fiber hinges (Fiber P-M2-M3), and how to edit concrete and steel reinforcement properties. We use a rectangular 65x50 concrete section (C30/37), 16 steel rebars (A500), and compare results for two different rebar diameters (20 mm vs. 16 mm) to see how stiffness reductions impact second order bending moments. You’ll also discover how to automatically mesh frame elements around hinges, view moment-rotation curves, and evaluate the performance of different fibers through stress-strain relationships. Whether you’re a structural engineer, student, or SAP2000 enthusiast, this video will help you master nonlinear analyses for more accurate and efficient designs.

Topics Covered:
• Nonlinear analysis in SAP2000
• Distributed material nonlinearity in reinforced concrete
• Second-order effects and P-Delta behavior
• Fiber hinge modeling (Fiber P-M2-M3)
• Section definitions and rebar layout
• Stress-strain curves for concrete and steel
• Automatic frame mesh around hinges
• Moment-rotation and stress-strain plots

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Learn more:
https://structuralacademy.com/article...