Dear Samwel,

You're absolutely right in recognizing SAP2000 as a strong tool for macro-modeling of masonry infill walls, particularly through the equivalent strut method. However, when it comes to micro-modeling—where the detailed behavior of both masonry units and mortar joints is explicitly represented—SAP2000 is not designed for this level of material-based finite element analysis. It lacks the flexibility required to define complex nonlinear material behavior, interface interactions, and localized failure mechanisms that are essential for reliable micro-modeling.

For this kind of analysis, I would highly recommend using Abaqus. It offers several advantages for both linear and nonlinear analysis, including:

-The ability to define detailed material properties for bricks and mortar separately, including plasticity, damage initiation/evolution, and contact behavior.

-Powerful contact and cohesive interaction models, essential for simulating debonding or cracking at mortar joints.

-High-quality meshing tools suitable for modeling irregular geometries or interfaces.

-Extensive nonlinear solution capabilities, including static and dynamic analyses.

Abaqus is widely used in research and engineering practice for micro-modeling of masonry structures, and you’ll find several published studies and modeling guides based on it. If your goal is to investigate the actual stress distribution, crack propagation, or failure mechanisms at the micro-level, Abaqus is far more suitable and reliable.

I’d be happy to guide you through the initial setup in Abaqus if you decide to switch.

Best regards,

Armin barzin

No, SAP2000 is not suitable for micro-modeling of masonry infill walls. It’s best for macro-modeling. For micro-modeling, use software like ABAQUS or DIANA.

No, SAP2000 is not ideal for micro-modeling of masonry infill walls. It is primarily suited for macro-modeling approaches like the equivalent strut method. Micro-modeling, which involves detailed representation of bricks and mortar using continuum finite elements, requires advanced nonlinear material modeling and meshing capabilities that SAP2000 lacks. For micro-modeling, it's better to use software like ABAQUS, ANSYS, or DIANA FEA. If attempted in SAP2000, results may not be reliable, and you'll face major limitations in element types, material definition, and contact interfaces. Proceed with caution and consider alternative tools better suited for detailed FE analysis.