Analytical and Numerical Modeling of the Pullout Behavior between High-Strength Stainless Steel Wire Mesh and ECC

Area of Science:

• Materials Science
• Civil Engineering
• Structural Engineering

Background:

• Bond behavior is critical for composite material performance.
• Existing models do not fully capture bond characteristics between steel mesh and ECC.

Purpose of the Study:

• To develop and validate a constitutive model for the bond behavior between high-strength stainless steel strand mesh and Engineered Cementitious Composites (ECC).
• To investigate the influence of strand diameter, bond length, and transverse spacing on bond behavior.

Main Methods:

• Conducted 51 direct pullout tests to gather experimental data.
• Revised an existing bond-slip model using damage mechanics theory.
• Validated the revised model against experimental results and applied it in ABAQUS finite element analysis.

Main Results:

• High-strength stainless steel strand mesh enhances specimen ductility.
• The revised bond-slip model shows good agreement with experimental data, with errors within 10% (within 5% in the ascending section).
• Finite element analysis using the revised model accurately simulates pullout tests.

Conclusions:

• The revised bond-slip model effectively captures the bond behavior between steel strand mesh and ECC.
• The proposed model enhances the accuracy of numerical simulations for composite structures.
• This research provides a reliable tool for the engineering application of steel mesh-ECC composites.