Validated Uniaxial Stress–Strain Model for Cyclic Analysis of High-Performance Fiber-Reinforced Cementitious Composites

Abstract

The high cost of manufacturing high-performance fiber-reinforced cementitious composites (HPFRCCs) and low confidence in predicting their mechanical properties have limited their widespread use as construction materials. Also, the lack of reliable numerical stress-strain cyclic behavior models prevents the analysis and study of potential industrial applications. In this research, a new uniaxial fiber-reinforced cementitious composite constitutive model (FRCC model in OpenSees) is developed and validated for use in monotonic and cyclic analyses consisting of fiber section finite elements. The model is validated at the material and structural level through correlations of the numerical results with the limited laboratory test data available in the literature, as well as some new experimental results. The quantification of the uncertainties in structural response parameters due to model input parameter uncertainties is conducted via sensitivity analysis. The validation results make the model useful for performance-based assessment and design of civil engineering structures that use HPFRCCs.