Tensile Stress-Strain Modeling of Pseudostrain Hardening Cementitious Composites
- 1 May 2000
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Materials in Civil Engineering
- Vol. 12 (2), 147-156
- https://doi.org/10.1061/(asce)0899-1561(2000)12:2(147)
Abstract
This study proposes a new theoretical approach for predicting the tensile stress-strain relation of random short-fiber-reinforced cement composites showing pseudostrain hardening. This approach is grounded on the solid basis of micromechanics, which describes the pseudostrain hardening phenomenon in terms of constitutive properties of the fiber, matrix, and fiber/matrix interface. The proposed modeling requires theoretical treatment of an inelastic strain due to multiple cracking. This modeling is achieved by employing a probabilistic description of initial flaw size distribution, which should be known for predicting the stress-strain relation. This study proposes a practical method for this identification using the tensile test result of a reference composite. A comparison with the test data indicates that the proposed model is capable of reasonably reproducing the stress-strain relation of “similar” composites. Such composites have a configuration similar to the reference configuration but different in fiber volume fraction and fiber length. Finally, the proposed theory is a potentially powerful tool for tailoring composites to satisfy targeted structural performance.Keywords
This publication has 25 references indexed in Scilit:
- Crack bridging in fiber reinforced cementitious composites with slip-hardening interfacesJournal of the Mechanics and Physics of Solids, 1997
- ANALYTICAL MODEL FOR FRACTURE BEHAVIORS OF PSEUDO STRAIN-HARDENING CEMENTITIOUS COMPOSITESDoboku Gakkai Ronbunshu, 1996
- Matrix design for pseudo-strain-hardening fibre reinforced cementitious compositesMaterials and Structures, 1995
- Stochastic Process of Multiple Cracking in Discontinuous Random Fiber Reinforced Brittle Matrix CompositesInternational Journal of Damage Mechanics, 1995
- Methodology for Relating the Tensile Constitutive Behavior of Ceramic‐Matrix Composites to Constituent PropertiesJournal of the American Ceramic Society, 1994
- Stochastic Aspects of Matrix Cracking in Brittle Matrix CompositesJournal of Engineering Materials and Technology, 1993
- Snubbing and Bundling Effects on Multiple Crack Spacing of Discontinuous Random Fiber‐Reinforced Brittle Matrix CompositesJournal of the American Ceramic Society, 1992
- Damage and Failure in Unidirectional Ceramic–Matrix CompositesJournal of the American Ceramic Society, 1992
- Distribution of Matrix Cracks in a Uniaxial Ceramic CompositeJournal of the American Ceramic Society, 1992
- The relation between porosity, microstructure and strength, and the approach to advanced cement-based materialsPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1983