Analytical simulation of tensile response of fabric reinforced cement based composites
详细信息 查看全文
- 作者：Barzin Mobasher ; Jitendra Pahilajani and Alva Peled
- 关键词：Fabric reinforced composites ; Cement composites ; Laminated composites ; Pultrusion ; Fibers ; Fabrics ; Toughness ; Strength ; Microcracking ; Toughening ; Damage mechanics ; Stress– ; strain ; Alkali resistant glass fibers ; Polypropylene fabrics
- 刊名：Cement and Concrete Composites
- 出版年：2006
- 出版时间：January 2006
- 年：2006
- 卷：28
- 期：1
- 页码：77-89
- 全文大小：795 K
文摘
A model simulating the tensile behavior of fabric–cement composites is presented to relate the properties of the matrix, fabric, interface and the damage parameters to the overall mechanical response of the composites. Crack spacing parameters measured during tensile tests are used to define the damage parameters, and related to the stiffness degradation as a function of the applied strain. This procedure is integrated in composite laminate theory using an incremental approach to model the uniaxial tensile response. Two approaches of linear and nonlinear fabric bridging models are used. The model is capable of using interface parameters for different fabrics, matrix properties, and processing parameters. Simulation results are studied by means of parametric simulation and a validation of a variety of experimental observations which vary the matrix formulation with flyash, changes in pressure after casting, and fabric type.