Nonlinear and Sequentially Linear Analysis of Tensile Strain Hardening Cement-based Composite Beams in Flexure
نویسنده
چکیده
High performance fiber reinforced cement-based composite (HPFRCC) materials have unique properties that are advantageous for many structural applications. In direct tension these materials can reach strains between 0.5% and 6% depending on material and specimen geometry. The large tensile strain capacity allows these materials to strain compatibly with steel reinforcement and achieve higher tension stiffening than traditional reinforced concrete. In compression, HPFRCC materials experience little to no spalling.
منابع مشابه
Prediction of Engineered Cementitious Composite Material Properties Using Artificial Neural Network
Cement-based composite materials like Engineered Cementitious Composites (ECCs) are applicable in the strengthening of structures because of the high tensile strength and strain. Proper mix proportion, which has the best mechanical properties, is so essential in ECC design material to use in structural components. In this paper, after finding the best mix proportion based on uniaxial tensile st...
متن کاملCharacterization of Fiber-reinforced Cement Composites by Their Tensile Stress- Strain Behavior and Quantification of Crack Formation
The behavior of fiber reinforced cement composites (FRCC) can be described and quantified by a variety of parameters, such as strength and strain capacity, toughness index, and fracture energy, obtained from tests in tension or bending in a large number different configurations including varying specimen geometries and test setups. Depending on the details of the individual testing procedures, ...
متن کاملFlexural Behavior of Reinforced HPFRCC Beams
High Performance Fiber Reinforced Cementitious Composite (HPFRCC) materials exhibit strain hardening behavior with multiple cracking under tensile loading. In this paper, experimental and parametric studies are performed to assess the influence of using HPFRCC material instead of normal concrete in reinforced concrete beams. After calibrating the experimental results, the analytical results inc...
متن کاملCavitation Damage During Flexural Creep of SiAlON–YAG Ceramics
Cavitation damage in flexure bars crept at 1170°C was studied by a density measurement technique. The cavity density within the flexure beams could be approximated by a linear function of position from the tensile surface. A threshold stress for cavitation damage is suggested from the results of this study. Below the threshold tensile stress, cavitation ceases, whereas above the threshold, cavi...
متن کاملNonlinear Numerical Integration Scheme in Strain Space Plasticity
Strains are applied to the integration procedure in nonlinear increments todecrease the errors arising from the linearization of plastic equations. Two deformationvectors are used to achieve this. The first vector is based on the deformations obtained bythe first iteration of the equilibrium step, and the second is acquired from the sum of thesucceeding iterations. By applying these vectors and...
متن کامل