In this paper, a previously developed meso-scale model for concrete, called the Confinement Shear Lattice (CSL) model, is extended in order to include the effect of loading rate on concrete strength and fractur
tted very well by the model if inertia effects (as well as other structural features of the tests such as specimen geometry and boundary conditions effects) are included in the numerical simulations. 3. The CSL model can simulate correctly strain-rate effects on concrete fracturing behavior. In ...
MECHANICAL behavior of materialsThree high-performance concrete (HPC) materials with different specimen geometries were characterized using Kolsky compression bar techniques to study the strain rate and specimen size effects on their uniaxial compressive strength. A large-diameter Kolsky bar and recently ...
2.1 Strain rate effects It is generally believed that the differences of concrete constitutive behavior under static and dynamic loadings are induced by strain rate effects. Exploration in this field seemed to be initiated by the experimental study presented by Abrams dated back about 100 years in ...
Marcrist specify that their discs can be used for cutting and grinding metals, concrete, masonry and building materials. Section 3. Analytical considerations of vibrations of a rotating disc Southwell25 and Timoshenko26 derived an analytical solution for the natural frequencies of a circular disc. ...
The effects on the stress-strain response of bond strength variability and particle position are proved to be negligible. Bond breakage was recorded during the simulations to explain the internal damage within the sample. The modified Burger's model has proved to be a useful tool in modeling the...
3.Dynamic mechanical behavior of concrete underhigh strain rateusing SHPB;高应变率下混凝土动态力学性能SHPB实验 6)intermediate strain rate中应变率 1.Experimental study of tensile property of cp-Ti atintermediate strain rates;多晶纯钛中应变率拉伸力学行为实验研究 ...
For the nonlinear analysis of reinforced concrete structures a variety of models have been considered. For the early research on the nonlinear analysis, the material models which were obtained at low strain rates without strain rate effect included were generally adopted to predict behavior of the ...
Modelling the dynamic response of concrete with mesoscopic heterogeneity 8.6.2 The limiting strain rate and the load rise time for a Brazilian test The basis of the splitting test is established from the elastic theory. When a pair of compression forces, P, are applied on the opposite sides of...
The dynamic compressive behavior and the strain rate sensitivity of this aluminum alloy foam was investigated. 用Hopkinson压杆实验装置对开孔结构的泡沫 Al- 10 % Mg合金进行了动态压缩实验 ,在应变率为准静态、80 0 s- 1 和 2 0 0 0 s- 1 条件下测量了动态和准静态压缩应力 -应变曲线 ,研究了这...