Experimental investigation of static behavior of self consolidating concrete shells made by poly-propylene fibers

Experimental investigation of static behavior of self consolidating concrete shells made by poly-propylene fibers

Shells are one of the most abundant and the most diverse types of structural forms that are found in our physical world. Based on engineering sciences, Shell structures are one of the highest forms of structures and they are made from different materials, for instance concrete. They have different utilization, including: shell covering roofs, water tanks, dams, bridges, tunnels wall and etc. Also use of self-Compacting Concrete as a fluid concrete with a high ability to transport and fullering ...

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Experimental and Numerical Simulation of Flat Nosed Projectile Impact into AL 5083 Plates

Experimental and Numerical Simulation of Flat Nosed Projectile Impact into AL 5083 Plates

In this paper, a study is presented on the experimental and numerical analysis of the failureprocess in 5, 10 and 15mm thicknesses of Aluminum 5083 subjected to normal impact by flatnosedprojectiles that have been made of Tungsten. To modeling the behavior of materials,Johnson ndash;Cook constitutive equation and fracture criterion are used. In all tests, initial andresidual velocities of the projectile are measured and the ballistic limit of each target plate isprecisely determined. Based on ...

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FREQUENCY AND DAMPING EVOLUTION DURING EXPERIMENTAL SEISMIC RESPONSE OF CIVIL ENGINEERING STRUCTURES

FREQUENCY AND DAMPING EVOLUTION DURING EXPERIMENTAL SEISMIC RESPONSE OF CIVIL ENGINEERING STRUCTURES

The results of the seismic tests on several reinforced-concrete shear walls and a four-storey frame are analysed in this paper. Each specimen was submitted to the action of a horizontal accelerogram, with successive growing amplitudes, using the pseudodynamic method. An analysis of the results allows knowing the evolution of the eigen frequency and damping ratio during the earthquakes thanks to an identification method working in the time domain. The method is formulated as a spatial model in ...

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