Category Archives: II.1 Research Highlights

RESEARCH HIGHLIGHTS: Images, Videos, Invited Speeches

Fragmentation video

This simulation consists of a metallic rod impacting a quasi-brittle brick at various velocities. The objective of this study is to demonstrate the ability of the Lattice Discrete Particle Model to simulate impact induced fragmentation. The image shows the failure … Continue reading

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Tension tests on fiber reinforced concrete

This post discusses the numerical simulations of tension testes on fiber reinforced concrete specimens. Figure (a) below shows experimental and numerical stress versus displacement curves for four different fiber volume fractions (Vf ): 0% (plain concrete), 2%, 3%, and 6%. The lattice discrete … Continue reading

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Fracture of fiber reinforced concrete

This post deals the results of three-point bending test simulations on notched specimens. Only the central part of the specimen is simulated through the accurate lattice discrete particle model while the two lateral parts are modeled used elastic finite elements. This is … Continue reading

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Biaxial tests on concrete

In this figure the results of biaxial quasi-static tests on plain concrete panels are reported. In the center of the picture one can see the comparison between the numerical (solid curves) and experimental (circles) failure domains normalized with the compressive … Continue reading

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Blast induced fragmentation

The simulation of damage induced by a blast on a reinforced concrete wall is reported in this figure. The top of the figure shows the geometry of the wall as well as the position of the charge. The bottom of … Continue reading

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Fragmentation

This simulation consists of a metallic rod impacting a quasi-brittle brick at various velocities. The objective of this study is to demonstrate the ability of the Lattice Discrete Particle Model to simulate impact induced fragmentation. The image shows the failure … Continue reading

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Penetration

This figure shows the simulation of a steel projectile penetration through a reinforced concrete slab. Concrete, rebars, and projectile are modeled by LDPM, elasto-platic beam elements, and elasto-plastic brick elements, respectively (top left and top right). The striking velocity is … Continue reading

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Sponsors

DTRA Defense Threat Reduction Agency ES3 Engineering and Software Solutions, Inc. EU European Community HILTI Hilti Corporation MIUR Italian Minister of University and Research NWU Northwestern university NSF National Science Foundation ONR Office of Naval Research POLIMI Politecnico di Milano … Continue reading

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Mixed mode fracture

This figure depicts the setup of the mixed-mode fracture test in which a double notched prismatic panel was loaded in tension (T) and shear (S). The shear load was applied first up to a shear force close to the force … Continue reading

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Drying and transitional thermal creep of concrete

This example is relevant to transitional thermal creep tests in which the temperature is changed during the application of sustained load. In addition, the specimen undergoes drying due to an environmental 50% relative humidity. The figure shows the comparison between … Continue reading

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