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Chiral flows can induce neck formation in viscoelastic surfaces

Iop.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from iop.org Daily Mail and Mail on Sunday newspapers. ....

Lucasd Wittwer , Centre For Information Services , German Research Foundation , Research Unit , Project Number , Deutsche Forschungsgemeinschaft , Excellence Strategy , Excellence Physics , Information Services , High Performance Computing , Arbitrary Lagrangian Eulerian ,

"Performance of an auxetic honeycomb-core sandwich panel under close-in" by Rajendra Prasad Bohara, Steven Linforth et al.

This paper aims to scrutinise the effectiveness of a re-entrant auxetic honeycomb-core sandwich panel (AHSP) to protect reinforced concrete (RC) slab under close-in and far-field detonations of high explosive. A series of quarter symmetric 3D comprehensive numerical models were developed by using Arbitrary Lagrangian Eulerian (ALE) formulation in LS-DYNA hydrocode. Strain rate effects of the rate sensitive materials were employed in the model to consider dynamic behaviour of the materials during blast loading. The developed numerical model was validated with the documented experimental results. Deformation patterns, energy absorption, overpressure damping, blast pressure deflection, and stress-transmission to the protected structure were investigated with the computational models. Furthermore, the performance of AHSP sacrificial protective structure was compared with an equivalent areal density conventional honeycomb-core sandwich panel (CHSP) structure. The results showed that AHSP no ....

Arbitrary Lagrangian Eulerian , Blast Load , S Dyna , Rotective Structure ,

If you Want to Move an Asteroid, you Need the Right Kind of Nuclear Explosion

If you Want to Move an Asteroid, you Need the Right Kind of Nuclear Explosion
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If you Want to Move an Asteroid, you Need the Right Kind of Nuclear Explosion
Using nuclear devices to deflect or disrupt an asteroid. Sounds a bit crazy, no? Maybe a little too Hollywood? And yet, detonating nukes in space may be necessary someday for the sake of planetary defense. In order for this method to be effective, scientists need to work out all the particulars in advance. That means knowing how much force will be necessary depending on the mass and trajectory of the asteroid. ....

United States , Lawrence Livermore National Laboratory , Acta Astronautica , Institute Of Technology , Los Alamos National Laboratory , Air Force Institute , Lansing Horan , Complex Integration Principal Directorate , Monte Carlon Particle , Arbitrary Lagrangian Eulerian , ஒன்றுபட்டது மாநிலங்களில் , லாரன்ஸ் லிவர்மோர் தேசிய ஆய்வகம் , நிறுவனம் ஆஃப் தொழில்நுட்பம் , லாஸ் அலமோஸ் தேசிய ஆய்வகம் , அேக படை நிறுவனம் , சிக்கலான ஒருங்கிணைப்பு ப்ரிந்ஸிபல் இயக்குநரகம் , மான்டே கார்லன் துகள் ,