Results 31 to 40 of about 1,129,217 (278)

Fracture of a viscous liquid

, 2003
When a viscous liquid hits a pool of liquid of same nature, the impact region is hollowed by the shock. Its bottom becomes extremely sharp if increasing the impact velocity, and we report that the curvature at that place increases exponentially with the ...
D. Joseph, David Quéré, Frédéric Restagno, I. Cohen, J.-T. Jeong, R. Burley, T. Lin, Élise Lorenceau   +7 more
core   +1 more source

Plume Development of the Shoemaker-Levy 9 Comet Impact [PDF]

, 2011
We have studied plume formation after a Jovian comet impact using the ZEUS-MP 2 hydrodynamics code. The three-dimensional models followed objects with 500, 750, and 1000 meter diameters.
Gabriel, Travis, Harrington, Joseph, Korycansky, Donald G., Palotai, Csaba, Rebeli, Noémi   +4 more
core   +3 more sources

Velocity equation for grenades while impacting on dry sand media

Defence Technology
This paper deals with the collision of sphere shape grenades with sand media. The central issue of the article is the establishing of an empirical velocity equation of the grenade while impacting on sand that is used to solve motion equations of the ...
Martin Macko, Xuan Son Bui, Kongsathit Phanthavong, Duc Hung Pham, Van Gion Do, Van Minh Do, Jiri Skala   +6 more
doaj   +1 more source

Chaotic dynamics in a simple bouncing ball model

, 2010
We study dynamics of a ball moving in gravitational field and colliding with a moving table. The motion of the limiter is assumed as periodic with piecewise constant velocity - it is assumed that the table moves up with a constant velocity and then moves
Okninski, Andrzej, Radziszewski, Boguslaw   +1 more
core   +1 more source

Study on Rock-Breaking Mechanisms of Multi-Dimensional Impact Cutting Based on PDC Cutter Numerical Simulation

Shiyou jixie, 2023
The development and application of the torsional impact drilling model improve the efficiency of breaking rocks along the wellbore circumference.To enhance the rock-breaking efficiency of the compound impact drilling and the optimal torsional-axial ...
Qi Yue, Liu Gonghui, Li Jun, Zha Chunqing, Tian Yudong, Li Yumei   +5 more
doaj  

Fragmentation of a Circular Disc by Impact on a Frictionless Plate

, 2004
The break-up of a two-dimensional circular disc by normal and oblique impact on a hard frictionless plate is investigated by molecular dynamics simulations.
Arbiter N, Behera B Kun F MaNamara S Herrmann H J, Bhupalendra Behera, Buchholtz V, Chau K T Wu S Z Zhu W C Tang C A Yu T X, Data S Mishra B K, D’Addetta G A, Ferenc Kun, Fujiwara A, Hans J Herrmann, Kelly E G, Matsui T, Potapov A V Campbell C S, Pöschel T, Sean McNamara, Thornton C, Turcotte D L   +16 more
core   +1 more source

Prolonged Corrected QT Interval as an Early Electrocardiographic Marker of Cyclophosphamide‐Induced Cardiotoxicity in Pediatric Hematology and Oncology Patients

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Cyclophosphamide (CY) is associated with potentially fatal cardiotoxicity, yet no electrocardiographic indices have been established for early detection of CY‐induced cardiomyopathy. This study aimed to determine whether corrected QT interval (QTc) prolongation can predict early onset of CY‐related cardiac dysfunction in pediatric ...
Junpei Kawamura, Kentaro Ueno, Takuro Nishikawa, Yoshihiro Takahashi, Koji Nakae, Yasuhiro Okamoto   +5 more
wiley   +1 more source

Rock Breaking Analysis and Process Parameter Optimization of Pneumatic DTH Hammer Bit

Shiyou jixie, 2022
In order to improve the rock-breaking efficiency and penetration ability of pneumatic DTH hammer in hard strata, based on the theory of nonlinear contact dynamics, the ABAQUS software was used to build a piston-pneumatic DTH hammer bit-rock(granite ...
Wang Shenglin, Wei Qinwen, Liu Chengjun, Deng Yinjiang, Zhang Shiming, Xiao Xinyuan   +5 more
doaj  

A Comprehensive Study on the Deformation Behavior of Hadfield Steel Sheets Subjected to the Drop Weight Test: Experimental Study and Finite Element Modeling

Metals, 2018
This work presents the results of experimental and finite element modeling studies of impact behavior on the response of a high content of manganese steel blanks with a 1.2 mm thickness of sheets, known also commercially as Hadfield steel (an austenitic ...
Halil Murat Enginsoy, Emin Bayraktar, Ali Kurşun   +2 more
doaj   +1 more source

Design and Analysis of the Capacitive RF MEMS Switches with Support Pillars

Sensors, 2022
Conventional parallel capacitive RF MEMS switches have a large impact during the suction phase. In general, RF MEMS switches have to be switched on and off in a considerably fast manner.
Hongbo Feng, Jiabin Zhao, Chengsi Zhou, Mingxin Song   +3 more
doaj   +1 more source