Preface of the “Symposium on numerical analysis of irreversible deformation, micro- and macro- fracture of isotropic and anisotropic materials under shock loading conditions”

2012 ◽  
Author(s):  
Alexander A. Lukyanov ◽  
Evgeny Romenski
Keyword(s):  
Numerical Analysis ◽  
Shock Loading ◽  
Anisotropic Materials ◽  
Irreversible Deformation ◽  
Loading Conditions

scholarly journals Publisher's Note: “Response and representation of ductile damage under varying shock loading conditions in tantalum” [J. Appl. Phys. 119, 085103 (2016)]

2016 ◽  
Vol 119 (10) ◽  
pp. 109901
Author(s):  
C. A. Bronkhorst ◽  
G. T. Gray ◽  
F. L. Addessio ◽  
V. Livescu ◽  
N. K. Bourne ◽  
...  
Keyword(s):  
Shock Loading ◽  
Ductile Damage ◽  
Loading Conditions

Electrophysical properties of ferroelectrics under shock loading conditions

1980 ◽  
Vol 16 (4) ◽  
pp. 462-466
Author(s):  
E. Z. Novitskii ◽  
V. D. Sadunov ◽  
T. V. Trishchenko
Keyword(s):  
Shock Loading ◽  
Loading Conditions ◽  
Electrophysical Properties

scholarly journals The effect of residual strain on twinning in shock-loaded copper

1986 ◽  
Vol 44 ◽  
pp. 422-423
Author(s):  
G.T. Gray
Keyword(s):  
Thin Films ◽  
Plastic Strain ◽  
Residual Strain ◽  
Shock Loading ◽  
Stacking Fault ◽  
Stacking Fault Energy ◽  
Experimental Techniques ◽  
Published Data ◽  
Loading Conditions

Under shock-loading, twinning is observed in metals that do not twin under conventional loading conditions, for example copper and nickel where the stacking fault energy is about 78 and 128 ergs/cm2, respectively. Contradictions in the published data on the twinning stress in copper (from 1.6 GPa in thin films to 14.5-20 GPa in bulk specimens suggest differences associated with experimental techniques. This study examines the role of residual plastic strain (eres) on the deformation substructures, particularly twinning, in shock-roaded copper.

scholarly journals Assessment of the Upstream Slope Stability of Darbandikhan Rockfill Dam during Drawdown

2021 ◽  
Vol 9 (1) ◽  
pp. 8-15
Author(s):  
Sirwan Gh. Salim ◽  
Krikar M. G. Noori
Keyword(s):  
Steady State ◽  
Numerical Analysis ◽  
Slope Stability ◽  
Water Level ◽  
Factor Of Safety ◽  
Computer Software ◽  
Loading Conditions ◽  
Upstream Slope ◽  
Rockfill Dam ◽  
The Stability

Earth and rockfill dams face a variety of loading conditions during lifetime. One of the most critical loading conditions is the rapid drawdown of water level after steady state conditions. Rapid drawdown may cause instability of upstream slope of the dam. The present work examines the stability of a rockfill dam under different drawdown rates in terms of factor of safety for the upstream slope of the dam. For this purpose, a computer software named GeoStudio 2012 SEEP/W and SLOPE/W has been used for the numerical analysis. The results showed that the drawdown rate has a significant effect on stability of rockfill dam in which increasing the drawdown rate from 1 m/day to 10 m/day decreases the stability of the dam by 33%. Based on the outcomes, for the studied case the drawdown rate (1 m/day) can be recommended.

scholarly journals Effects of microstructure and shock loading conditions on the damage behavior of polycrystalline copper

2012 ◽  
Vol 26 ◽  
pp. 02008 ◽  
Author(s):  
J.P. Escobedo ◽  
E.K. Cerreta ◽  
D. Dennis-Koller ◽  
B.M. Patterson ◽  
R.A. Lebensohn ◽  
...  
Keyword(s):  
Shock Loading ◽  
Polycrystalline Copper ◽  
Loading Conditions ◽  
Damage Behavior

scholarly journals Large Engine Hybrid Ceramic Bearings

1994 ◽  
Author(s):  
Mark A. Rhoads ◽  
Manohar Bashyam ◽  
William J. Crecelius
Keyword(s):  
Condition Monitoring ◽  
High Speed ◽  
Shock Loading ◽  
Monitoring Device ◽  
Loading Conditions ◽  
Large Engine ◽  
Bearing Condition Monitoring ◽  
Rolling Elements ◽  
Hybrid Bearing ◽  
Full Scale Tests

General Electric Aircraft Engines under contract from the Advanced Research Projects Agency (ARPA), has demonstrated the ability of ceramic rolling elements to withstand shock loading conditions experienced during race spalling, has performed a series of full scale tests directed at showing the thermal benefit of large hybrid bearings at speeds up to 3.0 MDN, and has developed a condition monitoring device that detects both ceramic and metallic bearing debris. The details of the three primary tasks are presented in this paper: Task 1 involves the testing of a hybrid bearing operating in severe shock loading conditions, with comparisons to an all steel bearing. Task 2 involves back-to-back comparison of an all-steel high speed bearing to a hybrid bearing of the same geometry and to a hybrid bearing of tighter race curvatures, showing differences between outer ring temperatures of all-steel and hybrid bearings. Task 3 deals with the bench testing of a new ultrasonic bearing condition monitoring device, designed to collect and detect both ceramic or metallic debris.

Sign in / Sign up

Export Citation Format

Share Document