scholarly journals Response and representation of ductile damage under varying shock loading conditions in tantalum

2016 ◽  
Vol 119 (8) ◽  
pp. 085103 ◽  
Author(s):  
C. A. Bronkhorst ◽  
G. T. Gray ◽  
F. L. Addessio ◽  
V. Livescu ◽  
N. K. Bourne ◽  
...  
Keyword(s):  
Shock Loading ◽  
Ductile Damage ◽  
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

scholarly journals Experiment and finite element analysis of U-profile subjected to dynamic loading

2018 ◽  
Vol 183 ◽  
pp. 02056
Author(s):  
Martin Rund ◽  
Martin Mašek ◽  
Jan Džugan ◽  
Pavel Konopík ◽  
Jiøí Janovec
Keyword(s):  
Dynamic Loading ◽  
Fem Simulation ◽  
Field Measurements ◽  
Material Model ◽  
Tensile Tests ◽  
Ductile Damage ◽  
Experimental Investigations ◽  
Loading Conditions ◽  
Element Analysis ◽  
Dynamic Loading Conditions

The presented study deals with the FEM simulation of dynamic behaviour of U-profile crash under three point bent loading conditions verified by experimental investigations. The material ductile damage behaviour under wide strain rate region covering 0.001 – 1 000 s-1 was experimentally determined with the use of standard and micro tensile tests (M-TT). DIC systems were used for strain field measurements under quasi-static and dynamic loading conditions. Based on these experimental data, material model considering ductile damage was established in Abaqus/Explicit code. Additionally, also metallographic investigations were performed for the fracture behaviour description.

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 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.

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