scholarly journals Material deformation and fracture under impulsive loading conditions

1992 ◽  
Vol 15 (1) ◽  
pp. 3-25 ◽  
Author(s):  
P Rama Rao ◽  
S V Kamat ◽  
G Sundararajan
Keyword(s):  
Impulsive Loading ◽  
Loading Conditions ◽  
Material Deformation ◽  
Deformation And Fracture

Use of a liquid shock tube as a device for the study of material deformation under impulsive loading conditions

2004 ◽  
Vol 218 (1) ◽  
pp. 39-51 ◽  
Author(s):  
B W Skews ◽  
O E Kosing ◽  
R J Hattingh
Keyword(s):  
Shock Tube ◽  
Deformation Process ◽  
High Speed ◽  
Pressure Pulse ◽  
Applied Pressure ◽  
Impulsive Loading ◽  
High Speed Photography ◽  
Material Deformation ◽  
Metal Plates ◽  
Versatile Tool

The deformation of metal plates and tubes achievable through the use of liquid shock waves generated in a shock tube is studied, with reference to both free-forming and forming the metal into dies, as well as to imprinting detailed features. The process is highly controllable, in terms of the magnitude and duration of the applied pressure pulse. A projectile is fired into a liquid column producing a high-pressure liquid shock wave which impinges on the testpiece. Different projectile materials, driving pressures and impact velocities are used to alter the energy and impulse transmitted. A particular attraction of its use in a laboratory is the application of high-speed photography to the deformation process. Illustration of the application of the facility to slamming studies and to fracture of brittle materials is included. It is concluded that the techniques employed offer a useful and versatile tool for many studies of material deformation.

scholarly journals A non-ordinary state-based peridynamic method to model solid material deformation and fracture

2009 ◽  
Vol 46 (5) ◽  
pp. 1186-1195 ◽  
Author(s):  
Thomas L. Warren ◽  
Stewart A. Silling ◽  
Abe Askari ◽  
Olaf Weckner ◽  
Michael A. Epton ◽  
...  
Keyword(s):  
Solid Material ◽  
Material Deformation ◽  
Deformation And Fracture

Multiple Fracture of Beams Under Localized Impulsive Loading

1977 ◽  
Vol 44 (2) ◽  
pp. 259-263 ◽  
Author(s):  
J. D. Colton
Keyword(s):  
High Speed ◽  
Beam Theory ◽  
Impulsive Loading ◽  
Time Sequence ◽  
Bending Stress ◽  
Multiple Fracture ◽  
Fracture Patterns ◽  
Deformation And Fracture ◽  
Impulsive Loads ◽  
Framing Camera

The fracture patterns produced by localized impulsive loading on brittle beams and their dependence on the intensity and length of the load have been determined. Experiments were performed on effectively infinite beams loaded over a finite length with sheet explosive. The mechanisms, location, and time sequence of deformation and fracture were determined by posttest observation and by high-speed framing camera photographs. It was found experimentally that all fractures were initiated by bending stress and that the localized impulsive loading produced three different fracture patterns. The beam response was also predicted analytically by numerically integrating the characteristic equations of Timoshenko beam theory. It was found analytically that, depending on load length and intensity, a total of four fracture patterns, including the three observed experimentally, can be produced by localized impulsive loads.

Multiple Fracture of Plates Under Localized Impulsive Loading

1976 ◽  
Vol 43 (1) ◽  
pp. 33-38 ◽  
Author(s):  
J. D. Colton
Keyword(s):  
High Speed ◽  
Plate Theory ◽  
Impulsive Loading ◽  
Mindlin Plate ◽  
Strain Gages ◽  
Fracture Patterns ◽  
Deformation And Fracture ◽  
Impulsive Loads ◽  
Mindlin Plate Theory ◽  
Framing Camera

An investigation was performed to determine the fracture patterns produced by localized impulsive loading on brittle plates and their dependence on the intensity and area of the load. Experiments were performed on effectively infinite plates loaded over a finite area with sheet explosive. The mechanisms, location, and time sequence of deformation and fracture were determined by terminal observation, high-speed framing camera photographs, and strain gages. It was found that all fractures were initiated by bending stress; two different fracture patterns in plates were produced experimentally. The plate response was also predicted analytically by numerically integrating the characteristic equations of Mindlin plate theory. It was found analytically that, depending on loading intensity and duration, a total of five fracture patterns in plates, including both those observed experimentally, can be produced by localized impulsive loads.

The kinetic nature of material deformation and fracture

2008 ◽  
Vol 63 (2) ◽  
pp. 35-39
Author(s):  
Chengzhi Qi ◽  
Mingyang Wang ◽  
Qihu Qian
Keyword(s):  
Material Deformation ◽  
Deformation And Fracture
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