shear


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shear

 [shēr]
an applied force that tends to cause an opposite but parallel sliding motion of the planes of an object. Such motions cause tissues and blood vessels to move in such a way that blood flow may be interrupted, placing the patient at risk for pressure ulcers. An example of a shearing force is seen when a patient slumps in a chair; the skin around the buttocks is stretched by the movement and interferes with circulation.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

shear

(shēr),
The distortion of a body by two oppositely directed parallel forces. The distortion consists of a sliding over one another of imaginary planes (within the body) parallel to the planes of the forces.
[A.S.]
Farlex Partner Medical Dictionary © Farlex 2012

shear

(shîr)
v. sheared, sheared or shorn (shôrn), shearing, shears
v.tr.
1. To remove (fleece or hair) by cutting or clipping.
2. To remove the hair or fleece from.
v.intr.
To use a cutting tool such as shears.
n.
1. often shears
a. A pair of scissors.
b. Any of various implements or machines that cut with a scissorlike action.
2. The act, process, or result of shearing, especially when used to indicate a sheep's age: a two-shear ram.
3. Something cut off by shearing.

shear′er n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

shear

(shēr)
Distortion of a body by two oppositely directed parallel forces; consists of a sliding over one another of imaginary planes (within body) parallel to planes of forces.
[A.S.]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Caption: Figure 13: Comparison of shear angle and stress before and after the design.
The material of all the shear pins was Q345, and the yield and ultimate strength of the material were 360 and 525 MPa, respectively.
"I had a vision that this program would really benefit lawyers, their practices, and the system," Shear said.
The bulk modulus and shear modulus used in FLAC3D can be calculated from the elastic modulus and Poisson's ratio based on the generalized Hook's Law.
The overall test system is controlled by a computer recording the shear strength, horizontal displacement, vertical displacement and water phase inlet and outlet.
* The angle shear punches (conical shear and bevel shear) resulted in the least tool wear, and the punches with die corner radius (edge hone) were also found to be effective in reducing the tool wear.
Reverse roll coating can give shear rates over 100,000 [s.sup.-1], and the paint in direct roll coating probably sees shear rates of at least a few thousand [s.sup.-1].
GFRP with a tensile strength of 480 MPa and Young's modulus of 50 GPa was used for the shear reinforcement plates.
Clive Hamer farms at Hirnant, Elan Valley, near Rhayader, and shears sheep commercially both here in the UK and in New Zealand.