Results 61 to 70 of about 1,698,358 (207)

Design and Strength Safety Analysis of Pressure Relief Device for Perforating Gun

open access: yesShiyou jixie
Perforation detonation produces high-temperature and high-pressure gas. If the pressure exceeds the internal pressure strength of the gun body, the perforating gun would break, leading to accidents such as gun expansion and jamming.
Li Mingfei   +6 more
doaj   +1 more source

A study of fatigue crack closure using electric potential and compliance techniques [PDF]

open access: yes
Compared are closure data produced on the same specimen by the crack tip compliance gage and electric potential techniques. Experiments on 7075-T651 aluminum center cracked panels produced equivalent results on closure using the two techniques.
Cassatt, G. C., Clarke, C. K.
core   +1 more source

Finite element stress analysis of polymers at high strains [PDF]

open access: yes, 1973
A numerical analysis is presented for the problem of a flat rectangular rubber membrane with a circular rigid inclusion undergoing high strains due to the action of an axial load.
Durand, M., Jankovich, E.
core   +1 more source

Mechanically induced pseudo-magnetic fields in the excitonic fine structures of droplet epitaxial quantum dots

open access: yes, 2014
We present numerical investigations based on the Luttinger-Kohn four-band $k \cdot p$ theory and, accordingly, establish a quantitatively valid model of the excitonic fine structures of droplet epitaxial GaAs/AlGaAs quantum dots under uni-axial stress ...
Cheng, Shun-Jen   +2 more
core   +1 more source

Atomic-level Stress Calculation and Continuum-Molecular System Equivalence

open access: yesComputer Modeling in Engineering & Sciences, 2004
An atomistic level stress tensor is defined with physical clarity, based on the SPH method. This stress tensor rigorously satisfies the conservation of linear momentum, and is appropriate for both homogeneous and inhomogeneous deformations. The formulation is easier to implement than other stress tensors that have been widely used in atomistic analysis,
Shen, Shengping, Atluri, S. N.
openaire   +2 more sources

Body force equivalents for stress-drop seismic sources [PDF]

open access: yesBulletin of the Seismological Society of America, 1976
abstract The equivalent body forces for a stress-drop seismic source are found. When the isotropic stress drop and one of the three principal stress drops are zero, then the equivalent body forces are the same double couple without moment which would result from a shear dislocation. In general however, all six stress-drop components must
openaire   +1 more source

Models of stress fluctuations in granular media

open access: yes, 1997
We investigate in detail two models describing how stresses propagate and fluctuate in granular media. The first one is a scalar model where only the vertical component of the stress tensor is considered.
C. Eloy   +25 more
core   +1 more source

RESEARCH REGARDING THE STRENGTH CALCULUS OF PRODUCTS MANUFACTURED BY CYLINDRICAL BROACHES [PDF]

open access: yesFiabilitate şi Durabilitate, 2013
In this paper, we make a strength calculus of products manufactured by cylindrical broaches. In thispaper it is presented the strength calculus of a product when it is made the finishing process of a hole made witha cylindrical broach The main purpose of
Dan ILINCIOIU   +3 more
doaj  

Development and Test of High-Strength Flexible Drill Rod

open access: yesShiyou jixie
As the horizontal distance of ultrashort-radius drilling gradually extends,higher strength requirements are constantly being put forward for the mechanical and sealing performance of the flexible drill rod.In order to solve the existing problems of ...
Ma Tao   +5 more
doaj  

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