Results 231 to 240 of about 388,704 (251)

Dynamic collapse of critically stressed isotropic and composite cylinders

Communications in Numerical Methods in Engineering, 1999
Summary: The study is concerned with the dynamic collapse of cantilever isotropic and composite cylinders. The cylinders are initially subjected to critical compressive loads at the free edge. A small increase in these critical loads is then dynamically applied in the form of a sinusoidal excitation, using the first natural frequency of the system. The
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Near-critical behavior of the dynamic stress-optical coefficient in liquid crystalline elastomers

Macromolecules, 1993
Dynamic stress-optical measurements on liquid crystalline elastomers with different crosslinking densities have been carried out in the isotropic phase. The appearance of two relaxation processes in the spectra is probably due to the side-on attachment of the spacers to the mesogenic groups. The relaxation frequencies and the relaxation strength of the
Sigel, R., Stille, Werner, Strobl, Gert, Lehnert, R.   +3 more
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Time distribution of stress drops, critical strain and crossover in the dynamics of jerky flow

Materials Science and Engineering: A, 2003
Abstract The distribution in time of stress drops in the jerky flow of several Al–Mg alloys is investigated in velocity controlled tensile tests, in relation with the crossover from hopping to propagating bands. The distribution evolves from randomness for static bands to increasing regularity for hopping bands.
K. Chihab, C. Fressengeas
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Quantifying the critical role of westerly wind bursts in ENSO dynamics: the “wind stress shaving” approach

2023
Westerly wind bursts (WWBs)—brief but strong westerly wind anomalies in the equatorial Pacific—play an important role in El Niño–Southern Oscillation (ENSO) dynamics, but quantifying their effects has been challenging. Here, we investigate the cumulative effects of WWBs on ENSO characteristics, including the occurrence of extreme El Niño events, via ...
Fedorov, A., Yu, S.
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Critical dynamic stress for the frozen subgrade soil

Road Materials and Pavement Design, 2022
Zhiwei Zhou, Mingde Shen, Qingzhi Wang
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Dynamic Stress Analysis of Critical and Cyclic Loads for Production Casing in Horizontal Shale Wells

SPE/IADC International Drilling Conference and Exhibition, 2019
Abstract Recent development of a new dynamic model for tubular stress analysis is now extended to the design challenges and failure modes characteristic of long production casing strings in extended horizontal shale wells. In particular, the issue of cyclic loading due to repeated sequences of multi-stage fracturing has not been ...
Robert F. Mitchell, Nola R. Zwarich, Hai L. Hunt, Albert R. McSpadden, Ruggero Trevisan, Malcolm A. Goodman   +5 more
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Critical voltages and blocking stresses in nematic gels

The European Physical Journal E, 2007
We present a model of the dynamics of director rotation in nematic gels under combined electro-mechanical loading. Focusing on a model specimen, we describe the critical voltages that must be exceeded to achieve director reorientation, and the blocking stresses that prevent alignment of the nematic director with the applied electric field.
A, DeSimone, A, DiCarlo, L, Teresi
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Stress analysis in critical cross sections of dynamic compression bone plates

2021
ABSTRACT In this study stress analysis of implant plates applied on tibia in human body is considered as a discussion subject. Tibia plate with elliptical six hole, TS 4272/2 number» in dimension of (103 x 11.5 x 4), is investigated in the study. The plate is made of 316 L type stainless steel: The plate studied is fixed to the tibia by using screws ...
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Flow Stress and Critical Dynamic Recrystallization Behavior of Cu–Fe16Mn0.6C High Manganese TWIP Steel

steel research international, 2012
AbstractThe true stress–strain curve of Cu–Fe16Mn0.6C twinning induced plasticity (TWIP) steel was studied with a compression test on Thermecmastor‐Z thermal simulator at a temperature range of 850–1150°C and strain rate range of 0.03–30 s−1. The influence of deformation temperature and strain rate on high‐temperature flow stress and critical ...
Liang Gaofei, Lin Changqing, Fang Yuan
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Integrated Workflow with Static and Dynamic Geomechanical Modelling for Fault Critical Re-Active Stress Evaluation

ADIPEC
Abstract The Songliao Basin, a vast sedimentary basin located in Northeast China, extends in a north-northeast direction, covering the Heilongjiang, Jilin, Liaoning provinces, and the Inner Mongolia Autonomous Region. It spans approximately 750 kilometers in length and 330-370 kilometers in width, encompassing an area of 260,000 square ...
Zhansong Pei, Mingtao Liu, Xingning Huang, Hanbing Xu   +3 more
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