Results 21 to 30 of about 2,305,322 (279)

Quasilocalized states of self stress in packing-derived networks [PDF]

open access: yes, 2017
States of self stress (SSS) are assignments of forces on the edges of a network that satisfy mechanical equilibrium in the absence of external forces. In this work we show that a particular class of quasilocalized SSS in packing-derived networks, first ...
Lerner, Edan
core   +3 more sources

Research on mechanical response of buried steel pipelines under continuous collapse

open access: yesYou-qi chuyun, 2021
Formation collapse is one of the common geological hazards for the buried long-distance pipelines. In order to study the mechanical response law of the buried steel pipelines under continuous collapse, experiments and numerical simulations of buried ...
Peng LIU   +5 more
doaj   +1 more source

A MEMS viscometer for unadulterated human blood [PDF]

open access: yes, 2010
The design and theoretical modelling of an oscillating micro-mechanical-viscometer designed for the measurement of whole unadulterated human blood, is described. The proposed device utilises the dependence of the squeeze-film damping ratio on properties
Andrews   +35 more
core   +1 more source

Neurobiological Mechanisms of Placebo Responses [PDF]

open access: yesAnnals of the New York Academy of Sciences, 2009
Expectations, positive or negative, are modulating factors influencing behavior. They are also thought to underlie placebo effects, potentially impacting perceptions and biological processes. We used sustained pain as a model to determine the neural mechanisms underlying placebo‐induced analgesia and affective changes in healthy humans.
Jon-Kar, Zubieta, Christian S, Stohler
openaire   +2 more sources

Non-linear fire-resistance analysis of reinforced concrete beams [PDF]

open access: yes, 2003
The non-linear structural analysis of reinforced concrete beams in fire consists of three separate steps: (i) The estimation of the rise of surrounding air temperature due to fire; (ii) the determination of the distribution of the temperature within the ...
Bratina, Sebastjan   +3 more
core   +1 more source

Mechanical response of X65 pipeline under rolling compaction of heavy trucks and the influencing factors

open access: yesYou-qi chuyun, 2022
With the acceleration of urbanization, more crossings of roads and pipelines appear, which poses some threat to the safety of pipeline operation. Taking X65 pipeline as the research object, the mechanical response of pipelines under three types of ...
Dong ZHANG   +6 more
doaj   +1 more source

Mechanical Response of Pipeline Leakage to Existing Tunnel Structures: Insights from Numerical Modeling

open access: yesBuildings
Pipeline leakage can induce ground surface settlements and structural responses in existing tunnels. A thorough understanding of pipeline–tunnel interactions is crucial for optimizing urban underground design and establishing construction guidelines.
Ruichuan Zhao   +3 more
doaj   +1 more source

Study on Mechanical Characteristics of Shield Tunnels in Composite Strata Considering Segment Parameters

open access: yesChengshi guidao jiaotong yanjiu
[Objective] The influence of longitudinal stratum differences on tunnel structure under complex strata conditions is often ignored in shield tunnel design, resulting in the problem that although the structural design may meet construction requirements in
KANG Xiaoyue   +6 more
doaj   +1 more source

3D mechanical analysis of aeronautical plain bearings: Validation of a finite element model from measurement of displacement fields by digital volume correlation and optical scanning tomography [PDF]

open access: yes, 2010
On Airbus aircraft, spherical plain bearings are used on many components; in particular to link engine to pylon or pylon to wing. Design of bearings is based on contact pressure distribution on spherical surfaces.
Doumalin, Pascal   +4 more
core   +2 more sources

Experimental study of mechanical and durability properties in hybrid binary and ternary fiber-reinforced ECC

open access: yesFrontiers in Built Environment
This study develops innovative hybrid fiber-reinforced Engineered Cementitious Composites (ECC) to advance sustainable construction materials. By incorporating ternary fiber systems (steel, synthetic, PVA) with supplementary cementitious materials (GGBFS,
Mahdi Kouhiazar Tulun   +4 more
doaj   +1 more source

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