Results 31 to 40 of about 175,988 (236)

Analysis of the Bearing Capacity of Concrete-Filled Thin-Walled Square Steel Tubes with Helical Stiffening Based on Local Buckling

Buildings
To address the issue of local buckling in thin-walled steel tube concrete columns, a form of helical stiffening ribs was proposed. Axial compression tests were conducted on five sections of square steel tube concrete column specimens.
Penggang Tian, Zhenshan Wang, Kai Wang, Jianhui Niu, Zhixun Xie, Kangning Liu   +5 more
doaj   +1 more source

Buckling analysis of thin-walled functionally graded sandwich box beams [PDF]

, 2015
Buckling analysis of thin-walled functionally graded (FG) sandwich box beams is investigated. Material properties of the beam are assumed to be graded through the wall thickness.
Lee, Jaehong, Domagoj Lanc, Vo, Thuc, Jaehong Lee, Lanc, Domagoj, Turkalj, Goran, Thuc P. Vo, Goran Turkalj   +7 more
core   +1 more source

A Closed-Form Buckling Formula for Open-Coiled and Properly Supported Circular-Bar Helical Springs

Journal of Mechanical Engineering, 2018
As a continuation of the author’s previous studies on the buckling analysis of helical springs, a closed-form formula having been obtained with the help of the artificial neural network (ANN) is proposed and discussed in detail for the first time for a ...
Vebil Yildirim
doaj   +1 more source

Nucleation of Multiple Buckled Structures in Intertwined DNA Double Helices [PDF]

Physical Review Letters, 2017
We study the statistical-mechanical properties of intertwined double-helical DNAs (DNA braids). In magnetic tweezers experiments we find that torsionally-stressed stretched braids supercoil via an abrupt buckling transition, which is associated with nucleation of a braid end loop, and that the buckled braid is characterized by proliferation of multiple
Brahmachari, Sumitabha, Gunn, Kathryn H., Giuntoli, Rebecca D., Mondragón, Alfonso, Marko, John F.   +4 more
openaire   +3 more sources

Cardiac looping may be driven by compressive loads resulting from unequal growth of the heart and pericardial cavity. Observations on a physical simulation model

Frontiers in Physiology, 2014
The transformation of the straight embryonic heart tube into a helically wound loop is named cardiac looping. Such looping is regarded as an essential process in cardiac morphogenesis since it brings the building blocks of the developing heart into an ...
Jörg eMänner, Meric eBayraktar
doaj   +1 more source

A numerical investigation into the plastic buckling paradox for circular cylindrical shells under axial compression [PDF]

, 2014
It is widely accepted that for many buckling problems of plates and shells in the plastic range the flow theory of plasticity leads to a significant overestimation of the buckling stress while the deformation theory provides much more accurate ...
GUARRACINO, FEDERICO, R. Shamass, G. Alfano, Guarracino, F, Shamass, R, SHAMASS R, Alfano, G, ALFANO G   +7 more
core   +1 more source

Fabrication Routes for Ionic Conducting Fiber Strain Sensors

Advanced Engineering Materials, EarlyView.
Ionic conducting fiber strain sensors (ICFSs) offer compliant, textile‐integrable sensing. Thus far, the commercialization of ICFSs has been constrained by fiber fabrication routes. This review provides a fabrication‐centric analysis of ICFSs correlating processing strategies with material properties and scalability.
Leo John Kershaw, Zhanhong Yang, Anne Ladegaard Skov, Magdalena Skowyra   +3 more
wiley   +1 more source

Highly Nonlinear Solitary Waves for Rail Buckling Prevention [PDF]

, 2013
One of the major structural problems in the railroads made of continuous welded rails is buckling in hot weather and breakage or pulling apart in cold weather.
Cai, Luyao
core  

Study on helical post-buckling of motional coiled tubing in horizontal wells

Journal of Petroleum Exploration and Production Technology
Coiled tubing is widely used in oil and gas operations. However, the long coiled tubing may undergo sinusoidal or helical buckling deformations, and even lock-up, leading to property damage and serious accidents.
Zhuang Li, Liangyu Chen, Fei Yuan, Lei Zhao   +3 more
doaj   +1 more source

Dynamically Actuated Reconfigurable Topographical Surface Enables Active Control of Implant‐Associated Infections

Advanced Functional Materials, EarlyView.
A dynamically actuated reconfigurable topographical surface (DARTS) integrates contact‐mediated bactericidal nanotopography with programmable mechanical actuation to actively disrupt bacterial biofilms. Dynamic surface reconfiguration enhances bacterial killing and suppresses implant‐associated infections in vivo, providing a new strategy for active ...
Mohammad Asadi Tokmedash, Jihun Lee, J. Scott VanEpps, Sungmin Nam, Jouha Min   +4 more
wiley   +1 more source