Results 81 to 90 of about 67,709 (358)

Buckling analysis and optimal structural design of supercavitating vehicles using finite element technology

International Journal of Naval Architecture and Ocean Engineering, 2011
The supercavitating vehicle is an underwater vehicle that is surrounded almost completely by a supercavity to reduce hydrodynamic drag substantially.
Wanil Byun, Min Ki Kim, Kook Jin Park, Seung Jo Kim, Minho Chung, Jin Yeon Cho, Sung-Han Park   +6 more
doaj   +1 more source

Frequency jumps in the planar vibrations of an elastic beam [PDF]

, 2011
The small amplitude transverse vibrations of an elastic beam clamped at both extremities are studied. The beam is modeled as an extensible, shearable planar Kirchhoff elastic rod under large displacements and rotations, and the vibration frequencies are ...
Frelat, J., Goriely, A., Maurini, C., Neukirch, S.   +3 more
core  

Prescribed pattern transformation in swelling gel tubes by elastic instability

, 2012
We present a study on swelling-induced circumferential buckling of tubular shaped gels. Inhomogeneous stress develops as gel swells under mechanical constraints, which gives rise to spontaneous buckling instability without external force.
Hanqing Jiang, Howon Lee, Jiaping Zhang, Nicholas X. Fang, S. A. Bayer, S. P. Timoshenko   +5 more
core   +1 more source

Closed-form equation for natural frequencies of beams under full range of axial loads modeled with a spring-mass system [PDF]

, 2019
A new simple closed-form equation that accurately predicts the effect of an arbitrarily large constant axial load, residual stress or temperature shift on the natural frequencies of an uniform single-span beam, with various end conditions, is presented ...
Fernández Martínez, Daniel, Madrenas Boadas, Jordi, Valle Fraga, Juan José   +2 more
core   +2 more sources

Emergent Magnetic Structures at the 2D Limit of the Altermagnet MnTe

Advanced Functional Materials, EarlyView.
Renewed interest in MnTe has emerged due to its intriguing altermagnetism, a newly identified form of magnetism distinct from conventional ferro‐, antiferro‐, or paramagnetism. By combining magnetic X‐ray absorption spectroscopy, scanning tunnelling microscopy, and first‐principles theory, this study reveals that thinning MnTe to the 2D limit ...
Marc G. Cuxart, Roberto Robles, Beatriz Muñiz Cano, Pierluigi Gargiani, Clara Rebanal, Iolanda Di Bernardo, Alireza Amiri, Fabián Calleja, Manuela Garnica, Miguel A. Valbuena, Amadeo L. Vázquez de Parga   +10 more
wiley   +1 more source

The definition of the critical buckling load beam model and two-dimensional model of the round cylindrical shell that interact with the soil

Structural Mechanics of Engineering Constructions and Buildings, 2019
Aims of research. The research is aimed at determining the critical buckling load at which the shell interacting with the soil loses equilibrium stability, and finding the buckling mode of the shell in the linear and nonlinear formulations of the task ...
Sergey B. Kosytsyn, Vladimir Yu. Akulich
doaj   +1 more source

Deformation and Degradation in 18650 Li‐Ion Cells Under Freeze‐Thaw Cycling

Advanced Functional Materials, EarlyView.
This study investigates the impact of freezethaw degradation of 18650 cells via combined electrochemical and x‐ray imaging studies. High‐resolution synchrotron X‐ray tomography reveals deformation of the jelly‐roll structure and delamination of electrode active materials in cells cycled at 1C and 4C. These structural changes are quantitatively assessed
Xunkai Chen, Nicole M. Callen, Nghia T. Vo, Michael Drakopoulos, Zhong Zhong, Kelsey B. Hatzell   +5 more
wiley   +1 more source

Electroactive Liquid Crystal Elastomers as Soft Actuators

Advanced Functional Materials, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley   +1 more source

Structural Stability and Mechanical Analysis of PVC Pipe Jacking under Axial Force

Buildings
PVC pipe jacking is prone to cause yielding or buckling under the jacking force and may lead to engineering failure. The relationship between the buckling modes, ultimate bearing capacity, different diameter–thickness ratios, and length–diameter ratios ...
Rudong Wu, Kaixin Liu, Peng Zhang, Cong Zeng, Yong Xu, Jiahao Mei   +5 more
doaj   +1 more source

On mode localisation in tensile plate buckling

Comptes Rendus. Mécanique, 2005
In some cases, a tensile load may induce small compressive stresses and buckling phenomenon. In this Note, we present an analytical study of the buckling of long stretched plates. From this analytical model, one explains the wavelength selection and establishes that the in-plane stress localisation induces the mode localisation.
Jacques, Nicolas, Potier-Ferry, Michel
openaire   +2 more sources