Results 71 to 80 of about 21,453 (250)

Hygromnemics: Programmable Material Memory Matter Actuators via Wet Pre‐Constraining

Advanced Materials Technologies, Volume 10, Issue 23, December 3, 2025.
Humidity‐based pre‐constraining creates hygromnemics‐shape memory matter. From identical biocomposites actuation in dry and wet states is obtained via hygromnemic and hygromorphic actuation, respectively. Hygromnemic actuators present long‐ and short‐term shape memory abilities.
Charles de Kergariou, Findlay S. G. Smith, Richard S. Trask, Adam W. Perriman, Fabrizio Scarpa, David Correa   +5 more
wiley   +1 more source

Free Vibration Analysis of Rotating Beams Based on the Modified Couple Stress Theory and Coupled Displacement Field

Applied Mechanics, 2021
In this paper, transverse vibration analysis of rotating micro-beam is investigated based on the modified couple stress theory. The simply-supported micro-beam is modeled utilizing Euler-Bernoulli and Timoshenko beam theories.
Alireza Babaei, Masoud Arabghahestani
doaj   +1 more source

Can Asymmetrical Mechanical Loading Be Accurately Inferred From the Analysis of Skeletal Material?

American Journal of Biological Anthropology, Volume 188, Issue 4, December 2025.
ABSTRACT Objectives Reconstructing habitual limb preference in the past is crucial for understanding the evolution of hominin behavior. However, our ability to reliably identify asymmetrical behaviors from bone remains is limited due to a lack of experimental evidence directly correlating a history of loading asymmetry with skeletal asymmetry.
Antonio Profico, Nathan Jeffery, Fotios Alexandros Karakostis   +2 more
wiley   +1 more source

A new 3D-beam finite element including non-uniform torsion with the secondary torsion moment deformation effect [PDF]

, 2013
In this paper, a new 3D Timoshenko linear-elastic beam finite element including warping torsion will be presented which is suitable for analysis of spatial structures consisting of constant open and hollow structural section (HSS) beams.
Aminbaghai, Mehdi, Kutis, Vladimir, Mang, Herbert A., Murin, Justin   +3 more
core  

Study on physical essence of the Timoshenko beam theory and its relation with the Euler beam theory [PDF]

SCIENTIA SINICA Technologica, 2018
Compared with the Euler beam theory, the Timoshenko beam theory has the advantages in solution accuracy and in applicable aspect ratios. However, it received some criticisms in two aspects: firstly, it is energy inconsistent, and secondly, it cannot be reduced to the Euler beam theory in a mechanics way.
LuXian LI, YongLe PEI, TieCheng DUAN, PeiShuai GENG   +3 more
openaire   +1 more source

Structural and Functional Co‐Adaptation of Plants of the Genus Lysimachia L. (Primulaceae) and Pollinating Insects of the Genus Macropis Panzer (Hymenoptera, Melittidae)

Ecology and Evolution, Volume 15, Issue 12, December 2025.
The co‐adaptation of bees from the genus Macropis and Lysimachia plants has been studied in detail. Research shows that bees collect not just pure liquid oil from flower petals but tear off trichome heads filled with oil, transferring them to their nests.
Vladimir G. Radchenko, Mykola G. Chausov, Artur F. Likhanov, Hanna Yu. Honchar, Denis Michez   +4 more
wiley   +1 more source

Free vibration analysis of angle-ply laminate composite beams by mixed finite element formulation using the Gâteaux differential

Science and Engineering of Composite Materials, 2014
Free vibration analyses of angle-ply laminated composite beams were investigated by the Gâteaux differential method in the present paper. With the use of the Gâteaux differential method, the functionals were obtained and the natural frequencies of the ...
Ozutok Atilla, Madenci Emrah, Kadioglu Fethi   +2 more
doaj   +1 more source

A LINEARIZED TIMOSHENKO BEAM THEORY IN FINITE DISPLACEMENTS

Doboku Gakkai Ronbunshu, 1985
A linearized finite displacement theory of the Timoshenko beam is formulated as the counterpart to so-called beam-column theory of the Bernoulli-Euler beam. The corresponding stiffness equation is derived in a useful form for practical applications. Both theory and stiffness equation result in the same buckling load as the Engesser formula which has ...
Akio HASEGAWA, Tetsuo IWAKUMA, Shigeru KURANISHI   +2 more
openaire   +2 more sources

Weak solutions for a singular beam equation

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 105, Issue 12, December 2025.
Abstract This paper deals with a dynamic Gao beam of infinite length subjected to a moving concentrated Dirac mass. Under appropriate regularity assumptions on the initial data, the problem possesses a weak solution which is obtained as the limit of a sequence of solutions of regularized problems.
Olena Atlasiuk, Arnaud Heibig, Adrien Petrov   +2 more
wiley   +1 more source

Multi‐fidelity data meta‐learning approach for seismic response prediction of high‐rise shear wall buildings

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 29, Page 5512-5533, 9 December 2025.
Abstract Rapid and accurate estimation of seismic responses in city‐scale buildings is critical for post‐earthquake loss assessment and pre‐event identification of vulnerable buildings. However, conventional numerical simulation methods struggle to balance efficiency and accuracy when applied to large‐scale buildings, while existing data‐driven methods
Chenyu Zhang, Changhai Zhai, Weiping Wen, Guoqing Zhang   +3 more
wiley   +1 more source