Results 71 to 80 of about 283,775 (230)

Qualitative methods in bifurcation theory [PDF]

open access: yes, 1978
No ...
Marsden, Jerrold E.
core   +1 more source

Numerical analysis of the stability behaviour of castellated beams and comparison to regular hot‐rolled profiles

open access: yesSteel Construction, EarlyView.
Abstract Castellated steel beams, characterised by their unique perforated web design, have gained significant popularity in the construction of medium‐span structures, like industrial and office buildings. These beams offer an economical solution due to their increased bending moment capacity about the major axis with relatively low weight and ...
Julian Betken   +3 more
wiley   +1 more source

HDQ-based solution strategy for in-plane nonlinear buckling of shallow steel arches with linear elastic supports

open access: yesFrontiers in Physics
This paper investigates the in-plane nonlinear buckling of shallow steel arches with linear elastic supports. Differential equations of equilibrium are built considering a virtual work principle. To balance computational accuracy, efficiency, and cost, a
Zixiang Zhang   +4 more
doaj   +1 more source

Compression capacity of closely spaced double‐angle beam‐columns – Impact of joint stiffness

open access: yesSteel Construction, EarlyView.
Abstract Usually, pinned ends are assumed to calculate the compression capacity of closely spaced double‐angle members. In reality, the joints used in practice provide additional rotational restraint at the member's ends, which significantly influence the compression member capacity of such built‐up sections.
Paul Zauchner   +2 more
wiley   +1 more source

Approximate Stability Analysis of Omega‐Stringer Stiffened Composite Panels

open access: yesPAMM, Volume 26, Issue 1, March 2026.
ABSTRACT Thin‐walled composite structures are widely used in weight‐critical applications such as aircraft and spacecraft. However, ensuring the stability of such structures under various load cases remains a key challenge in their design and optimization.
Cherine El Yaakoubi‐Mesbah   +1 more
wiley   +1 more source

The Effect of Graphene on the Fatigue Response and Failure Mechanism of Composite Materials: A Review

open access: yesFatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 3, Page 933-962, March 2026.
ABSTRACT This review investigates the influence of graphene on the fatigue performance of polymer‐based composites, focusing on both unreinforced matrices and fiber‐reinforced composite laminates. Graphene materials, including nanoplatelets, graphene oxide, and hybrid nanostructures, offer exceptional mechanical, electrical, and barrier properties that
João M. Parente   +3 more
wiley   +1 more source

Bio‐Inspired Micro‐Fin‐Assisted Multi‐Modal Vascular Intervention

open access: yesAdvanced Science, Volume 13, Issue 8, 9 February 2026.
A magnetic guidewire with a micro‐fin–integrated tip is introduced for multimodal cardiovascular navigation. The micro‐fins exploit fluid drag to augment magnetic torque, enabling bifurcation traversal at 15 mT, tolerating 45° misalignment, bidirectional crawling, and buckle self‐correction.
Xu Liu   +8 more
wiley   +1 more source

Hilltop buckling as the A and O in sensitivity analysis of the initial postbuckling behavior of elastic structures

open access: yesJournal of Civil Engineering and Management, 2009
The coincidence of a bifurcation point with a snap‐through point is called hilltop buckling. In this paper, it either serves as the starting point ‐ the ?
Herbert A. Mang   +2 more
doaj   +1 more source

Entangled Multistable Origami with Reprogrammable Stiffness Amplification and Damping

open access: yesAdvanced Functional Materials, Volume 36, Issue 5, 15 January 2026.
This study introduces a class of origami‐inspired metamaterials that overcome the limitations of existing multistable metamaterials by eliminating the need for rigid lateral confinements. Panel entanglement, snap‐through interactions, and instabilities synergy enable them to achieve extensive shape‐shifting, enhanced stiffness, and remarkable energy ...
Amin Jamalimehr   +2 more
wiley   +1 more source

Least-squares Smoothed Shape Functions for Constructing Field-Consistent Timoshenko Beam Elements

open access: yesCivil Engineering Dimension
This paper presents an approach for constructing field-consistent Timoshenko beam elements using least-squares smoothed (LSS) shape functions. The variational basis for shear strain redistribution is thoroughly explained, leading to the derivation of ...
Foek Tjong Wong   +3 more
doaj   +1 more source

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