Results 21 to 30 of about 422 (202)

Experimental and Numerical Behavior of Encased Pultruded GFRP Beams under Elevated and Ambient Temperatures

Fire, 2023
In this research, experimental and numerical studies were carried out to investigate the performance of encased glass-fiber-reinforced polymer (GFRP) beams under fire.
Enas M. Mahmood, Teghreed H. Ibrahim, Abbas A. Allawi, Ayman El-Zohairy   +3 more
doaj   +1 more source

Resistant bending moment to lateral-torsional buckling of continuous steel and concrete composite beams with transverse stiffeners

Revista IBRACON de Estruturas e Materiais, 2021
In this paper, a numerical analysis using the finite element method, employing the commercial code Ansys, is performed to evaluate the influence of transverse stiffeners welded to the web of the steel profile on the lateral stiffness and resistant ...
Janaina Pena Soares de Oliveira, João Victor Fragoso Dias, Ricardo Hallal Fakury, Adenilcia Fernanda Grobério Calenzani   +3 more
doaj   +1 more source

Influence of web stiffeners in the bearing capacity of steel castellated beams subjected to failure by web post instability

Revista Ingeniería de Construcción, 2017
This work presents a numeric study using the Finite Element Method for castellated beams manufactured from Brazilian steel rolled I-sections, which collapse by web post buckling.
W. Vieira, G. Verissimo, J. L. Rangel, J. Lopes   +3 more
doaj   +6 more sources

Effect of Horizontal Stiffeners on the Efficiency of Steel Beams in Resisting Bending and Torsional Moments: Finite Element Analysis

Buildings
Steel beams with eccentric loads are subjected to combined bending and torsional moments that lead to lateral displacements, unwanted stresses at the top and bottom flanges, and global buckling along their length.
Mishal H. Aljarbou, Ahmed M. Sayed
doaj   +1 more source

Effect of Web Stiffeners on The Flexural Behavior of Composite GFRP- Concrete ‎Beam Under Impact Load

Journal of Engineering, 2021
In this paper, numerical and experimental studies on the elastic behavior of glass fiber reinforced ‎polymer (GFRP) with stiffeners in the GFRP section's web (to prevent local buckling) are presented.
Safaa Ibraheem Ali, Abbas A. Allawi
doaj   +1 more source

Sulfation‐Tunable Peptide‐Glycosaminoglycan Hydrogels for Hematopoietic Stem and Progenitor Cell Expansion

Advanced Functional Materials, EarlyView.
Co‐assembly of rationally designed glycosaminoglycan‐binding peptides with sulfated glycosaminoglycans yields supramolecular hydrogels with tunable mechanics and matrix‐mediated cytokine retention. The glycosaminoglycans thereby act as cofactors, driving a coil‐to‐β‐sheet transition that triggers gelation.
Shirel Veretnik, Prannoy Seth, Maximilian Fusenig, Jens Friedrichs, Nicole Fertala, Passant Atallah, Uwe Freudenberg, Ayala Lampel, Carsten Werner   +8 more
wiley   +1 more source

Analysis of steel I-beams with rectangular web openings: experimental and finite element investigation

Engineering Structures and Technologies, 2015
Steel I-shaped beams with web openings of shapes like hexagonal, circular and rectangular at regular intervals have been used since last 60–70 years. Therefore aim of this paper is to examine the behaviour of steel I-beams with rectangular web openings ...
Samadhan G. Morkhade, Laxmikant M. Gupta
doaj   +1 more source

On the Modeling of Ship Stiffened Panels Subjected to Uniform Pressure Loads

Applied Mechanics, 2022
Stiffened panels constitute structural assemblies of the entire ship hull, i.e., double bottom, side shell, deck areas, etc. Prescriptive dimensioning of the stiffeners (web thickness and height and flange thickness and breadth) is solely based on the ...
Efstathios L. Platypodis, Konstantinos N. Anyfantis   +1 more
doaj   +1 more source

Hierarchical Collagen Nanofiber Gels Recapitulate a Physiologically Relevant Tumor Stromal Microenvironment

Advanced Healthcare Materials, EarlyView.
The collagen nanofiber (CNF) gel supports cancer cell culture, exhibiting cell morphology and cancer‐related protein expression similar to Matrigel. It offers a higher collagen concentration than commercial gels. Additionally, the CNF gel allows replication of the high elasticity of in vivo cancer tissue by controlling collagen fiber sizes, ranging ...
Naoko Sasaki, Tomoyuki Suezawa, Shiro Kitano, Ryohei Katayama, Michiya Matsusaki   +4 more
wiley   +1 more source

Bottlebrush Polyolefin Sulfones as Triggerable and Degradable Pressure‐Sensitive Adhesives

Angewandte Chemie, EarlyView.
A grafting‐through alternating copolymerization strategy yields poly(norbornene sulfone) bottlebrush polymers with high molar mass. These materials function as additive‐free pressure‐sensitive adhesives. The incorporation of cleavable sulfone units enables rapid breakdown under mild alkaline conditions, providing a pathway toward sustainable, high ...
Clark Vu, Isaac D. Addo, Woojung Ham, Udita Choudhury, Joshua C. Worch, John B. Matson   +5 more
wiley   +2 more sources