Results 71 to 80 of about 24,395 (343)

Brain stiffens post mortem

Journal of the Mechanical Behavior of Biomedical Materials, 2018
Alterations in brain rheology are increasingly recognized as a diagnostic marker for various neurological conditions. Magnetic resonance elastography now allows us to assess brain rheology repeatably, reproducibly, and non-invasively in vivo. Recent elastography studies suggest that brain stiffness decreases one percent per year during normal aging ...
Weickenmeier, J., Kurt, M., Ozkaya, E., de Rooij, R., Ovaert, T.C., Ehman, R.L., Pauly, K.Butts, Kuhl, E.   +7 more
openaire   +2 more sources

Adjoint approach sensitivity analysis of thin‐walled beams and frames

Journal of Civil Engineering and Management, 2005
Sensitivity analysis of beams and frames assembled of thin‐walled members is presented within the adjoint approach. Static loads and structures composed of thin‐walled members with the bisymmetrical open cross‐section are considered.
Ireneusz Kreja, Tomasz Mikulski, Czeslaw Szymczak   +2 more
doaj   +1 more source

Membrane Wrapping for High Capacity and Rapidly Switchable Adhesives

Advanced Functional Materials, EarlyView.
A membrane‐wrapping mechanism enables high‐capacity, rapidly switchable adhesion by coupling suction, friction, and adhesion. Broadband performance is achieved in dry and underwater conditions, allowing fast, reversible manipulation of objects of diverse sizes and shapes, from delicate eggs and berries to flat, complex, or heavy objects. These outcomes
Yeunhee Kim, Camryn A. Mills, Michael D. Bartlett   +2 more
wiley   +1 more source

Effect of rotating speed and stiffeners on natural frequency of composite shell [PDF]

فصلنامه علوم و فناوری فضایی, 2011
The effect of rotating speed and stiffeners on vibrations for composite rotors is investigated using Sander's shell theory. The frequency equation is derived implementing the Rayleigh-Ritz procedure based on energy method.
A. A. Jafari, A. Mozafari, M. Maghsoudi Mehrabani   +2 more
doaj  

Nonlinear postbuckling of eccentrically stiffened functionally graded plates and shallow shells

Vietnam Journal of Mechanics, 2011
The paper deals with the formulation of governing equations of eccentrically stiffened functionally graded plates and shallow shells based upon the classical shell theory and the smeared stiffeners technique taking into account geometrical nonlinearity ...
Dao Huy Bich, Vu Hoai Nam, Nguyen Thi Phuong   +2 more
doaj   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

RESEARCH ON LAYOUT OF LARGE VIBRATING SCREEN SIDE PANEL STIFFENERS BASED ON TOPOLOGY OPTIMIZATION

Jixie qiangdu, 2015
In order to optimize the layout of the large vibrating screen side panel stiffeners,Topology optimization design was applied in structural design of the side panel stiffeners.
WANG ChunHua, ZHAO DongHui
doaj  

Vibration analysis of stiffened plates using finite element method

Latin American Journal of Solids and Structures
This paper presents the vibration analysis of stiffened plates, using both conventional and super finite element methods. Mindlin plate and Timoshenko beam theories are utilized so as to formulate the plate and stiffeners, respectively.
Shahed Jafarpour Hamedani, Mohammad Reza Khedmati, Saeed Azkat   +2 more
doaj   +1 more source

Static and dynamic analyses of stiffened folded laminate composite plate

Vietnam Journal of Mechanics, 2013
This paper presents some numerical results of bending and vibration analyses of an unstiffened and stiffened folded laminate composite plate using finite element method. The effects of fiber orientations, boundary conditions, stiffener conditions of the
Tran Ich Thinh, Bui Van Binh, Tran Minh Tu   +2 more
doaj   +1 more source

Micro and Nanostructural Diversity of Lizard Osteoderm Capping Tissue in Relation to Mechanical Performance

Advanced Functional Materials, EarlyView.
This study shows that lizard osteoderm capping tissue is a hyper‐mineralized hydroxyapatite layer consistently covering the superficial osteoderm surface in those species studied here, yet it varies greatly in morphology, nanostructure, and mechanical performance across species.
Adrian Rodriguez‐Palomo, Marius Didziokas, Malene Siri Berg Jacobsen, Thorbjørn Erik Køppen Christensen, Innokenty Kantor, Mads Ry Vogel Jørgensen, Klaus Pagh Almtoft, Jesper Skovhus Thomsen, Anthony Herrel, Catherine J.A. Williams, Henrik Birkedal   +10 more
wiley   +1 more source