Results 21 to 30 of about 157,324 (326)

Lamin-A is Mechanosensitive to Matrix Stiffness and Couples to the Retinoic Acid Pathway in Differentiation [PDF]

Biophysical Journal, 2014
Matrix elasticity helps direct lineage specification of human bone marrow-derived MSCs in culture toward bone, fat, or other tissue types with mechanisms based in part on myosin-II generated stresses. We found with both gel systems and nano-collagen films that matrix rigidity leads to higher levels of nucleoskeletal protein lamin-A.
Ivanovska, Irena L., Swift, Joe, Discher, Dennis E.   +2 more
openaire   +1 more source

Prediction of interfacial debonding between stiff spherical particles and a soft matrix with the coupled criterion [PDF]

Theoretical and Applied Fracture Mechanics, 2020
Abstract The tensile load at debonding onset between stiff particles and a soft matrix is predicted with the coupled criterion which combines a stress and an energy conditions. A finite element model of a representative volume element is implemented in order to consider the influence of the size of the particles, the particle volume fraction, mixed ...
Martin, E., Leguillon, Dominique, Catapano, A., Carrère, Nicolas   +3 more
openaire   +3 more sources

Vehicle-Bridge Coupling Vibration Analysis for Simply Supported Girders of High-Speed Railway Bridges Based on the Cross-Sectional Decentralized Centre of Mass and Shear

Shock and Vibration, 2021
Taking the simply supported box girder bridge of high-speed railway as an example, the effect of cross-sectional decentralized centre of mass and shear on the spatial beam element stiffness matrix was theoretically derived.
Chen Daihai, Zhou Shuai, Xu Shizhan, Li Zheng, Fang Yilin   +4 more
doaj   +1 more source

Elastic load coupling with tailored elastomer composites

Composites Part C: Open Access, 2021
This study identifies a unique performance benefit in flexible composite laminates through evaluation of the load-coupling potentials once an external stimulus triggers extensional loadings.
M.R. Mansouri, P.F. Fuchs
doaj   +1 more source

A convenient scheme for coupling a finite element curvilinear mesh to a finite element voxel mesh: application to the heart

BioMedical Engineering OnLine, 2006
Background In some cases, it may be necessary to combine distinct finite element meshes into a single system. The present work describes a scheme for coupling a finite element mesh, which may have curvilinear elements, to a voxel based finite element ...
Hopenfeld Bruce
doaj   +1 more source

Comparison of Tensile Properties and Mechanical-Dynamic Analysis of Poly-Lactic Acid / Poly-Ethylene Compounded with Natural Fibers [PDF]

تحقیقات علوم چوب و کاغذ ایران, 2018
In this study, the tensile and dynamic-mechanical properties of composites made by poly-lactic acid polymer (PLA) and high density polyethylene (HDPE) as matrix and sawdust to reinforcement 30 % weight were investigated.
Hamid Ibaghi esfahani, mehdi kalagar, hosien sepahri rad   +2 more
doaj   +1 more source

A Multiple Step Active Stiffness Integration Scheme to Couple a Stochastic Cross-Bridge Model and Continuum Mechanics for Uses in Both Basic Research and Clinical Applications of Heart Simulation

Frontiers in Physiology, 2021
In a multiscale simulation of a beating heart, the very large difference in the time scales between rapid stochastic conformational changes of contractile proteins and deterministic macroscopic outcomes, such as the ventricular pressure and volume, have ...
Kazunori Yoneda, Jun-ichi Okada, Jun-ichi Okada, Masahiro Watanabe, Seiryo Sugiura, Toshiaki Hisada, Takumi Washio, Takumi Washio   +7 more
doaj   +1 more source

Dynamic modeling and characteristic analysis of the periodically coupled plate structure based on the dynamic stiffness method

Results in Physics, 2018
In this paper, the dynamic model of periodically coupled plate structure is formulated by the dynamic stiffness method (DSM). Geometrical construction is assumed to vary periodically in the whole plate structure.
Chunyu Zhang, Hu Ding, Hailong Chen, Guoyong Jin, Tiangui Ye, Yukun Chen   +5 more
doaj   +1 more source

Exact Stiffness for Beams on Kerr-Type Foundation: The Virtual Force Approach

Journal of Applied Mathematics, 2013
This paper alternatively derives the exact element stiffness equation for a beam on Kerr-type foundation. The shear coupling between the individual Winkler-spring components and the peripheral discontinuity at the boundaries between the loaded and the ...
Suchart Limkatanyu, Woraphot Prachasaree, Nattapong Damrongwiriyanupap, Minho Kwon, Wooyoung Jung   +4 more
doaj   +1 more source

Research on High Precision Stiffness Modeling Method of Redundant Over-Constrained Parallel Mechanism

Sensors, 2023
Traditional stiffness modeling methods do not consider all factors comprehensively, and the modeling methods are not unified, lacking a global stiffness model.
Sen Wang, Haoran Li, Xueyan Han, Jiahao Wei, Tao Zhang, Shihua Li   +5 more
doaj   +1 more source