Results 21 to 30 of about 292,662 (276)

An Incremental Cohesive Law for Delamination Under a Mixed Mode Loading

Frontiers in Materials, 2020
Cohesive zone models rely on the formulation of a cohesive constitutive law. The latter describes the relation between displacement and traction in a cohesive element at an integration point.
Man Zhu, Man Zhu, Larissa Gorbatikh, Stepan V. Lomov, Stepan V. Lomov   +4 more
doaj   +1 more source

Development of a constitutive law for numerical simulation of artificial leaflet-structures for transcatheter heart valve prostheses

Current Directions in Biomedical Engineering, 2019
While the current generation of devices for minimally invasive treatment of severe symptomatic aortic valve stenosis is based on xenogenic leaflet-material, artificial polymeric leaflet-structures represent a promising approach for future improvement of ...
Pfensig Sylvia, Arbeiter Daniela, Kohse Stefanie, Grabow Niels, Schmitz Klaus-Peter, Kaule Sebastian, Stiehm Michael, Siewert Stefan   +7 more
doaj   +1 more source

A constitutive law for dense granular flows

, 2006
A continuum description of granular flows would be of considerable help in predicting natural geophysical hazards or in designing industrial processes. However, the constitutive equations for dry granular flows, which govern how the material moves under ...
A Daerr, A Lemaître, C Ancey, C Josserand, D Ertas, D Fenistein, D Howell, DC Drucker, DM Mueth, F Da Cruz, GDR MiDi group, On dense granular flows, HM Jaeger, I Goldhirsch, I Iordanoff, IS Aranson, L Bocquet, LE Silbert, LS Mohan, O Pouliquen, O Pouliquen, O Pouliquen, Olivier Pouliquen, P Jop, P Mills, Pierre Jop, RI Tanner, SB Savage, SB Savage, T Börzsönyi, V Kumaran, Y Forterre, Yoël Forterre   +31 more
core   +6 more sources

Thermobaric Activation of Fault Friction

Geophysical Research Letters
The constitutive behavior of faults intervenes in virtually every aspect of the seismic phenomenon but is poorly understood, particularly regarding how effective normal stress affects the boundaries of the seismogenic zone.
S. Barbot, S. E. Guvercin, L. Zhang, H. Zhang, Z. Yang   +4 more
doaj   +1 more source

Mechanics of densely packed snow across scales: A constitutive modelling strategy based on the 3-D H-model

Journal of Glaciology
In many technical and geomechanics applications, for example tire and ski design or avalanche prediction, the capability to model the mechanical behaviour of snow is of high importance.
Marie Miot, Antoine Wautier, Pit Polfer, Pierre Philippe, Tibor Fülöp, François Nicot   +5 more
doaj   +1 more source

Whole blood viscosity modeling using power law, Casson, and Carreau Yasuda models integrated with image scanning U-tube viscometer technique [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2017
This study presented the image scanning U-tube viscometer technique to measure the whole blood viscosity. Two different constitutive models, power law and Casson, were selected to calculate blood viscosity.
Yotsakorn Pratumwal, Wiroj Limtrakarn, Sombat Muengtaweepongsa, Phatsawadee Phakdeesan, Suttirak Duangburong, Patipath Eiamaram, Kannakorn Intharakham   +6 more
doaj   +1 more source

Stability of parallel/perpendicular domain boundaries in lamellar block copolymers under oscillatory shear

, 2006
We introduce a model constitutive law for the dissipative stress tensor of lamellar phases to account for low frequency and long wavelength flows. Given the uniaxial symmetry of these phases, we argue that the stress tensor must be the same as that of a ...
de Gennes P. G., Jorge Viñals, Larson R. G., Zhi-Feng Huang   +3 more
core   +1 more source

KLK7 overexpression promotes an aggressive phenotype and facilitates peritoneal dissemination in colorectal cancer cells

FEBS Open Bio, EarlyView.
KLK7, a tissue kallikrein‐related peptidase, is elevated in advanced colorectal cancer and associated with shorter survival. High KLK7 levels in ascites correlate with peritoneal metastasis. In mice, KLK7 overexpression increases metastasis. In vitro, KLK7 enhances cancer cell proliferation, migration, adhesion, and spheroid formation, driving ...
Yosr Z. Haffani, Tobias Dreyer, Meriem Naim, Rea Lo Dico, Natalia A. Ignatenko, Viktor Magdolen, Dalila Darmoul   +6 more
wiley   +1 more source

Dense granular flows: two-particle argument accounts for friction-like constitutive law with threshold [PDF]

, 2008
A scalar constitutive law is obtained for dense granular flows, both in the inertial regime where the grain inertia dominates, and in the viscous regime.
Gay, Cyprien, Rognon, Pierre
core   +2 more sources

A Virtual Element Method for elastic and inelastic problems on polytope meshes [PDF]

, 2015
We present a Virtual Element Method (VEM) for possibly nonlinear elastic and inelastic problems, mainly focusing on a small deformation regime. The numerical scheme is based on a low-order approximation of the displacement field, as well as a suitable ...
da Veiga, L. Beirão, Lovadina, C., Mora, D.   +2 more
core   +1 more source