Physiology of Muscle Activation and Force Generation

2016 ◽  
pp. 1-29
Author(s):  
R. M. Enoka ◽  
J. Duchateau
Keyword(s):  
Muscle Activation ◽  
Force Generation

Lack of myostatin in mice results in excessive muscle but impaired force generation, tubular aggregates and alterations in fibre type profile

2005 ◽  
Vol 36 (02) ◽  
Author(s):  
H Amthor ◽  
R Navarette ◽  
SC Brown ◽  
R Macharia ◽  
F Muntoni ◽  
...  
Keyword(s):  
Fibre Type ◽  
Force Generation ◽  
Tubular Aggregates

Some Consequences of Coulomb Friction in Modeling Longitudinal Traction

1990 ◽  
Vol 18 (1) ◽  
pp. 13-65 ◽  
Author(s):  
W. W. Klingbeil ◽  
H. W. H. Witt
Keyword(s):  
Shear Force ◽  
Coulomb Friction ◽  
Interfacial Shear ◽  
Force Generation ◽  
Behavior Patterns ◽  
Inflation Pressure ◽  
Friction Law ◽  
The Coefficient Of Friction ◽  
Coulomb Friction Law ◽  
Perfect Adhesion

Abstract A three-component model for a belted radial tire, previously developed by the authors for free rolling without slip, is generalized to include longitudinal forces and deformations associated with driving and braking. Surface tractions at the tire-road interface are governed by a Coulomb friction law in which the coefficient of friction is assumed to be constant. After a brief review of the model, the mechanism of interfacial shear force generation is delineated and explored under traction with perfect adhesion. Addition of the friction law then leads to the inception of slide zones, which propagate through the footprint with increasing severity of maneuvers. Different behavior patterns under driving and braking are emphasized, with comparisons being given of sliding displacements, sliding velocities, and frictional work at the tire-road interface. As a further application of the model, the effect of friction coefficient and of test variables such as load, deflection, and inflation pressure on braking stiffness are computed and compared to analogous predictions on the braking spring rate.

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