Foot internal stress distribution during impact in barefoot running as function of the strike pattern

2018 ◽  
Vol 21 (7) ◽  
pp. 471-478 ◽  
Author(s):  
Enrique Morales-Orcajo ◽  
Ricardo Becerro de Bengoa Vallejo ◽  
Marta Losa Iglesias ◽  
Javier Bayod ◽  
Estevam Barbosa de Las Casas
Keyword(s):  
Stress Distribution ◽  
Internal Stress ◽  
Barefoot Running

scholarly journals Geometry and Dynamics of a Surge-type Glacier

1977 ◽  
Vol 18 (79) ◽  
pp. 181-194 ◽  
Author(s):  
R. Bindschadler ◽  
W. D. Harrison ◽  
C. F. Raymond ◽  
R. Crosson
Keyword(s):  
Steady State ◽  
Stress Distribution ◽  
Internal Stress ◽  
Ice Thickness ◽  
Surface Slope ◽  
Local Surface ◽  
Order Of Magnitude ◽  
Internal Deformation ◽  
Longitudinal Profiles ◽  
Similar Depth

AbstractMeasurement of geometry, motion, and mass balance from Variegated Glacier, Alaska portray conditions in this surge-type glacier close to the mid-point of its 20 year surge cycle. Comparison of longitudinal profiles of ice depth, surface slope, and surface speed indicate that the motion occurs largely by internal deformation assuming the ice deforms according to the experimental law of Glen. Surface speed is not noticeably affected by local surface slope on the scale of the ice thickness or smaller, but correlates well with slope determined on a longitudinal averaging scale about one order of magnitude larger than the ice depth. The rate of motion on Variegated Glacier agrees well with rates on non-surge type temperate glaciers which have similar depth and slope. Although the (low regime at the time of the measurements is apparently typical of temperate glaciers, a large discrepancy between the balance flux needed for steady state and the actual flux is indicative of a rapidly changing surface elevation profile and internal stress distribution.

Internal Stresses in Elastohydrodynamic Lubrication of Rolling/Sliding Contacts

1989 ◽  
Vol 111 (1) ◽  
pp. 180-187 ◽  
Author(s):  
Farshid Sadeghi ◽  
Ping C. Sui
Keyword(s):  
Shear Stress ◽  
Stress Distribution ◽  
Internal Stress ◽  
Maximum Shear Stress ◽  
Elastohydrodynamic Lubrication ◽  
Normal Pressure ◽  
Internal Stresses ◽  
Stress Distributions ◽  
Principal Stresses ◽  
Dimensionless Velocity

The internal stress distribution in elastohydrodynamic lubrication of rolling/sliding line contact was obtained. The technique involves the full EHD solution and the use of Lagrangian quadrature to obtain the internal stress distributions in the x, y, z-directions and the shear stress distribution as a function of the normal pressure and the friction force. The principal stresses and the maximum shear stress were calculated for dimensionless loads ranging from (2.0452 × 10−5) to (1.3 × 10−4) and dimensionless velocity of 10−10 to 10−11 for slip ratios ranging from 0 to pure sliding condition.

Comparison of Formulations for the Hydrostatic Stiffness of Flexible Structures

2009 ◽  
Vol 131 (2) ◽  
Author(s):  
H. R. Riggs
Keyword(s):  
Hydrostatic Pressure ◽  
Stress Distribution ◽  
Rigid Body ◽  
Pressure Distribution ◽  
Internal Stress ◽  
Flexible Structures ◽  
Restoring Force ◽  
The Relationship ◽  
Selection Of

The formulation for the hydrostatic stiffness (restoring force) for linear rigid body hydrodynamics is well known, whereas there are several formulations in literature for the corresponding stiffness of flexible structures. Which of these formulations to use is not immediately obvious. This paper clarifies the relationship and the differences between the formulations and the selection of the appropriate one. In addition, it will be shown that a general formulation of the hydrostatic stiffness for flexible structures involves the internal stress distribution under gravity loads, just as it does the corresponding hydrostatic pressure distribution.

Effects of Electrode Configurations on Internal Stress Distribution of Multilayer Actuators

2003 ◽  
Vol 785 ◽  
Author(s):  
Dong-Kyun Lee ◽  
Ji-Won Choi ◽  
Deuk-Young Han ◽  
Hyun-Jai Kim ◽  
Seok-Jin Yoon
Keyword(s):  
Numerical Simulation ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Electric Field ◽  
Internal Stress ◽  
Uniform Electric Field ◽  
Multilayer Actuator ◽  
Multilayer Actuators

ABSTRACTThe internal stress distribution in multilayer actuator was analyzed by a numerical simulation. Around the edge of conventional inter-digital electrodes, the non-uniform electric field generated the stress concentration, which caused the ceramic to crack. Various electrode configurations were presented to decrease this stress concentration. Especially the float electrode type is a promising design because this can be fabricated using almost the same process as the conventional multilayer actuator, and the simulated results indicted that the float electrode type decreased the stress concentration of inter-digital type in approximately 1/3.

Influence of Preparing of Specimen on Internal Stress Measurement of Aluminum Alloy Thick Plate

2010 ◽  
Vol 97-101 ◽  
pp. 2658-2663
Author(s):  
Kai Liao ◽  
Yun Xin Wu ◽  
Hai Gong
Keyword(s):  
Stress Distribution ◽  
Internal Stress ◽  
Surface Stress ◽  
Thick Plate ◽  
Stress Measurement ◽  
Stress Gradient ◽  
Real Surface ◽  
Measurement Results ◽  
Layer Removal Method ◽  
Internal Stress Measurement

The cut, a main preparing means of specimen, will cause a difference in stress distribution between thick plate and the specimen, so this article focuses on the topic of evaluating impact of the cut on stress measurement results. Firstly, the real surface stress distribution of the plate and specimen were determined by X-ray diffraction (XRD) and FEM. Secondly, according to the specimen dimension and machining procedure, the influence of the cut on internal stress measurement is obtained and compared with the FEM results. The conclusions are as follows: (1) the normal stress of cut plane steeply decreases and the stress gradient descends along with distance away from the cut. The range of distance is approximately one-thickness of specimen. (2) In order to obtain stable and reliable results, the plane size of specimen is taken three times larger than the thickness. (3) The milling processing of layer removal method (LRM) can change the surface stress state of specimen, but the machining effects on residual stresses can be removed by properly choosing milling parameters.

Internal stress distribution of X-ring using photoelastic experimental hybrid method

2014 ◽  
Vol 28 (5) ◽  
pp. 1697-1708 ◽  
Author(s):  
Alunda Ouma Bernard ◽  
Jai-Sug Hawong ◽  
Dong-Chul Shin ◽  
Hyun-Seok Lim
Keyword(s):  
Stress Distribution ◽  
Internal Stress ◽  
Hybrid Method ◽  
Photoelastic Experimental Hybrid Method
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