Hertzian impact of two elastic spheres in the presence of surface damping

1980 ◽  
Vol 35-35 (3-4) ◽  
pp. 285-290 ◽  
Author(s):  
G. Horvay ◽  
M. A. Veluswami
Keyword(s):  
Hertzian Impact

scholarly journals The Role of Friction and Tangential Compliance on the Resultant Launch Angle of a Golf Ball

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 27
Author(s):  
Erik Henrikson ◽  
Paul Wood ◽  
Chris Broadie ◽  
Tom Nuttall
Keyword(s):  
Theoretical Model ◽  
Coefficient Of Friction ◽  
Coulomb Friction ◽  
Golf Ball ◽  
Golf Club ◽  
The Coefficient Of Friction ◽  
Hertzian Impact ◽  
The Relationship ◽  
Launch Angle

A thorough understanding of how the delivered face angle and club path of a golf club influences the initial launch direction of a golf ball can play a significant role in the design of various club types as well as help players and coaches better understand performance in the field. A theoretical model based on a Hertzian impact formulation with the inclusion of tangential compliance via Coulomb friction is compared to empirical results. This comparison demonstrates that the initial launch direction of a golf ball for a given club path and face angle can be sufficiently predicted by the theoretical model, providing insights into the mechanisms leading to different launch direction percentages relative to face angle for various club types. Additionally, the relationship between launch direction and the coefficient of friction is explored for various angles of incidence.

Analysis of Impact-Induced Head Disk Interface Damage During Op-Shock

2005 ◽  
Author(s):  
Ning Yu ◽  
Andreas A. Polycarpou ◽  
Jorge V. Hanchi
Keyword(s):  
Contact Radius ◽  
Head Disk Interface ◽  
Normal Impact ◽  
Disk Interface ◽  
Impact Theory ◽  
Contour Plots ◽  
Force Contact ◽  
Hertzian Impact ◽  
Contact Parameters ◽  
Impact Duration

Hertzian impact theory is used to analyze impact-induced head disk interface (HDI) contact damage. Contact parameters including penetration (media damage), contact force, contact radius, impact duration, maximum and mean contact pressure are given at different normal impact velocities and slider corner radii in the form of contour plots. The results clearly suggest that the decrease of impact velocity or the increase of corner radius could both reduce the possibility of plastic deformation due to slider (head) disk impact contact.

Hertzian Impact Fracture Test for Helicopter Windshields

1986 ◽  
pp. 197-209
Author(s):  
M. M. Abou-el-leil ◽  
Frank A. Camaratta ◽  
Rocco R. DiGenova
Keyword(s):  
Impact Fracture ◽  
Fracture Test ◽  
Hertzian Impact

Computer model for Hertzian impact

1991 ◽  
Vol 10 (21) ◽  
pp. 1271-1274
Author(s):  
R. Akcakaya ◽  
J. R. Varner
Keyword(s):  
Computer Model ◽  
Hertzian Impact
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