A mixed finite element model for plane strain elastic—plastic analysis Part II. Application to the 4-node bilinear element

1997 ◽  
Vol 141 (1-2) ◽  
pp. 81-93 ◽  
Author(s):  
A. Capsoni ◽  
L. Corradi
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Plane Strain ◽  
Mixed Finite Element ◽  
Element Model ◽  
Elastic Plastic ◽  
Plastic Analysis ◽  
Bilinear Element

High Velocity Oblique Impact and Coefficient of Restitution for Head Disk Interface Operational Shock

2009 ◽  
Vol 131 (2) ◽  
Author(s):  
Raja R. Katta ◽  
Andreas A. Polycarpou ◽  
Jorge V. Hanchi ◽  
Robert M. Crone
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Impact Damage ◽  
Element Model ◽  
Oblique Impact ◽  
Coefficient Of Restitution ◽  
Energy Losses ◽  
Elastic Plastic ◽  
Impact Angles ◽  
Operational Shock

With the increased use of hard disk drives (HDDs) in mobile and consumer applications combined with the requirement of higher areal density, there is enhanced focus on reducing head disk spacing, and consequently there is higher susceptibility of slider/disk impact damage during HDD operation. To investigate this impact process, a dynamic elastic-plastic finite element model of a sphere (representing a slider corner) obliquely impacting a thin-film disk was created to study the effect of the slider corner radius and the impact velocity on critical contact parameters. To characterize the energy losses due to the operational shock impact damage, the coefficient of restitution for oblique elastic-plastic impact was studied using the finite element model. A modification to an existing physics-based elastic-plastic oblique impact coefficient of restitution model was proposed to accurately predict the energy losses for a rigid sphere impacting a half-space. The analytical model results compared favorably to the finite element results for the range from low impact angles (primarily normal impacts) to high impact angles (primarily tangential impacts).

Application of an Elastic-Plastic Finite Element Model for the Simulation of Forming Processes

1991 ◽  
pp. 672-675
Author(s):  
A. van Bael ◽  
P. van Houtte ◽  
E. Aernoudt ◽  
I. Pillinger ◽  
P. Hartley ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Elastic Plastic
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