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To incorporate the effect of adhesion in Hertzian contact, Johnson, Kendall, and Roberts [5] formulated the JKR theory of adhesive contact using a balance between the stored elastic energy and the loss in surface energy. The JKR model considers the effect of contact pressure and adhesion only inside the area of contact.
Alan D. Roberts is a Tun Abdul Razak Research Centre (TARRC) scientist noted for his contributions to understanding contact phenomena in elastomers, and in particular the JKR equation. [ 2 ] Education
Pressure ulcers can trigger other ailments, cause considerable suffering, and can be expensive to treat. Some complications include autonomic dysreflexia, bladder distension, bone infection, pyarthrosis, sepsis, amyloidosis, anemia, urethral fistula, gangrene and very rarely malignant transformation (Marjolin's ulcer – secondary carcinomas in chronic wounds).
Finally there are the processes at the contact interface: compression and adhesion in the direction perpendicular to the interface, and friction and micro-slip in the tangential directions. The last aspect is the primary concern of contact mechanics. It is described in terms of so-called contact conditions. For the direction perpendicular to ...
The newspaper reports that "La Muñeca" plunged into the criminal underworld at age 18, and was at the time of her arrest in charge of coordinating targeted assassinations, and even killed her ex ...
Hannah Kobayashi, the Hawaii woman who was at the center of a Southern California missing persons investigation before authorities said she voluntarily crossed into Mexico, has been found safe ...
A new study suggests that a diet filled with protein and fiber may be the most effective for weight loss. Here's what a dietitian wants you to know.
Bearing pressure is a particular case of contact mechanics often occurring in cases where a convex surface (male cylinder or sphere) contacts a concave surface (female cylinder or sphere: bore or hemispherical cup). Excessive contact pressure can lead to a typical bearing failure such as a plastic deformation similar to peening.