Fracture Mechanics and Contact Problems in Materials Involving Graded Coatings and Interfacial Zones

2001 ◽  
Author(s):  
Fazil Erdogan
Keyword(s):  
Fracture Mechanics ◽  
Contact Problems ◽  
Graded Coatings

Periodic Contact Problems in Plane Elasticity: The Fracture Mechanics Approach

2017 ◽  
Vol 140 (1) ◽  
Author(s):  
Yang Xu ◽  
Robert L. Jackson
Keyword(s):  
Fracture Mechanics ◽  
Contact Region ◽  
Contact Problems ◽  
Plane Elasticity ◽  
Partial Slip ◽  
Tangential Load ◽  
Normal Contact ◽  
Material Contact ◽  
Interfacial Gap ◽  
Simply Connected

In this study, the concept of the fracture mechanics is used to solve the: (i) frictionless purely normal contact and (ii) the similar material contact under the mutual actions of the normal and tangential load. Considering the contact region is simply connected, the out-of-contact regions can be treated as periodic collinear cracks. Through evaluating the stress intensity factor (SIF), we are able to obtain the size and location of the contact/out-of-contact region. Then, the normal traction, shear traction and interfacial gap can be directly determined by the Green's function of the periodic collinear crack. In the case of frictionless purely normal contact, the new approach is applied to two classic problems, namely, the Westergaard problem (sinusoidal waviness punch) and the periodic flat-end punch problem. Then, the sinusoidal waviness contact pair in the full stick and the partial slip conditions under the mutual actions of the normal and tangential loads are solved by the newly developed approach.

Sign in / Sign up

Export Citation Format

Share Document