Abstract

Assuming a rigid viscoplastic material model, it is shown thatthe velocity fields adjacent to surfaces of maximum friction mustsatisfy sticking conditions. This means that the stress boundarycondition, the maximum friction law, may be replaced by the velocityboundary condition. Axisymmetric flows without rotation and planar flowsare considered. Applications of the upper bound theorem are discussed.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call