Browsing by Author "Burgos, G. R."
Now showing items 1-6 of 6
-
Article
Flow development of Herschel-Bulkley fluids in a sudden three-dimensional square expansion
Burgos, G. R.; Alexandrou, Andreas N. (1999)The flow development of Herschel-Bulkley fluids in a sudden three-dimensional square expansion is studied numerically. The flow is modeled using the mixed-Galerkin finite element formulation to solve the conservation of ...
-
Article
On the determination of yield surfaces in Herschel-Bulkley fluids
Burgos, G. R.; Alexandrou, Andreas N.; Entov, V. (1999)Herschel-Bulkley fluids are materials that behave as rigid solids when the local stress τ is lower than a finite yield stress τ0, and flow as nonlinearly viscous fluids for τ > τ0. The flow domain then is characterized by ...
-
Conference Object
Rheology of semisolid suspensions
Alexandrou, Andreas N.; Burgos, G. R.; Entov, V. M. (Affiliation: Semisolid Processing Laboratory, Metal Processing Institute, WPI, Worcester, MA 01609, United StatesAffiliation: Polytech. University of Puerto Rico, Mechanical Engineering Department, San Juan 00918, Puerto RicoAffiliation: Institute for Problems in Mechanics, Russian Academy of Science, pr. Vemadskogo, 101, 117526 Moscow, Russian FederationCorrespondence Address: Alexandrou, A.N.Semisolid Processing Laboratory, Metal Processing Institute, WPI, Worcester, MA 01609, United States, 2000)The effective use of the semisolid process presumes a good theoretical framework to describe it. The understanding of semisolid behavior should be based upon a combination of basic and empirical knowledge in versatile ...
-
Article
Semisolid metal processing: A new paradigm in automotive part design
Alexandrou, Andreas N.; Burgos, G. R.; Entov, V. M. (2000)Processing of metal alloys in their mushy state represents a new trend in metal processing. The process produces components with low porosity, high crack resistance along with fine microstructure and mechanical properties ...
-
Article
Thixotropic rheology of semisolid metal suspensions
Burgos, G. R.; Alexandrou, Andreas N.; Entov, V. (2001)Understanding the time-dependent flow behavior of semisolid materials (SSM) is essential for the simulation of semisolid processes. During processing, the structure of the material changes with the processing history due ...
-
Conference Object
Thixotropy of semisolid metals
Alexandrou, Andreas N.; Burgos, G. R.; Entov, V. M. (Materials Research Society, 2000)Understanding the time-dependent flow behavior of metal alloys in semisolid state is essential for the further development of the process. In the present investigation, the thixotropic behavior of semisolid slurries is ...