Finite Element Formulation of Over-Milking Process on Bovine Teats at Different Size with Linear Elastic Properties
Makaleler > Tam Makale · 2006
Yazarlar: Hülya Öz, Adnan DEĞİRMENCİOĞLU, H. Bi̇lgen
\n Volume: 2, Issue: 4\n 363-368\n \n, Uluslararası, 2006, cilt 2, ss 363-368
Özet
This is intended as an interim report of the findings obtained from the simulation based study on teats using Finite Element Method (FEM). The objective of this study was to simulate teat behavior during milking phase in machine milking and to find out the differences or similarities in stresses and displacements as a result of variable teat size with linear elastic properties using finite element method. For this purpose, fresh excised teats obtained from a private company were investigated from the point of their dimensions in order to create models for the simulations. The teats considered for the simulations were 40, 60 and 80 mm long and they were assumed to be conical in shape and half of the teats were modeled in 3-D assuming the teats are symmetrical around longitudinal (y) axis. The simulations were carried out in software called “Marc”. It was also assumed that there exists no-milk in teats and as a result of this assumption, the study became the simulation of over-milking process which has critical importance from the point of udder health. The necessary boundary conditions to the teats were assigned and the linear elastic behavior of the teats was simulated. Based on the results obtained from the simulation based study, it was concluded that the differences in length did not alter the level of normal and shear stresses in teats but the displacements especially in longitudinal axis changed.