Influence of Friction Damping on Workpiece-Fixture System Dynamics and Machining Stability  

Oleh:

Fang, B. ; Kapoor, S. G. ; DeVor, R. E.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Manufacturing Science and Engineering vol. 124 no. 2 (May 2002), page 226-233.
Topik: fixture; influence; friction damping; workpiece - fixture system; machining stability

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ93.3 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

In this paper, a dynamic model that considers the vibrations of both the workpiece and fixture elements in order to accurately predict the friction damping over a wide range of clamping forces has been developed. The model is established based on the theory of variational inequality and solved via a nonlinear FEM. It is shown that the model is capable of predicting the system dynamics over a wide range of clamping forces. It is also demonstrated that the increasing then decreasing trend of the damping ratio caused by "interface locking" is due to the relative velocity change at the contact interface. With multiple contact interfaces, the "locking" occurs sequentially. Finally, the model is used to study the influence of friction damping on machining process stability.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali