title: Influence of ultrasonics on upsetting of a model paste.
abstract: This paper describes a preliminary study of the influence of ultrasonics on the boundary conditions associated with the equipment walls in a soft solid forming operation using Plasticine as a material model. A detailed finite element analysis is described involving the upsetting of a cylindrical specimen between two parallel rigid dies with kinematics and ultrasonic oscillatory loading conditions. A series of squeeze flow experiments has been conducted to validate the finite element models. The oscillation parameters were measured using a 3D laser Doppler vibrometer to complement the measurement of reaction forces.
authors.affiliation: Department of Mechanical Engineering, University of Glasgow, UK.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Huang
authors.forename: Margaret
authors.initials: M
authors.lastname: Lucas
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Adams