Prediction of dynamic response of machine tool by sub-structure analysis

Movahhedy, M. R ; Sharif University of Technology | 2004

66 Viewed
  1. Type of Document: Article
  2. Publisher: 2004
  3. Abstract:
  4. Stability analysis of machine tool requires determining of frequency response function (FRF) of spindle. Since this response is changed with a change of tool, Receptance coupling sub-structuring analysis may be used to couple the tool and spindle FRFs. A major difficulty in this regard is the determination of joint model between the two sub-structures. In particular, the identification of rotational DOFs at joints is difficult. In this research, a joint model which accounts for rotational DOFs is proposed and verified which does not require any rotational DOF measurement on machine tool. An optimization method based on genetic algorithm is employed to find parameters of the joint model. Receptance coupling analysis is used to couple the machine tool and tool FRFs obtained from experiment and FE, respectively. The results are verified through comparison with experimental results. © IMechE 2004
  5. Keywords:
  6. Degrees of freedom (mechanics) ; Dynamic response ; Genetic algorithms ; Joints (structural components) ; Machining ; Mathematical models ; Optimization ; Structural analysis ; Vibrations (mechanical)
  7. Source: Eighth International Conference on Vibrations in Rotating Machinery, Swansea, 7 September 2004 through 9 September 2004 ; Volume 2004 2 , 2004 , Pages 141-151 ; 13561448 (ISSN)