APPLICATION OF FINITE ELEMENT ANALYSIS, COMPONENT MODE SYNTHESIS AND MODAL TEST DATA IN THE DEVELOPMENT OF ROTARY ACTUATORS IN HIGH PERFORMANCE, 5.25 INCH WINCHESTER DISK DRIVES

摘要

MSC-NASTRAN and PATRAN-G along with an APOLLO 660 engineering work station was used to successfully integrate finite element analysis with the design cycle in the development of rotary actuators. In this paper a review of the modeling effort in the V100 series actuator is presented. The use of MSC-NASTRAN in modeling the 3370 load beam is given. From the solution for one 3370 recording Load Beam, component mode synthesis was used replicate the load beams and solve for the normal modes of the actuator/load beam structural system. The comparison of experimentally measured mode shapes along with computed mode shapes is excellent up to 3000 HZ. The comparison of the computed open loop mechanical transfer functions along with experimental data is also presented. Finally, experiences with the APOLLO 660 workstation running MSC-NASTRAN, PATRAN and UNIX are briefly covered.