Abstract
This book chapter presents comprehensive investigations on the use of magnetorheological (MR) shock absorber to mitigate the effect of impact loading, with emphasis on the recoil system. A physical model of the field gun is established and a long-stroke MR recoil absorber with four-stage parallel electromagnetic coils is designed to apply separate current respectively and generate variable magnetic field distributions in the annular flow channel. The response time and the compensation method are investigated to facilitate the application. Based on the dynamic analysis and firing stability condition during the process of shock, the ideal recoil force-stroke profiles of MR absorber at different limiting firing angles are obtained. The experimental studies are carried out on the impact test rig under different combinations of current loading: conventional unified control mode, separate control mode and timing control mode.
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