Analysis of the LOFT Modular Drag Disc Turbine Transducer (MDTT) Spring for Compressive Buckling

摘要

The LOFT Modular Drag Disc Turbine Transducer (MDTT) springs (for range 2, rhO V exp 2 = 4900 lbm/ft-sec exp 2 ) were analyzed to determine the static rhO V exp 2 load needed to cause a buckling failure. The static load needed to cause elastic buckling was found to be equivalent to a rhO V exp 2 value of 431,000 lbm/ft-sec exp 2 according to classical buckling theory, but could be as low as rhO V exp 2 = 100,000 lbm/ft-sec exp 2 due to uncertain end fixity and other spring imperfections. (ERA citation 04:013401)