SHOCK ANALYSIS USING THE PSEUDO VELOCITY SHOCK SPECTRUM - PART 1-(PPT)

摘要

Points to Learn: Shock spectrum definitions. Equations: Conceptual and Practical. Calculate; Do loop, Filter, Residual. Plotting SS's with PV as ordinate on (4CP) log-log four coordinate paper. Proofs that stress is proportional to velocity for rods, beams, plates. Fundamental Maximum modal velocities. Shock data needs least range in velocities. PV use: Civil/Structural, nuclear defense, Army Conventional Weapons Effect, Earthquake. Hall's chapter in Shock and Vibration Hdbk. (PV){sup}2, energy, severe frequencies. PVSS on 4CP asymptotes: peak displ, severity or vel change, and peak accel. PV vs Rel Vel, low freq. problem. Integrated shock presentation.