Prediction of Nonlinear Dynamic Impact Force History by Finite Element Method

• DOI: 10.25103/jestr.113.07
• Publication Date: 2018-10-03T09:08:39Z
• Authors: Harun Gokce
• Keywords: Impact; Piston (optics); Force dynamics; Contact force; Load cell; Restoring force; Reaction; Experimental data; Dynamic testing

This paper presents a new methodology for prediction of nonlinear dynamic impact force by experimental and numerical methods.Conventionally in simulations contact or reaction outputs are used loads, however those not valid cases.Therefore, unlike literature, load cell is modelled spring damper elements.In analyses Johnson-Cook material model since it the most suitable impact.To measure different velocities, an setup was built.In setup, adjustable pneumatic piston which as impactor hits fixed pin on rod collects force.Measured compared with simulation results.A qualitative agreement obtained between predictions results lateral conditions.The bending partial failure during test also post-test damage photos results.