Ansys Learning Forum Forums Discuss Simulation LS Dyna Drop Test Simulation of apple drop height = 2 meters Reply To: Drop Test Simulation of apple drop height = 2 meters

peteroznewman
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If the apple was 2 m above the ground, and you plot Deformation, the color will change as the apple falls because Deformation measures the distance from the starting point.  If you were to plot Stress, then the color wouldn't change as the apple falls because there is no change in stress as if falls.

Drop Test simulations are usually performed by positioning the object tanget to the ground and assigning the impact velocity to the object. That way no time is wasted simulating the free-fall.  All the simulation effort is on the deformation following the impact which occurs at T=0 seconds.