J. Phys. IV France 10 (2000) Pr9-497-Pr9-502
Experimental and numerical simulation of impact of thin plates with loss of contact between plates and impactorV. Grolleau1, G. Rio1, H. Laurent1, N. Couty2 and Fanch le Merdi3
1 LG2M, Université de Bretagne Sud, rue de Saint Maudé, 56325 Lorient cedex, France
2 IRCN, Nantes, France
3 GERBAM, Lorient, France
The present investigation is concerned with the impact of thin plates used in chip building. The problem is studied both numerically with a particular finite element resolution and experimentally with an apparatus propelling the projectile with a crossbow. The initial speed of the projectile is about 30m/s. Loss of contact has been detected between the plate and the projectile during the impact. Presumably, the loss of contact is due to waves propagating in the plate and in the projectile. Strain gages are used to study the flexural waves propagating along the plate.
© EDP Sciences 2000