Experimental and numerical simulation of impact of thin plates with loss of contact between plates and impactor

V. Grolleau; G. Rio; H. Laurent; N. Couty; Fanch le Merdi

doi:doi:10.1051/jp4:2000983

Issue		J. Phys. IV France Volume 10, Number PR9, September 2000 EURODYMAT 2000 - 6th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		Pr9-497 - Pr9-502
DOI		https://doi.org/10.1051/jp4:2000983

EURODYMAT 2000 - 6th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading

J. Phys. IV France 10 (2000) Pr9-497-Pr9-502
DOI: 10.1051/jp4:2000983

Experimental and numerical simulation of impact of thin plates with loss of contact between plates and impactor

V. 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

Abstract
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.