TUBULAR EXPLOSION CHAMBERS DEFORMATION MODES IN TUBULAR EXPLOSION

TUBULAR EXPLOSION CHAMBERS DEFORMATION MODES IN TUBULAR EXPLOSION CHAMBERS EPNM-2010 (07 -11. 06. 2010) NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E. O. Paton Electric Welding Institute 1

TUBULAR EXPLOSION CHAMBERS 1. TITLE DEFORMATION MODES IN TUBULAR EXPLOSION CHAMBERS 2. AUTHORS Prof. L. D. Dobrushin, Ing. P. S. Shlonskyi, Dr. Yu. I. Fadeenko The E. O. Paton Electric Welding Institute (PWI) of NAS of Ukraine Department on Welding, Cutting and Treatment of Metals by Explosion 11 Bozhenko Str. , Kiev, 03680, Ukraine Tel. /fax: +380 -44 -289 -14 -70 E-mail: dobrushin@paton. kiev. ua 2

PART 1. HISTORY OVERVIEW OF R&D 3. CONCEPT DESIGN MOCK-UP 3

TUBULAR EXPLOSION CHAMBERS 4. TUBULAR CHAMBER IN 1: 30 SCALE Main Parameters: Inside Dia: 0. 25 m; Tubes Q-ty: 222; Tubes: Ø 22 x 0. 5 mm; Max charge: 0. 008 kg. 4

TUBULAR EXPLOSION CHAMBERS 5. TUBULAR CHAMBER IN 1: 10 SCALE Main Parameters: Inside Dia: 0. 85 m; Tubes Q-ty: 213; Tubes: Ø 72 x 1. 2 mm; Max charge: 0. 25 kg. 5

TUBULAR EXPLOSION CHAMBERS 5. TUBULAR CHAMBER IN FULL SCALE 6

TUBULAR EXPLOSION CHAMBERS 6. FIRST EXPERIMENTAL FULL-SCALE CHAMBER 200 kg TNT Tubular Chamber: a) under construction in 1975; b) the inside view. Note: It was Built up and Still Under Processing by PEWI in Glevakha (25 km from Kiev) 7

TUBULAR EXPLOSION CHAMBERS 7. SECOND INDUSTRIAL FULL-SCALE CHAMBER 200 kg TNT Capacity Tubular Explosion Chamber Located at the Test Ground of Yuzmash Plant (Dnepropetrovsk, Ukraine) a - Outside View; b - Inside View 8

TUBULAR EXPLOSION CHAMBERS 8. EXPLOSION IN FULL-SCALE CHAMBER Explosion of 50 kg of Ammonite mixture with open entrance (for demonstration) 9

TUBULAR EXPLOSION CHAMBERS 9. EXISTING PROJECTS FOR FULL-SCALE CHAMBERS 10

TUB 0 ULAR EXPLOSION CHAMBERS 10. ADVANTAGES OF DESIGN AND MANUFACTURE 11

PART 2. SEMI-AUTOMATIC CHAMBERS 11. S/A TUBULAR CHAMBER IN 1: 5 SCALE Inside Dia: 2. 0 m; Tubes Q-ty: 283; Tubes: Ø 140 x 4. 5 mm; Max charge: 4. 0 kg; Weight: 12 tons. 12

TUBULAR EXPLOSION CHAMBERS 12. STRAIN GAUGES GLUED TO RODS & TUBES 13

TUBULAR EXPLOSION CHAMBERS 13. TYPICAL TIME-HISTORY OF RODS & TUBES 14

TUBULAR EXPLOSION CHAMBERS 14. MODE OF DEFORMATION OF RODS & TUBES (1) Circumferential Stresses in Tubes Stresses in Rods 15

TUBULAR EXPLOSION CHAMBERS 15. MODE OF DEFORMATION OF RODS & TUBES (2) Axial Stresses in Tubes at 220 mm Distance 220 mm from the End Cap Circumferential Stresses in Tubes at 220 mm Distance from the End Cap 16