STRESSED-STRAINED STATE ANALYSIS OF MATERIAL OF PIPES BEING JOINED TOGETHER UNDER HIGH-SPEED DEFORMATION CONDITIONS S. A. KOROBOV, V. N. GULBIN and I. S. NIKITIN J. Phys. IV France, 01 C3 (1991) C3-235-C3-239 DOI: 10.1051/jp4:1991332