Stress Increment in the Circular Hollow Cylinder Caused by the Explosions on the Outer Boundary

概要

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Stress increment in the circular hollow cylinder caused by the simultaneous explosions of the two line explosives set on the symmetrical position of the outer boundary of it, is analysed numerically. The hollow cylinder is assumed to be made of a rubber like material, simulating the solid fuel of the rocket motor, and the constitutive equations for the material are assumed to be represented by the linear Hook's equations. An explosion at the outer boundary of the hollow cylinder causes the radial motion of the particles from the center of the shock at the first stage and converges to the motion in r-direction ultimately in accordance with the abrupt increase of the stress near the inner surface of the hollow cylinder, under such assumption that the displacement of the outer boundary is constrained and that of the inner one is free.
宇宙航空研究開発機構の論文