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Dobrushin L.D., Brizgalin A.G, Cherkashin A.V.

The Paton Electric Welding Institute,

Ssang Keun Lee, Jung IL Kim, Gi Bong Kwak,

Woo Chan JooGlobal Auto Clad Co.

ESTIMATION OF STRESS-STRAIN STATE OF TUBULAR EXPLOSION

CHAMBERS

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2 200 kg capacity chamber

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3 50 kg capacity chamber

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4 2,4 kg capacity chamber

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5 Axial stresses at the central tube

Capacity of the chamber: 1 – 2,4 kg; 2 – 50 kg; 3 – 200 kg

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Capacity of the chamber: 1 – 2,4 kg; 2 – 50 kg; 3 – 200 kg

Circular stresses at the central tube

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Capacity of the chamber: 1 – 2,4 kg; 2 – 50 kg; 3 – 200 kg

7 Stresses at the joining elements

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8 Criteria of modeling

P ~ Vσ < [σ] = σt,

75>P/hD 3ch

P – capacity of the chamber;V – internal volume of the chamber;σ – max dynamic stresses at the elements of

the chamber;σt – yield point of the chamber steel;Dch – internal diameter of the chamber.

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9 Conclusions

1. The criteria of tubular explosion chamber modeling are elaborated. They allow to determine approximate parameters of chamber with new capacity.

2. The most loaded elements of tubular chamber are defined.

3. The strength of the chamber can be checkedonly by constant monitoring of the dynamicstresses at the most loaded elements at the time. A certain experience of such work is exist.