Transcript ESR Presentation

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ESTIMATION OF STRESS-STRAIN STATE
OF TUBULAR EXPLOSION CHAMBERS
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 Joo
Global Auto Clad Co.
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200 kg capacity chamber
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50 kg capacity chamber
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2,4 kg capacity chamber
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Axial stresses at the central tube
Capacity of the chamber: 1 – 2,4 kg; 2 – 50 kg; 3 – 200 kg
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Circular stresses at the central tube
Capacity of the chamber: 1 – 2,4 kg; 2 – 50 kg; 3 – 200 kg
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Stresses at the joining elements
Capacity of the chamber: 1 – 2,4 kg; 2 – 50 kg; 3 – 200 kg
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Criteria of modeling
P~V
σ < [σ] = σt,
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Dchh / P > 75
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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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 ar
e defined.
3. The strength of the chamber can be checked
only by constant monitoring of the dynamic
stresses at the most loaded elements at the
time. A certain experience of such work is
exist.
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