The Paton Welding Journal, 2012, #4, 2-5 pages
CALCULATION OF LOCAL STRESSES IN WELDED JOINT ZONES OF LARGE-SIZED SPACE STRUCTURES
V.I. KYRIAN, V.I. DVORETSKY and M.G. MALGIN
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
An approach to calculation of local stresses in zones of welded joints on structures has been developed. The approach is based on introducing absolutely rigid bodies (ARB) in the form of plane sections into the calculation model. According to plane section hypothesis, ARB provides an adequate transfer of external force effects from one fragment model to another, and permits local distribution of stresses in the zones of the welded joints to be investigated, taking into account the 3D work of the entire structure, thus providing a qualitatively new tool to allow for service loading of elements in evaluation of fatigue life.
large-sized space structures, welded joints, local stresses, finite-element method, finite-element model, absolutely rigid body, calculation
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