The stability of elastic elements in a deformed state with initial structural form imperfections for truss elements with rigid nodes was studied

Abstract. Goal.The stability of elastic elements in a deformed state with initial imperfections the structural form for truss rigid and nodes was studied. Method. The operation compressed trusses welded joints is most accurately described by model which one support other has resistance conditions. According to methodology parameters, analytical method from solution differential equation rod stability, system algebraic equations obtained, describes an deviations. results. Numerical studies at various deviations, force impact elasticity parameters were carried out. on displacement supports, - angle rotation support, as well different stiffness characteristics influence loading factor have been non-linear nature growth calculated bending moments maximum deflections established. In case longitudinal bending, when adopting occurs faster than increase deflections. Regularities between axis deviations are developed improved methodological approach makes it possible determine deformation centrally rods obtained during construction, installation, or structure.Scientific novelty. On basis generalized theoretical rod, taking into account conducted numerical studies, identifying regularities load-bearing capacity imperfections, Metod improved. Practical significance. results make clarify stress-strain nodes, revealed supports.