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Механики XXI веку. №16 2017 г.
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тании «изгиб/растяжение», имеет погрешность в сравнении с точным. В связи с этим, необ-
ходимо дальнейшее изучение влияния жесткости опор в стержневых системах при изгибе.
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Constraint redundancy disclosure in symmetric rod structures taking
into account constraint compliance
Gorunovich S.B.
Ust-Ilimsk thermal power plant, Public company “IRKUTSKENERGO”, Ust-Ilimsk, 666684, Russian Federa-
tion
Gorunovich@rambler.ruKeywords:
symmetric rod structure, constraint redundancy
In this study we present a summary of characteristics of existing methods of constraint redundancies
disclosure in rod structures. The excessive complications of existing analytical calculations and the depend-
ence of those results from taken analysis models we brought into view. We revealed that one of the factors,
influencing the analysis model perfection, is whether constraint compliance was taken into account or not.
So we
show the alternative simplified method of disclosure constraint redundancies on the symmetric rod
structure strength calculation example, taking into account the constraint compliance. We discovered the
internal force value dependence of the distance from the point of application of load force in symmetric rod
structures with constraint redundancies (including beams under longitudinal and transverse bending). The
internal force value dependence of constraint compliance is also revealed. All dependences are confirmed by
calculation examples. We underlined the relevance of the proposed simplified method presenting more com-
plex structure examples. We made the conclusion about the possibility of using alternative way of constraint
redundancy disclosure in the symmetric rod structures under tension and bending. However, further re-
search on simplified methods of strength calculations, taking into account constraint compliance in symmet-
ric beam structures is necessary.