Estimation of Stability of Central Compressed Rods of Structural Coatings Taking into Account Structural Features of Knot Connections and Nonlinear Work of Material
Journal Title: Металлические конструкции - Year 2018, Vol 24, Issue 3
Abstract
The paper presents the analysis of the stability of centrally compressed rods, taking into account the structural features of the node joints for which the models of volume finite element rods are made, the analysis of the stress-strain state of 6 standard sizes of tubular elements according to GOST 10704-91 «Electrically welded steel welded pipes» (in the range from 1144 to 15912 mm) in the software package of the LIRA-CAD family. The calculation is performed in a physically nonlinear setting in the elasto-plastic stage of the material. In the analysis of stability, the stability factor was analyzed from the results of nonlinear calculation (kf.s). Refined values of the critical force (Ncr, e.p.s) are presented. The obtained data were compared with the values of the critical force determined by DBN B.2.6-198:2014 «Steel structures» (Ncr, DBN). With the help of multiple linear regression, a generalized approximating relationship between significant factors influencing the refined value of the critical force (Ncr) and the value of the total deviation (ypr+ymax/l) is established in the Microsoft Excel program.
Authors and Affiliations
Yevgen Gorokhov, Anton Tanasoglo, Alexander Mushchanov
Keywords
Related Articles
- EP ID EP536585
- DOI -
- Views 107
- Downloads 0
The Method of Determination of Mounting Stress-Strain State-Span Hinge-Rod Metal Coatings
The article made overview previous studies in installation loads and geometrical deviàtions. The article shows the methodology and findings of the mounting stress-strain state-span hinged-rod metal coating by taking into...
Analysis of the influence of structural features of nodal connections on the load-carrying capacity of centrally compressed rods of structural coatings
The article presents the analysis of the stability of centrally compressed rods with initial geometric imperfections, performed with the help of volumetric finite element modeling of rods taking into account the design f...
Influence of Forced Displacement of Earth Surface in Undermining Area on the Stress-Strain State of Multistoried Frame Building
In the article the analysis by the influence of forced displacement of earth surface in an undermining area to additional forces distribution in the elements of multistoried frame building with different rigidity of base...
The Method of Wind Load Formation in the Group Arrangement of Tanks
The article discusses the methods of wind load formation, by clarifying the values of aerodynamic coefficients for previously unexplored structural forms and taking into account the group location. The main approaches to...
Updated Assessment of Joint Work of Thin-Sheet Membrane Coating with a Reinforcing Element
In the article it has been considered the technique of determination of effective flange width of I-beam used in conjunction with sheet membrane coating, including on the basis of the computation of the reduction coeffic...