A numerical analysis of non–linear contact tasks for the system of plates with a bolted connection and a clearance in the fixture
DOI:
https://doi.org/10.15587/1729-4061.2016.60087Keywords:
stress-strained state (SSS), silo, finite element technique, system of plates, reaction in the supportsAbstract
The article presents an analysis of geometrically nonlinear contact tasks for the system of plates. The peculiarities of the presented tasks consist in research of a pressure-deformed state of two plates connected with a bolt fixture with a clearance and loaded with a uniformly distributed transverse force along the upper edge. Both geometrical and structural non-linearities are presented in the study tasks. The geometrically nonlinear formulation determines the SSS for plates connected with a bolt fixture with a clearance. Maximum deformation of such plates is 0.028 m and the equivalent (von-Mises) stress is 1200 MPa. The bolt skewing and the plate deformation increase tensile forces in the bolt, thereby increasing the force of the bolt fixture tightening (1500 N to 4000 N). The proposed methodology can be used for solving similar tasks as it considers a wide range of operating loads. In case when the researched object is a solid plate, geometrically linear and non-linear formulations do not guarantee reliable results.
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Copyright (c) 2016 Oleksandr Atroshenko, Oleksiy Bondarenko, Oleksandr Ustinenko, Mykola Tkachuk, Natalia Diomina
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