TECHNICAL MECHANICS
ISSN (Print): 1561-9184, ISSN (Online): 2616-6380

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UDC 539.3

Technical mechanics, 2018, 4, 82 - 89

STRESS AND STRAIN FIELD OF PLATES WITH REINFORCED RECTANGULAR OPENINGS VARIOUSLY ORIENTATED RELATIVE TO THE DIRECTION OF THE TENSILE FORCE

DOI: https://doi.org/10.15407/itm2018.04.082

Hudramovych V. S., Hart E. L., Panchenko S. V.

Hudramovych V. S.
Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine
Ukraine

Hart E. L.
Oles Honchar Dnipro National University
Ukraine

Panchenko S. V.
Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine
Ukraine

      Computer models were developed for analyzing elastic rectangular plates with reinforced rectangular elongated openings acted upon by uniaxial tensile forces in the case of different orientations of the openings relative to the direction of the forces. The plate material and the reinforcing strip material are distinct from each other. Computer simulation was conducted using the finite-element method as part of a standard application package. The stress and strain field of a plate was studied as a function of the mechanical and geometric parameters of the plate and the reinforcements and the orientation of the openings (the angle the opening makes with the force direction). The stress concentration factor was studied as a function of the opening orientation and the ratio of the modulus of elasticity of the plate material to that of the reinforcement material (1/3 and 3). The simulation involved plates with openings making angles of 60î, 45î, and 30î with the load direction. The deformations of the plate and reinforcement materials laid in the elastic domain. It was shown that an appropriate choice of the geometric and stiffness parameters of a plate and reinforcements and of the opening orientation may significantly reduce the stress concentration in the plate. Patterns of the stress intensity distributions at plate sections passing along one of the opening sides and patterns of the stress concentration in the vicinity of the opening corner points are presented. The results obtained may be used in the solution of problems of optimization of thin-walled rectangular plates with elongated openings reinforced with strips at their ends at a low consumption of the reinforcing strip material.

reinforcement, plate, opening, stress, deformation, stress concentration factor, finite-element method

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DOI: https://doi.org/10.15407/itm2018.04.082

Copyright (©) 2018 Hudramovych V. S., Hart E. L., Panchenko S. V.

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