Open AccessDetermination of stresses in truss rods: numerical and physical experiment
Author(s) -
T. S. Kiychenko,
M. V. Tabanyukhova,
Н. В. Харинова
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/687/3/033043
Subject(s) - truss , rod , finite element method , photoelasticity , structural engineering , stress (linguistics) , materials science , mechanics , engineering , physics , composite material , solid mechanics , medicine , alternative medicine , pathology , linguistics , philosophy
The paper presents the results of an experimental numerical study of the stress state of the rods of a flat truss. The values of internal forces and stresses in the truss model were obtained using the SCAD software package, as well as experimentally using the polarization-optical method. The finite element method (FEM) is used to calculate two plane truss models. In the first case, the truss was modeled by rod elements, in the second – by plates. The fields of normal, tangential and principal stresses are obtained. Based on them the longitudinal internal forces in the rods of the farm are determined. The captins of interference bands in the model of a flat truss are obtained by the method of photoelasticity. Stresses are calculated with their help. The quantitative and qualitative analysis of the stress state, described in the numerical and physical experiment, is carried out.