Stress redistribution in flat damaged trusses

Abstract

An important problem of modern engineering is to ensure the stability of buildings to a progressive collapse. One of the options for making calculations is to perform a static calculation with the use of the dynamic coefficient. The dynamic factors of damage of the structure depend on the failure time of the element, i.e. time during which the resistance of the damaged element is reduced to zero.To determine the time of exclusion, a series of experimental studies of stretched and compressed steel samples was carried out. The work of elements was studied after they had exhausted their carrying capacity (strength or stability). The results of a numerical study of a truss with damaged elements are presented. It is established that a significant part of the load is redistributed to the intact elements of the truss during deformations of the excluded element are smaller than the experimentally established deformations of the rods.

Software Module Development for the Parametric Generation of Truss Structure Geometry in a Two-Dimensional Setting

“…These designs require certain approaches to the calculation and assessment of their reliability. In works [1][2][3][4][5][6], approaches to some calculation and experimental methods for assessing their reliability are highlighted. Some approaches and calculation schemes for assessing the reliability of defective structures as well as solving the problem of restoring the properties of their individual elements are covered in monographs [7][8].…”