MODELING OF NONLINEAR OSCILLATIONS OF FLAT TRUSSES DURING NONSTATIONARY PROCESSES BASED ON THE TIME ANALYSIS METHOD

Abstract

The article covers the experience of calculation of statically indeterminate flat trusses and truss structures under the action of single half-sine pulse forces in the process of nonlinear oscillations performed at the Department of Structural Mechanics of South Ural State University. The work of a single-span bridge truss, a two-span crane truss and a 3-rods truss structure is considered in the described examples. The structural oscillations are associated with physically and structurally nonlinear behavior of individual load-bearing elements. The behavior of parameters of the dynamic response of trusses in the process of oscillation is shown. The method of time analysis based on the study of characteristic matrix quadratic equations is used as the calculation method.