COMPARATIVE ANALYSIS OF EFFICIENCY OF SOME ALGORITHMS OF CALCULATION OF SYSTEMS WITH UNILITERAL CONSTRAINTS
The article considers a system with one-sided restrictions, known from many publications. This system is an absolutely solid body (square) under the action of a concentrated force, unfastened at the corners by springs of the same stiffness, working only in tension. The vast majority of works related to the study of systems (both structurally and physically nonlinear) with one-sided elastic or inelastic connections use iterative methods included in the general algorithm. This is due to the fact that in these systems the area of the «detachment» zone or the number of contact points with one-way bonds depends on the magnitude of the loads, the sequence of their application, etc. The algorithm for calculating such a system, developed by the authors, is based on the classical mixed method, step-by-step loading and the iterative process of refining the solution at each step. The performed test calculation showed that such an algorithm avoids the looping of the iterative process and reduces the number of iterations by 1-2 orders of magnitude in comparison with other known algorithms.