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STIFFNESS LINEARIZATION AND ERROR ESTIMATION OF A NUMERICAL MODEL OF A CABLE SHOCK DAMPER WITH SPATIAL LOAD PERCEPTION

DOI: 10.46573/2658-5030-2024-3-21-32

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Authors

S.V. DORONIN, E.M. REIZMUNT

Abstract

The difficulties arising at analytical calculation of shock absorbers with nonlinear characteristics and spatial perception of loads are noted. The difficulties of numerical simulation of the cable for the analysis of mechanical behavior of shock absorbers related to the structural complexity and dimensionality of the problem are considered. A technically sound approach to the construction of a linearized numerical model of a tether shock absorber based on experimental stiffness estimates is developed. This approach allows to reduce the dimensionality and requirements to computational resources due to simplification of the tether structure. It is emphasized that the adequacy and the possibility of using the obtained numerical model of the cable shock absorber for preliminary simplified calculations of shock absorber systems with subsequent experimental testing and refinement of the results are based on the analysis of the numerical model error.

Keywords

cable shock damper, static calculation, finite element model, nameplate load diagrams, experimental stiffness estimates, cable, linearization.