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Information × Registration Number 0219U100505, 0118U001182 , R & D reports Title The development of the creep strains determination method of structural polymeric materials under the complex loading regimes. popup.stage_title Head Holub Vlаdyslаv P., Доктор технічних наук Registration Date 15-02-2019 Organization S.P.Timoshenko Institute of Mechanics popup.description2 The system of solving equations of the nonlinear one-dimensional theory of visco-elasticity under conditions of non-stationary loading is formulated, the loading program of which is realized in the form of a sequence of elementary loads, which is given through of Heaviside's singular functions. The characteristics of the nonlinearity of viscoelastic properties and parameters of fractional-exponential heredity kernels of a number of structural polymeric materials being used in modern energy, transport, and space industries are determined. Problems of creep strains calculating of polyvinyl chloride plastics in the conditions of one-stage and multi-stage post-loading, full unloading, alternation of post-loading and unloading are solved and experimentally tested Product Description popup.authors popup.nrat_date 2020-04-02 Close