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Information × Registration Number 0216U000798, 0115U004023 , R & D reports Title Preparation of scientific-technical book "Methods of evaluation of strength and durability of polymer pipe constructions" popup.stage_title Head Stashchuk Mykola, Доктор фізико-математичних наук Registration Date 03-03-2016 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 The method of determining the stress-strain and threshold states developed cylindrical cellular structures designs for the evaluation of their strength. Thin-walled hollow element modeled ortotropnoy shell. Based on this was proposed evaluation method of stress-strain state tubular cell design and modified the corresponding system of equations to shell type of relevant forces and moments. Proven methods of evaluation of stress-strain state cylindrical cellular structures designs, which made the appropriate experiments and the comparison of theoretical and experimental results. Reviewed influence of soil on cell of stress-strain state pipes for the two schemes fixing (rigid and only a soft base). The recommendations for long-term and reliable operation of the main cellular pipe constructions (long cellular pipe placed in the soil; non-pressure tank, layer vertically into the soil; the cellular pipe at the given internal pressure) are developed. Reviewed strength of the cellular elements of technological crack defect arising between the polyethylene tubes in the manufacture of cell walls. Found critical length of defects. Prepared the final version of the manuscript manual "Methods of evaluation of strength and durability of polymer pipe constructions". Made an editing and layout for the book. Product Description popup.authors Іваницький Ярослав Лаврентійович Дорош Мар'ян Іванович popup.nrat_date 2020-04-02 Close