title: Ð§Ð¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿Ð»Ð°ÑÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ°Ð·ÑÑÑÐµÐ½Ð¸Ñ Ð¶ÐµÐ»ÐµÐ·Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Numerical modeling of plastic destruction of reinforced concrete structures
Creators: name: ÐÐµÑÐµÐ»Ð°Ð´Ð¾Ð²Ð°, ÐÐºÐ°ÑÐµÑÐ¸Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð§Ð¸ÑÐ»ÐµÐ½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ
ÐÐµÐ»ÐµÐ·Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÐµ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸
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description: According to modern representations, the main methods for execution of computational modeling are methods of the final and element analysis (MKE) which are based on forming of an array of finite regions (elements), for each of which differential equations with private derivatives on borders (in nodes) these areas are solved. This method is widely used for a solution of problems of mechanics of a deformable solid body and, in particular, modeling of destruction of a concrete stone. However, basic (linear) representations of MKE are not enough for the description of a plastic zone of destruction of concrete and also for the description of a relaxation of material after formation of a trunk crack. Therefore today one of the most important directions is forming of such numerical model of application of MKE which is capable to describe destruction of a concrete stone with the maximum convergence with laboratory results.
One of the most widely applied models for the description of flowability (plastic destruction) of material is the cup model Dryukera-Pragera who is successfully applied to modeling of destruction of metal constructions. In a case with concrete, this model allows to create section of plastic destruction of a stone (forming of microcracks), but poorly reacts to effect of a relaxation of material after forming of a trunk crack. Moreover, in this case determination of parameters of destruction of a concrete stone is complicated. Therefore on the basis of the Dryukera-Pragera model the micro flexible model of destruction where as the surface of destruction edges of the sphere and their intense deformed status both on a surface, and outside a surface are considered actively develops. Such approach is characterized by good convergence of results with experiments and also low dependence of results on the created grid of terminal elements, but was applied only to a concrete stone without application of any reinforcing.