Increasing the strength of threaded joints

Курушин, М. И.; Kurushin, Aleksei; Kurushin, S. A.

doi:10.3103/s1068798x13030106

Cited by 2 publications

(2 citation statements)

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“…Таким образом, на третьем этапе произошло существенное обновление и укрупнение производства, увеличилась интенсивность и производительность труда На первых двух этапах денежные потоки имеют отрицательные значения, т. к. эти фазы носят мотивационный характер, и наличие прибыли не считается неотъемлемым условием [10].…”

Section: -й этап (1918-1945)unclassified

Features of the Application of the Concept of the Life Cycle of Goods to Construction Facilities

Ivanova,

Samigullina

2022

Soc.-ekon. upr.: teor. prakt.

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The article discusses the feasibility and features of the application of the concept of the life cycle of a product in the construction industry. First of all, the features of the product life cycle are given, highlighting four stages: introduction, growth, stabilization, decline. Based on the analysis of special literature, the author's definition of the life cycle of a capital construction object was formulated. The specific features of the application of the concept in relation to buildings and structures are highlighted. In addition, the author's approach to identifying stages and stages in the life cycle of objects is proposed. The use of a wave life cycle model or a “repeated cycle” curve for capital construction projects is substantiated. Particular attention is paid to the consideration of this topic from a practical point of view on the example of the brewery “Ponart” located in Kaliningrad. This object has the status of a cultural heritage site of local (municipal) significance. A chronological table of events that affected the object, starting from 1849 until the publication of the article, is given, highlighting the pre-investment stage, the stage of implementation, operation and liquidation of the object. On the basis of the data obtained, the authors have constructed a curve of the life cycle of an object, with the identification of phases of the life cycle. In the final phase, a marketing strategy was developed for the current operational phase.

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Section: -й этап (1918-1945)unclassified

Features of the Application of the Concept of the Life Cycle of Goods to Construction Facilities

Ivanova,

Samigullina

2022

Soc.-ekon. upr.: teor. prakt.

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“…An increase in cyclic robustness can be reached by different constructional-technological ways, for example, by changing the design and materials of threaded parts, application of coatings and lubricants on thread surfaces and so on [7,8]. At the same time, the analysis shows that application of the most of proposed methods leads to considerable complication of design as well as manufacturing technology.…”

Section: Introductionmentioning

confidence: 99%

Providing Cyclic Robustness of Bolted Joints in Case of Assembly with Implementation of Anaerobic Materials

Voyachek

Sága

Ságová

et al. 2019

MSF

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Stress concentration in thread roots and nonuniform load distribution along thread turn are the major disadvantages of bolted joints. Under changing cyclic loads on areas of high stress concentration crack formation and destruction of parts occur. In addition, the fretting corrosion processes activate in the areas of contact between thread turns. The purpose of the work is to increase rupture strength of bolted joints under the action of cyclic forces by decreasing stress concentration and reducing movements in contact zone of mating parts in case of assembly with implementation of anaerobic materials. Modelling of bearing strength of bolted joints is conducted according to finite element method, with theory of contact interaction between mating surfaces being used. The results of experimental research are given. Anaerobic materials which polymerize in area of thread contact of parts are used. It was established that assembly with implementation of anaerobic material allows unloading of thread turns because the part of external load is received by elastic layers of the polymerized anaerobic material. In this case the level and the concentration of stress in thread roots reduce, relative movements are decreased, the joint becomes more rigid and its cyclic robustness grows.

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Increasing the strength of threaded joints

Cited by 2 publications

References 0 publications

Features of the Application of the Concept of the Life Cycle of Goods to Construction Facilities

Features of the Application of the Concept of the Life Cycle of Goods to Construction Facilities

Providing Cyclic Robustness of Bolted Joints in Case of Assembly with Implementation of Anaerobic Materials

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