Tarasov

pp. 13-28

pp. 192-199

This work is a continuation of studies on an important issue of galvanic production that is providing water and recovery of valuable chemical compounds based on a design concept of a proposed operation module with a countercurrent movement of a fluid in a distributed flushing system. The article provides results of numerical calculations of the primary process and repeated jet-dynamic flushing of blind holes filled with liquid pollution by short liquid jets. In order to ensure an effective removal of contaminants, the method was justified for cross-feed of details relating to multi-nozzle heads.

The authors propose a method of creating analytical relationships to estimate springing of parts after calibration with fluid or with flexible media. The authors obtained formulas for estimation of nominal and random components of springing for facing spherical shape based on results of numerical simulations. The authors show principles of the process and give recommendations on the choice of conditions for calibration.

The authors describe students’ acquisition of deep knowledge about structure, distinct features and trends of development of composite materials based on glass, aramid and carbonic fibers. Problems of modern design engineering and manufacturing of composite rocket-and-space machines are also considered.

The article presents a method of generation of assembly variants for a multipart device. The model of the multipart device is based on oriented hypergraphs of constraints. The oriented hypergraph describes the impossibility of assembly when constructional, technological, economical causes are present. Visual interpretation of the hypergraph is proposed; examples of constructive and technological constraints for the shaped charge are described.

This article deals with the discrete multistep method of assembly technology selection with finite number of selection options on each step. It’s suggested to generate the set of allowed selection options automatically with the usage of oriented hypergraphs. The hypergraph is defined with the set of vertices – parts to be assembled, and the set of edges – assembly operations. The proposed method is based on the system of constraints on allowed assembly variants in the form of oriented hypergraph, introduced by a developer, followed by generating of the full solutions set, with these constraints taken in the account.