Optimization of production under conditions of production of a wide range of products

Introduction. The development of industrial housing construction is characterized by the growth of houses with individual architectural and structural-planning solutions. This is a consequence the growth of the product range, increase in the share of individual products with low circulation parameters and a wide range of fluctuations in labour intensity. Lack of proper attention to a large variation of product parameters is a consequence of non-rhythmic production, downtime and inefficient use labour resources. In such conditions it is important to ensure completeness of products production and compliance with delivery schedules products to the construction site. The solution of these tasks is realized by managing stocks of finished products or creating rhythmic and continuous production.

Materials and methods. In accordance with the research objectives, the methods of analysis and synthesis, mathematical statistics, simulation modelling and expert evaluations were applied. To assess the complexity of products, a system of criteria was established, taking into account the design solutions and geometric parameters of products. Based on the established criteria, the products are classified into categories, for which the complexity indicators and labour intensity indicators are determined. This classification products formed the basis of the production optimization algorithm.

Results. The analysis of the nomenclature of products of the production programmes of the enterprises has fixed the fluctuations of labour intensity indicators of production in the range of 2.0–17.0 man-hours. The attempt to establish the dependence of labour intensity indicators on the product volume showed the absence of functional dependence. On the basis of the analysis of labour intensity distribution the hypothesis about the influence on the labour intensity indicators, first of all, the design features of products were substantiated.

Conclusions. On the basis of the obtained data, a system of planning the layout of products in moulds and assigning the rhythm of production taking into account the design solutions of products according to the indicators of complexity, which can be established by the method of expert evaluations, is proposed. For practical implementation of the proposed evaluation system, an algorithm of optimal technological parameters assignment is developed, which provides simultaneously equilibrium labour intensity and optimal product layout in moulds, and thus rhythmicity of production.

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