Analysis of the hardness of node connections of metal constructions using modern CAE-systems

Digital transformation is a key determinant in global economic growth and development. There are serious risks of digitalization of markets and society. In order to understand the key trends in consumer behavior under the conditions of digital economy, the analytics of various global consulting companies such as McKinsey Global Institute (MGI), the consulting company Gartner, Inc., companies Deloitte, Bain & C, Forrester Consulting were summarized in this study. Based on the analysis, the main shifts in consumer behavior in the post-industrial society during the transformation of the service economy into the consumer environment of the digital economy are determined. The article describes the changes in the pReferences and behavior of customers in the post-industrial economy under the influence of digital transformations. The result of the study led to the understanding of the fact that the buyer cannot predict his/her experience, since the participation of the buyer himself/herself in determining the value is increasingly required, which leads to the formation of the phenomenon of “co-creation of the value”.

Section: Methodsmentioning

confidence: 99%

Marketing concepts of customer experience in digital economy

Fokina

Баринов

2019

“…For solution this problems, developers create a lot of seminars, conferences, hold consultations, and create trial versions of their programs. CAE program complexes allow to solve different tasks of building mechanics [7][8][9]. Of course, they have borders of applicability, but developers permanently widen them, that's why, especially young users, think that they are infinite.…”

Section: First Sectionmentioning

confidence: 99%

Building constructions modelling problems in modern cae-systems

Alpatov

2019

This article is about choosing building structure analysis model question. Construction analysis model type choice affects result of counting. Result accuracy and reliability depends on analysis scheme choice. Using modern computers, there is a lot of alternative abilities of creation construction analysis model. This article is made to understand these analysis models features and their influence on result. An example of counting beam in six independent CAD systems is shown. Engineering simulation and design software, which base on finite elements method, were chosen for analysis. These counting models differ from each other only by geometrical scheme. Beam geometry modeling is performed using beam elements, shell elements and solid elements. The comparison of beam calculation results with its beam, shell and solid elements analysis scheme modelling was performed. The analysis of single factor (geometric scheme) influence on the results of beam calculation is shown. It was defined, that the choice of calculation complex does not affect the calculation result, if the geometrical counting models are completely identical. It was defined, that in case creating construction with various types finite elements there are differences in the calculation results. Difference in calculation results, using different geometrical models, is seen in using the same complex and in comparison of different complexes. It was defined, that difference in calculating internal forces and moments in beam for different geometrical models can be more than 10%.

Cold accumulators in air conditioning systems

Shlychkov

2019

The appropriateness of using cold accumulators in air conditioning systems has been assessed. A cooling system with a storage tank is considered, in which ice is frozen on the outer surface of the evaporator heat exchange tubes. It is established that the accumulation of cold can lead to a significant reduction in cash costs. The analysis of the experience of using cold accumulators in air conditioning systems allows drawing the following conclusions: the most common solution for accumulating cold is the use of ice accumulators with ice freezing on the heat exchange surface of evaporators located in the storage tank; the melting mode of ice in ice accumulators with the chiller turned off is adopted in designing. The area of the heat exchange surface of the ice accumulator apparatus during cooling of ice water should be determined mainly depending on the conditions of ice melting; to freeze ice, it is necessary to increase the heat exchange surface area of the evaporator and lower the boiling point to minus 10...15 °C. Specific energy costs (kW of electricity per kW of cold) increase by 2 or more times, which reduces profit.