Virtual simulation method of interrelated physical processes in on-board electronic means
Virtual simulation method is developed in the work. It based on virtual 3D-models of the structures of on-board electronic means designs with superimposed heterogeneous fields of electrical, thermal, mechanical and other processes caused by united impacts of external factors. A distinctive feature of this method is the account of the close relationship of the flowing physical processes between themselves during the simulation.
This paper describes the experience of the application of the design approach which is used in the HSE - Nizhny Novgorod in the teaching of accounting (financial) accounting, auditing, economic analysis. The stages of a complex project, as benefits of this approach and the problems that arise.
The monograph presents results by professor Dr. A. Shalumov’s Research School of Modeling, Information Technology and Automated Systems (Russia). The program, ASONIKA, developed by the school is reviewed here regarding reliability and quality of devices for simulation of electronics and chips during harmonic and random vibration, single and multiple impacts, linear acceleration and acoustic noise, and steady-state and transient thermal effects. Calculations are done for thermal stress during changes in temperature and power in time. Calculations are done for number of cycles to fatigue failure under mechanical loads as well as under cyclic thermal effects. Simulation results for reliability analysis are taken into account. Models, software interface, and simulation examples are presented.
For engineers and scientists involved in design automation of electronics.
The methodology and software tools for multi-level thermal and electro-thermal design of electronic components is presented. The discussion covers 2D/3D constructions of: 1) discrete and integrated semiconductor devices; 2) monolithic and hybrid ICs; 3) MCMs and PCBs. The actual test validation through thermal measurement is demonstrated for all types of components.
Creature questions of the mathematical, informational and programming support for the practice network community control are considered. Community mathematical model is proposed. This model utilization as basis for realization of the control system principal functions in the context of the participant interaction improvement and object community regions forming is considered.
In this paper the comparative characteristics of the РС ASONIKA-K and PМ of reliability calculations are given.
Brazil and Germany have a "shared history" or shared stories that refer not only to the similarities and differences between the two countries, but also to cultural approaches between them despite the socio-cultural differences and geographical distance. Accordingly, the contributions in this volume highlight the German Brazilian relations in design, film, literature, and media. At the same time they discuss motivations, connections, comparisons and inspirations of these relations.
The results concern roll pass design for rolling a round bar of a 20mm diameter from a 55mm diameter input. Concerning materials, this roll pass design must cover a wide range of steels, from low-carbon micro-alloyed steels to stainless steels. The roll pass design proposal takes into consideration lower plasticity of certain steels. The comparison was enabled by suggesting two roll pass designs. The classical oval-round roll pass design, where the maximum extension coefficient is set to 1.55 in oval and 1.22 in round grooves. The second roll pass design uses a combination of smooth part of the roll (curves) and round roll passes. Distribution of the extension coefficient in individual passes is similar to that of oval-round series. The paper also compares values of energy-force parameters calculated analytically using the method of finite elements. If we compare the distribution of temperature, stress and size of the grain, it is proved that the oval-round roll pass designs are the best as far as the balanced distribution of the above-mentioned values is concerned. The roll pas design combining smooth part of the roll with a round part does not achieve such balance. However, its advantage lies in far lower requirement for the needed length of the working part of the roll. Five passes are carried out on the smooth part of the roll, which considerably cuts down the required length of the roll body. Therefore it is this variant that will be used in the laboratory of wire rolling created within the project RMSTC.