Abstract
The report considers the history of development of general theory of vibroacoustic simulation of distribution of broadband dynamic loads on bearing structures of buildings and structures. The following examples show the principles of construction of their direct and inverse vibroacoustic models in series and in parallel. It has been proven that the topology of the original schema is completely the same as that of its inverse model. This makes it possible to conclude that inverse vibroacoustic models of building structures are most convenient for design modeling of complex and multi-connected mechanical oscillatory systems. It is shown that vibration acoustic models for the first time allowed to create algorithms of automated design simulation of explosion resistance of bearing building structures in a wide band of numerous resonances of frequency reaction of the construction structure and its elements to explosive pulse loads.
Highlights
To date, one recognized method of numerical modeling has been the finite element method
The unique capabilities of this method have led to its mass use in almost all common software complexes of automated modeling
The general theory of the method formulates the principles of calculated simulation of linear problems of distribution of broadband impact and vibration-dynamic loads on structural elements
Summary
One recognized method of numerical modeling has been the finite element method. The main hope of space technologists was the potential for a super-thin laboratory to be created on board the spacecraft in weightless conditions This made it possible to expect the "ideal" semiconductor crystals needed by the electronic industry to grow under orbital conditions to create precision devices with high sensitivity and noise immunity. Despite the absence of gravity and ideal weightlessness, the first orbital experiments disappointed space technologists with the presence of a high level of vibrations (so-called on-board microgravity) on board the space station These vibrations were generated by a large number of onboard vibration instruments, including gyroscopes, fans, pumps, etc. Hlystunov in the 90s for the calculation of vibroactivity (microgravity) in the quiet technological compartments of space laboratories [2] This theory was based on five basic laws of linear dynamic interaction of building structures elements.
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