Vibrations of machine-building constructions with heterogeneous dispersion of energy

Dynamically loaded machine-building constructions with a variable structure, characterizing by the heterogeneous internal and construction damping are considered in the paper aiming at the creation of dynamic analysis methods for machine-building constructions with a heterogeneous structure, which take into consideration the distribution non-umformity of the internal and construction damping. Their algorithmization and program realization for the application to the calculation of real systems and further optimization of dissipative properties are also the aim of the paper. As a result a problem of the heterogeneous damping account in arbitrary space systems under stationary and non-stationary dynamic actions has been solved. The influence of the mechanical energy dissipation level on frequences and forms of space construction natural vibrations has been investigated. A problem of the damping property optimum distribution in a system with a heterogeneous structure has been solved. Algorithms and a program complex, realized on ES and IBM PC/AT computers, which make it possible to solve problems of the dynamic analysis and synthesis of homogeneous and heterogeneous structures under arbitrary disturbance; to simulate objects of a variable structure, the calculation of which is impossible by traditional methods, have been created. Methodologies, algorithms and programs of the dynamic analysis and synthesis have been introduced into operation in "Energia" research and production amalgamation, in some Research Institutes. The methodologies and programs introduced make it possible to calculate dynamic systems with a variable structure, the dynamic analysis and synthesis of which is impossible by traditional methods. Result may find their field of application in aerospace, ship- and machine-building industry, chemical and argicultural machine-building, construction industry, electromachine-buildingAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio