Reduction of surface waves in finite element analysis of oscillations of elastic liquid-containing bodies

Autor:	V. G. Grigor’ev, E. V. Grigor’eva
Rok vydání:	2014
Předmět:	Physics Classical mechanics Mathematical model Surface wave Mechanical Engineering Free surface Mixed finite element method Mechanics Elasticity (economics) Safety Risk Reliability and Quality Shortwave Industrial and Manufacturing Engineering Finite element method
Zdroj:	Journal of Machinery Manufacture and Reliability. 43:460-464
ISSN:	1934-9394 1052-6188
Popis:	An efficient method of exclusion of the degrees of freedom connected with high-frequency oscillations of the free liquid surface from the equations of the finite element model of a deformed liquid-containing structure is presented. The number of natural frequencies specified by the shortwave oscillations of the free surface which do not significantly affect the dynamics of loading of the bearing structure grows sharply, with a refinement of the finite element partitioning of the hydroelastic system. The higher frequencies of this subspectrum alternating with natural frequencies specified by elasticity of the structure during interaction with its liquid complicate the analysis of its dynamic characteristics and the construction of mathematical models of behavior under the action of external dynamic factors.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::40574b7cade58552ee2db00b769da9c8 https://doi.org/10.3103/s1052618814050070 Zobrazit plný text záznamu Full text from SpringerLink