Modal properties of theatre lifting platform - experiment versus FEM

The presented paper deals with the dynamic properties analysis of the steel structure. The construction consists of the stationary and movable parts, the significant dynamic loading caused by the change of motion state during run up and run down is expected. The three ways of the dynamic analysis realizations - by finite element method for two types of 3-D finite elements and by experimental verification of modal properties using experimental modal analysis are presented.

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Pfedlozena prace se zabyva analyzou dynamickych vlastnosti konstrukce, ktera sestava ze stacionarni a pohyblive ćasti a u niz je v provozu oćekavan yyznamny podil dynamickeho zatezovani vyvolaneho zmenou pohybcweho stavu pfi rozjezdu a zastavovani. Je prezentewano troji provedeni analyzy dynamickych vlastnosti, ktera była feśena jednak metodou konećnych prvku pro dva typy 3D modelu, a to pro nosnikovo-skofepinovy a pro objemovy model, a jednak experimentalnim ovefenim modalnich vlastnosti vybrane skupiny vlastnich tvaru.