Modelování substruktur s kontakty

Abstract

Dissertation work is dedicated to numerical technique developing for analysis of non-linear transient problems with contacts based on reduced finite element models via substructure method. Technique was developed based on contact problem analysis of turbine blades damping by underplatform friction dampers. Developed technique based on substructure reduction method with contacts has satisfying predictability and enough for analysis of basic regularities of system dynamic properties and contact interactions. Presented technique can be used as an engineering methodology for underplatform dampers effectiveness study. Moreover it can be applied for other non-linear transient problems including contacts. Major benefit of the technique is reduced calculation time 60-80% in comparison with full finite element models.