SULITKA, M., et al. Application of Krylov reduction technique for a machine tool multibody modelling. Advances in Mechanical Engineering. 2014, 2014 1-9. ISSN 1687-8132. DOI 10.1155/2014/592628.
Quick calculation of machine tool dynamic response represents one of major requirements for machine tool virtual modelling and virtual machining, aiming at simulating the machining process performance, quality and precision of a workpiece. Enhanced time effectiveness in machine tool dynamic simulations may be achieved by employing model order reduction (MOR) techniques of the full finite element (FE) models. The paper provides a case study aimed at comparison of Krylov subspace base and mode truncation technique. Application of both of the reduction techniques for creating a machine tool multibody model is evaluated. The Krylov subspace reduction technique shows high quality both in terms of dynamic properties of the reduced multibody model and a very low time demands at the same time.
