TY - GEN
T1 - Efficient updating of static modes in the Craig-Bampton reduction basis
AU - Voormeeren, S. N.
AU - Rixen, D. J.
PY - 2012
Y1 - 2012
N2 - Although component mode synthesis (CMS) methods for structural dynamic analysis were introduced in the 1960s, it is still an active field of research. One of the current challenges is to apply CMS in a design process in which some component(s) of the system are (parametrically) modified. For every design change, the component reduction basis needs to be recomputed, thereby seriously hindering the effectiveness of the CMS approach.In this work we address the static modes, which are an essential part of every component reduction basis. For the popular Craig-Bampton CMS method, we present an efficient yet accurate method for updating the static modes based on the iterative conjugate gradient solver. This way, no factorization of the modified stiffness matrix is needed and optimal use is made of the available information. The effectiveness of the proposed strategy will be illustrated by a case study.
AB - Although component mode synthesis (CMS) methods for structural dynamic analysis were introduced in the 1960s, it is still an active field of research. One of the current challenges is to apply CMS in a design process in which some component(s) of the system are (parametrically) modified. For every design change, the component reduction basis needs to be recomputed, thereby seriously hindering the effectiveness of the CMS approach.In this work we address the static modes, which are an essential part of every component reduction basis. For the popular Craig-Bampton CMS method, we present an efficient yet accurate method for updating the static modes based on the iterative conjugate gradient solver. This way, no factorization of the modified stiffness matrix is needed and optimal use is made of the available information. The effectiveness of the proposed strategy will be illustrated by a case study.
UR - http://www.scopus.com/inward/record.url?scp=84861730871&partnerID=8YFLogxK
U2 - 10.1007/978-1-4614-2422-2_27
DO - 10.1007/978-1-4614-2422-2_27
M3 - Conference contribution
AN - SCOPUS:84861730871
SN - 9781461424215
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 299
EP - 317
BT - Topics in Experimental Dynamics Substructuring and Wind Turbine Dynamics - Proceedings of the 30th IMAC, A Conference on Structural Dynamics, 2012
T2 - 30th IMAC, A Conference on Structural Dynamics, 2012
Y2 - 30 January 2012 through 2 February 2012
ER -