Geometric Parameters for Finite Element Model Updating of Joints and Constraints

JE Mottershead (Liverpool University), MI Friswell, GHT Ng (University of Wales Swansea) & JA Brandon (University of Wales Cardiff)

Mechanical Systems and Signal Processing, Vol. 10, No. 2, March 1996, pp. 171-182

Abstract

The sensitivity method is applied to update finite element models of welded joints and the boundary condition of a cantilever plate. Careful parameterisation is found to be critical in updating the joints and boundary conditions. Updating geometric parameters has considerable potential in updating. The use of nodal offset dimensions results in an updated model of the welded joint with physical interpretation. Similarly the 'rigid' boundary in a cantilever plate is successfully updated using the effective length of the elements closest to the joint. In all cases an improvement on the analytical natural frequencies is demonstrated.

Paper Availability

This material has been published in the Mechanical Systems and Signal Processing, Vol. 10, No. 2, March 1996, pp. 171-182, the only definitive repository of the content that has been certified and accepted after peer review. Copyright and all rights therein are retained by Academic Press. This material may not be copied or reposted without explicit permission.

Please note that Elsevier Science has bought Academic Press. Although the original paper was published on IDEAL, in future access to this journal will be via ScienceDirect.


Download PDF file (384K)

Link to paper using doi:10.1006/mssp.1996.0012

Mechanical Systems and Signal Processing on ScienceDirect

ScienceDirect