Dynamic Response of Complex Structural Intersections Using Hybrid Methods

[+] Author and Article Information
P. J. Halliday, K. Grosh

Department of Mechanical Engineering and Applied Mechanics, University of Michigan, 3124 G. G. Brown Building, Ann Arbor, MI 48109-2125

J. Appl. Mech 66(3), 653-659 (Sep 01, 1999) (7 pages) doi:10.1115/1.2791518 History: Received January 27, 1999; Revised March 30, 1999; Online October 25, 2007


A novel application of Lagrange multipliers to couple domains modeled independently with linear elastodynamic and reduced-order theories is presented herein. This method is developed from a variational formulation of the continuous problem and is easily implemented within a finite element code. Applications include, but are not limited to, modeling of inhomogeneities such as joints, cracks, holes, and welds within a frame-like structure. Results from this method compare well with a full elastodynamic discretization and existing methods for modeling such problems.

Copyright © 1999 by The American Society of Mechanical Engineers
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