A BEM-formulation Applied To The Solution Of Nonlinear Dynamic Problems
Price
Free (open access)
Transaction
Volume
21
Pages
10
Published
1998
Size
859 kb
Paper DOI
10.2495/BE980291
Copyright
WIT Press
Author(s)
H.J. Holl, A.K. Belyaev & H. Irschik
Abstract
A semi-analytical time-integration procedure is presented for the integration of discretized dynamic mechanical systems. This method utilizes the advantages of the boundary element method, well known from quasi-static field problems Motivated by these spatial formulations, the present dynamic method is based on influence functions in time, and gives exact solutions in the linear time-invariant case. Similar to domain-type BEM's for nonlinear field problems, the method is extended for different nonlinear dynamic systems having nonclassical damping The numerical stability and accuracy of the semi-analytical method is discussed in two steps for the nonclassical damping and for the nonlinear restoring forces The Duffing oscillator and a system with nonclass
Keywords