EACS 2016 paper - A Pseudodynamic Testing Algorithm for Obtaining Seismic Responses of Structures
Shuenn-Yih Chang
Chiu-Li Huang
10.15131/shef.data.4206549.v1
https://orda.shef.ac.uk/articles/journal_contribution/EACS_2016_paper_-_A_Pseudodynamic_Testing_Algorithm_for_Obtaining_Seismic_Responses_of_Structures/4206549
<p>EACS 2016 Paper No. 135<br></p><p>A novel family method is proposed for the pseudodynamic
tests. It can integrate favourable numerical properties together, such as the
unconditional stability, explicit formulation, second-order accuracy and favourable
numerical dissipation. Since this family method can have an explicit
formulation of each time step its pseudodynamic implementation involves no
iteration procedure. Consequently, the pseudodynamic tests can be easily
conducted when compared to an implicit pseudodynamic method, where an iteration
procedure must be involved for each time step. On the other hand, the
properties of unconditional stability, second order accuracy and numerical
dissipation indicate that the proposed pseudodynamic algorithm is very
promising for solving inertial problems, where the total response is dominated
by low frequency modes only and the high frequency responses are of no
interest. The unconditional stability implies that there is no limitation on
step size for the high frequency modes. Besides, the dominated low frequency
modes can be reliably integrated by choosing an appropriate time step since the
proposed family method can have a second order accuracy. Finally, the spurious
participation of high frequency responses can be suppressed or filtered out by
the desired numerical dissipation. The proposed pseudodynamic algorithm is very
promising for a general pseudodynamic test or a substructure pseudodynamic
test.</p>
2017-03-28 15:15:41
EACS2016
pseudodynamic test
numerical dissipation
structure-dependent method
unconditional stability
Mechanical Engineering