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Generalized-α methods for seismic structural testing
DOI:10.1002/eqe.390.png)
摘要
En 中文
his paper presents novel predictor-corrector time-integration algorithms based on the Generalized-alpha method to perform pseudo-dynamic tests with substructuring. The implicit Generalized-g algorithm was implemented in a predictor-one corrector form giving rise to the implicit IPC-p(infinity) method, able to avoid expensive iterative corrections in view of high-speed applications. Moreover, the scheme embodies a secant stiffness formula that can closely approximate the actual stiffness of a structure. Also an explicit algorithm endowed with user-controlled dissipation properties, the EPC-P-b method, was implemented. The resulting schemes were tested experimentally both on a two- and on a six-degrees-of-freedom system, using substructuring. The tests indicated that the numerical strategies enhance the fidelity of the pseudo-dynamic test results even in an environment characterized by considerable experimental errors. Moreover, the schemes were tested numerically on severe non-linear substructured multiple-degrees-of-freedom systems reproduced with the Bouc-Wen model, showing the reliability of the seismic tests under these conditions. Copyright (C) 2004 John Wiley Sons, Ltd.
Keyword:
pseudo-dynamic test
substructured environment
generalized-alpha methods
predictor-corrector technique
error propagation analysis
secant stiffness technique
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期刊
E
IF:
5
论文数:
3.7K
被引数:
1.8W
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