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Choices of Structure-Dependent Pseudodynamic Algorithms
Structure-dependent integration algorithms have been implemented for pseudodynamic testing because they are very promising for this type of test due to the combination of unconditional stability and explicit formulation simultaneously. Although their numerical properties have been assessed and their feasibility for pseudodynamic tests has been corroborated, the choice of an appropriate structure-dependent pseudodynamic algorithm might be a difficult task. This is because some undiscovered, adverse properties were found for specific structure-dependent algorithms, although their basic properties have been well explored. Because the adverse properties are not well disclosed for these structure-dependent pseudodynamic algorithms, they might lead to inaccurate test results. This paper summarized both the favorable and adverse numerical properties of the pseudodynamic algorithms so that appropriate pseudodynamic algorithms can be identified. This paper assessed and compared most structure-dependent pseudodynamic algorithms, and recommended some structure-dependent pseudodynamic algorithms for engineering practice. Both recommended nondissipative and dissipative structure-dependent algorithms are very suitable for pseudodynamic tests because they possess favorable properties but exhibit no adverse properties. It was also substantiated that numerical damping cannot be used to overcome an overshoot caused by weak instability.
Choices of Structure-Dependent Pseudodynamic Algorithms
Structure-dependent integration algorithms have been implemented for pseudodynamic testing because they are very promising for this type of test due to the combination of unconditional stability and explicit formulation simultaneously. Although their numerical properties have been assessed and their feasibility for pseudodynamic tests has been corroborated, the choice of an appropriate structure-dependent pseudodynamic algorithm might be a difficult task. This is because some undiscovered, adverse properties were found for specific structure-dependent algorithms, although their basic properties have been well explored. Because the adverse properties are not well disclosed for these structure-dependent pseudodynamic algorithms, they might lead to inaccurate test results. This paper summarized both the favorable and adverse numerical properties of the pseudodynamic algorithms so that appropriate pseudodynamic algorithms can be identified. This paper assessed and compared most structure-dependent pseudodynamic algorithms, and recommended some structure-dependent pseudodynamic algorithms for engineering practice. Both recommended nondissipative and dissipative structure-dependent algorithms are very suitable for pseudodynamic tests because they possess favorable properties but exhibit no adverse properties. It was also substantiated that numerical damping cannot be used to overcome an overshoot caused by weak instability.
Choices of Structure-Dependent Pseudodynamic Algorithms
Chang, Shuenn-Yih (author)
2019-02-27
Article (Journal)
Electronic Resource
Unknown
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