TY - JOUR
T1 - Behavior of polycal wire rope isolators subjected to large lateral deformations
AU - Leblouba, Moussa
AU - Rahman, M. E.
AU - Barakat, Samer
N1 - Funding Information:
This paper is based upon work supported by the Ministry of Higher Education (MOHE), Malaysia under the FRGS grant scheme and by the Sustainable Construction Materials and Structural Systems research group (SCMASS), University of Sharjah, Sharjah.
Publisher Copyright:
© 2019 Elsevier Ltd
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/7/15
Y1 - 2019/7/15
N2 - Polycal Wire rope isolators (PWRIs) have found many applications, especially in naval and aerospace structures. PWRIs are used to isolate individual equipment or complete floating floors against undesirable shocks and vibrations. A PWRI consists of arch shaped wire rope strands connected between circular plates. This architecture results in an isolator with a nonlinear hysteresis behavior capable of providing the necessary damping to dissipate an input energy. In this paper, a complete study of the shear cyclic behavior of PWRIs is presented. Twelve isolators of different geometries were tested in shear mode under different loading rates. The stiffness, energy dissipation, and damping were determined and related to the geometric and mechanical properties of each isolator. To overcome the limitations of existing mathematical models in representing the hysteretic behavior of wire rope isolators, a new model is proposed, in which, the Bouc-Wen-Baber-Noori model of hysteresis was adopted in conjunction with a modulating function. The model is shown to accurately replicate the soft-hardening, symmetric, hysteresis loops.
AB - Polycal Wire rope isolators (PWRIs) have found many applications, especially in naval and aerospace structures. PWRIs are used to isolate individual equipment or complete floating floors against undesirable shocks and vibrations. A PWRI consists of arch shaped wire rope strands connected between circular plates. This architecture results in an isolator with a nonlinear hysteresis behavior capable of providing the necessary damping to dissipate an input energy. In this paper, a complete study of the shear cyclic behavior of PWRIs is presented. Twelve isolators of different geometries were tested in shear mode under different loading rates. The stiffness, energy dissipation, and damping were determined and related to the geometric and mechanical properties of each isolator. To overcome the limitations of existing mathematical models in representing the hysteretic behavior of wire rope isolators, a new model is proposed, in which, the Bouc-Wen-Baber-Noori model of hysteresis was adopted in conjunction with a modulating function. The model is shown to accurately replicate the soft-hardening, symmetric, hysteresis loops.
KW - Bouc-Wen-Baber-Noori
KW - Damping
KW - Energy dissipation
KW - Hysteresis behavior
KW - Stiffness
KW - Vibration isolation
KW - Wire rope isolator
UR - http://www.scopus.com/inward/record.url?scp=85064632249&partnerID=8YFLogxK
U2 - 10.1016/j.engstruct.2019.04.039
DO - 10.1016/j.engstruct.2019.04.039
M3 - Article
AN - SCOPUS:85064632249
SN - 0141-0296
VL - 191
SP - 117
EP - 128
JO - Engineering Structures
JF - Engineering Structures
ER -