| Vibration-Based Detection of Damage due to Internal Overpressure in Prestressed Concrete Containment Vessel (PCCV) |
| کد مقاله : 1085-ISAV |
| نویسندگان |
|
علیرضا رهایی *1، مصطفی ایرانی پرست2، احمد شکوه فر3، محمد رهایی4 1دانشگاه صنعتی امیرکبیر 2دانشگاه صنعتی امیرکبیر- دانشکده مهندسی عمران- تهران 3دانشگاه آزاد اسلامی قزوین-دانشکده مهندسی عمران- قزوین 4دانشگاه صنعتی شریف- دانشکده مهندسی عمران-تهران |
| چکیده مقاله |
| Structural damage detection using incomplete measured response data has emerged as a new research area in civil, mechanical, biomechanical, and aerospace engineering communities in recent years. The purpose of this paper is to present a sensitivity-based finite element model (FEM) updating method in the frequency domain. The transfer function (TF) of a damaged structure is approximated using the measured natural frequencies of the damaged structure and the analytical mode shapes of the intact structure. A general damage case with arbitrary changes in stiffness of all elements has been applied to a prestressed concrete containment vessel (PCCV). Furthermore, the finite element model (FEM) of the NUPEC/NRC 1/4-scale model of a PCCV containment of the Ohi-3 power plant is calibrated using measured dis-placement data. The calibrated model was utilized for the numerical investigation of the pro-posed method. In the numerical cases, a 15% random error is applied to data of damaged structure. |
| کلیدواژه ها |
| Frequency Response Function; Structural model updating; Damage detection; Experimental test; Scaled PCCV model |
| وضعیت: پذیرفته شده برای ارائه شفاهی |