کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6774620 | 1431994 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Design and Experimental Validation of a Re-centring Viscous Dissipater
ترجمه فارسی عنوان
طراحی و تایید تجربی یک دیسیپاتور چسبناک مجدد
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کلمات کلیدی
دستگاه چسبناک، حلقه بهار، دوباره تمرکز، دستگاه ترکیبی دیسپاتور،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
The design and experimental validation of a passive, hybrid self-centring supplemental damper for low-damage structures is presented. The device combines rate-dependent dissipation of a viscous damper with the rate-independent dissipation and re-centring restoring force of a ring-spring in a parallel fashion. Experimental proof-of-concept validation tests use sinusoidal displacement inputs consisting of [25, 30]Â mm amplitudes and [0.25-1.75]Â Hz frequencies, for two levels of ring-spring pre-load equal to 21% and 34% of the design force. Each component is tested individually to characterise and delineate their specific contributions to the overall device. The ring-spring has a design force capacity of 26Â kN and a return stiffness ratio of 34% that remain independent of the velocity input. The viscous device input velocities of [50-330]Â mm/s provide velocity dependent dissipative forces with a maximum of 22Â kN at the maximum input velocity. Individual results in summation match the hybrid device results for the same input, indicating no loss of efficiency in the hybrid device load transfer. Overall, these results offer a range of new, easily implemented options for energy dissipation in developing low-damage structures, which can also provide necessary re-centring capability within the same package. The overall method is readily generalised for a wide range of hybrid device force capacities and design requirements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Structures - Volume 13, February 2018, Pages 193-200
Journal: Structures - Volume 13, February 2018, Pages 193-200
نویسندگان
Farzin G. Golzar, Geoffrey W. Rodgers, J. Geoffrey Chase,