دانلود مقاله ISI انگلیسی شماره 57773
عنوان فارسی مقاله

رفتار مکانیکی کامپوزیت مقره توخالی الکتریکی : مطالعه تجربی و تحلیلی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
57773 2015 13 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Mechanical behavior of electrical hollow composite post insulators: Experimental and analytical study
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Engineering Structures, Volume 93, 15 June 2015, Pages 129–141

کلمات کلیدی
مقره الکتریکی ؛ کامپوزیت عایق توخالی هسته ای؛ آزمون چرخه ای؛ آزمون تجربی؛ مدل تحلیلی؛ رفتار دینامیکی
پیش نمایش مقاله
پیش نمایش مقاله رفتار مکانیکی کامپوزیت مقره توخالی الکتریکی : مطالعه تجربی و تحلیلی

چکیده انگلیسی

Electrical post insulators are important components of electrical substations since any type of failure in such insulators leads to the breakdown of the local network. Although the electrical substations are often in service condition, any horizontal excitation due to the earthquake, or any extreme event, may cause lateral deformation and damage to the post insulators. Hollow composite post insulators, a new and evolving technology, have a very complex mechanical behavior due to their materials and connections. To date, the design of such post insulators has been based on the limited test results available in the literature. Most of experiments have been conducted on small-scale specimens focusing on the elastic response. This study presents a series of experiments conducted on a full-scale electrical hollow composite post insulator to investigate the static and dynamic mechanical behaviors, while a computational model is derived. The test series comprise, pull and cyclic quasi-static tests in addition to impact hammer tests, to assess the mechanical behavior of the insulators subjected to the lateral forces at different stages of damage. The key experimental results include the pre-peak force–displacement relationship, the cyclic response, the stiffness and strength deteriorations, and failure modes. The modal frequencies and the corresponding viscous damping ratios for the undamaged and damaged post insulator are calculated using the results of impact hammer tests. An analytical model is derived from the mechanical behavior to simulate the response of the un-damaged and damaged post insulator, and is verified by the test results.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.