کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6774619 1431993 2018 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic Friction Coefficient and Performance of Asymmetric Friction Connections
ترجمه فارسی عنوان
ضریب اصطکاک پویا و عملکرد اتصالات اصطکاک نامتقارن
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
An experimental evaluation is performed, quantifying the effective dynamic friction coefficient as a function of connection clamping force from clamping bolt torque and input displacement, using torques from 20 to 500 Nm and a series of sinusoidal input motions. Bolt elongation and associated clamping force are evaluated with the measured resistive sliding force of the connection to derive a dynamic coefficient of friction for the AFC. Overall results show that friction is weakly dependent on input motion amplitude, but is direction dependent for all torques with larger friction coefficients in the positive, tension direction of input motion, where larger assembly torques over 200 Nm had larger direction dependence. Clamping bolt torques over 200 Nm result in bolt yielding during input motions, which would necessitate post-earthquake inspection and potential repair, and reduce resistive sliding forces during a subsequent seismic event. The overall results present a generalizable analysis to guide design, which is extendable to similar friction connections or devices. Equally, the results also provide a better understanding to enhance adoption/uptake of these friction connections in steel structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Structures - Volume 14, June 2018, Pages 416-423
نویسندگان
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