کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4912379 | 1428550 | 2016 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Axial crushing of triaxially braided composite tubes at quasi-static and dynamic rates
ترجمه فارسی عنوان
خرد کردن محوری از لوله های کامپوزیتی سه تایی بافته شده در نرخ های شبه استاتیک و پویا
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کلمات کلیدی
لوله های کامپوزیت بافته شده، ضربه محوری، خرد شدن پیشرفته، جذب انرژی، اثرات نرخ،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This paper presents the results of an experimental investigation into the behaviour of braided CFRP tubes subjected to quasi-static and dynamic axial crushing. Tubes of six different geometries, with round, rectangular or square cross-sections, with 2-4 plies of triaxial braids, were tested. Two types of square tubes were also tested with a plug initiator. Comparisons were made by examining the failure modes, load-displacement curves, specific energy absorption (SEA), and the ratio of the peak load to the average progressive crush load. When tested without a plug initiator, the crush characteristics of these tubes differed significantly under the two loading rates. Under quasi-static crush, tubes showed a greater tendency to fail in an unstable manner, characterized by global buckling, folding of the walls and crushing at both ends of the tube. Therefore, quasi-static crush testing should be used with caution when evaluating dynamic response of a structure. In dynamic testing, seven out of the eight configurations failed in a stable manner, with damage initiating at the bottom and propagating up the length of the tube in a splaying type failure mode. The smaller square and the round tubes performed the best, displaying higher SEA and lower load ratio values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 157, 1 December 2016, Pages 197-206
Journal: Composite Structures - Volume 157, 1 December 2016, Pages 197-206
نویسندگان
Carla McGregor, Reza Vaziri, Anoush Poursartip, Xinran Xiao,