کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
782239 1464978 2016 13 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
A new bi-tubular conical–circular structure for improving crushing behavior under axial and oblique impacts
ترجمه فارسی عنوان
ساختار دایره ای جدیدی از لوله های دو لوله ای برای بهبود رفتار خرد کردن تحت تاثیرات محوری و متخلخل است
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کلمات کلیدی
لوله دو جداره فوم پر شده ضربه برشی، جذب انرژی، خرد کردن، خرابی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• New double-walled structure with better energy absorption introduced.
• Effectiveness the structure shown by comparing with common structures.
• Amending the peak crushing load while improving other crushing characteristics.
• Parametric study including geometrical and material properties carried out.

In this study single and double wall structures for crashworthiness are investigated to introduce a novel system with better energy absorption and crushing characteristics under both axial and oblique loading. The new developed double wall structure is constructed from inner conical and outer circular tubes, incorporated with and without foam filler. Foam filled bi-tubular structure subject to direct axial and oblique impact loadings are simulated using nonlinear finite element analysis software package LS-DYNA. Numerical simulations obtained via non-linear explicit dynamic FEM are firstly validated using theoretical and experimental solutions. Next, effectiveness of the new developed bi-tubular structure has been shown by comparing with similar common thin-walled structures. Different types of structures namely bi-tubular empty and foam filled new design, empty and filled frusta as well as empty and foam filled circular tubes were considered in order to make a more insightful of capabilities of the proposed structure. A parametric study including the effect of geometrical and material properties of the structure on the crashworthiness has been carried out. Results show the possibility of amending the peak crushing load along with keeping other energy absorption characteristics unchanged or even improved. Also an improvement in absorbed energy under oblique loading by using the new developed structure is observed.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mechanical Sciences - Volume 105, January 2016, Pages 253–265
نویسندگان
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