کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4923479 | 1430697 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation and numerical simulation of pallet-rack stub columns under compression load
ترجمه فارسی عنوان
بررسی تجربی و شبیه سازی عددی ستون های زیرین پالت در زیر بار فشرده سازی
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کلمات کلیدی
OSDCompression capacityσepugσpKAEPUSDmaxISDεpAes - AESsld - SldTrue stress - استرس واقعیOut-of-plane displacement - جابه جایی خارج از محدودهLocal mode - حالت محلیFinite element analysis - روش اجزاء محدودStiffness - سفتیThickness - ضخامتTrue strain - فشار واقعیLYS - لیستYoung's modulus - مدول یانگStress-strain curve - منحنی فشار استرسInitial geometric imperfection - ناقص بودن هندسی اولیهKAS - چی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
North American standard requires physical tests to determine the capacity of a pallet-rack stub column. While predicting the column capacity and stiffness, finite element method based numerical simulation may not be considered reliable due to the existence of Initial Geometrical Imperfection (IGI). In this study, an expanded Ramberg-Osgood model is proposed to describe the stress-strain behavior of steel sheet material that exhibits a discontinuous yielding (i.e. relatively long yield plateau). The model was successfully employed in the simulations of the pallet-rack stub column. In order to reduce the prediction error caused by the IGI, an improved numerical simulation strategy was proposed. The strategy was validated by experimental tests, and it was compared with two classical strategies in terms of their prediction accuracy for the column's compression capacity and stiffness. Nonlinear analyses were performed by using a finite element analysis software, ANSYS, and the results show that the improved strategy is more unbiased and accurate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Constructional Steel Research - Volume 133, June 2017, Pages 282-299
Journal: Journal of Constructional Steel Research - Volume 133, June 2017, Pages 282-299
نویسندگان
Peng Zhang, M. Shahria Alam,