کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
776195 1463479 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Predicting the strength of adhesively bonded joints of variable thickness using a cohesive element approach
ترجمه فارسی عنوان
پیش بینی قدرت اتصال اتصالات چسبنده ضخامت متغیر با استفاده از یک روش عنصر انعطاف پذیر
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی

One major characteristic of bonded structures is the highly localised nature of deformation near sharp corners, ply-terminations, and ends of joints where load transfer occurs. This paper presents an investigation of the use of a cohesive zone model in predicting the strong effects of stress concentration due to varying adherend thickness on the pull-off strength measured by the Pneumatic Adhesion Tensile Testing Instrument. A comparison is made with the point-strain-at-a-distance criterion, where the plastic deformation of the adhesive is analysed using a modified Drücker–Prager/cap plasticity material model. The fracture properties of the cohesive zone model were determined using double-cantilever and end-notch flexural specimens, and the cohesive strengths were measured using tensile and lap shear tests. Comparisons with experimental results reveal that the cohesive zone model with perfectly plastic (or non-strain-softening) cohesive law provides accurate predictions of joint strengths.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Adhesion and Adhesives - Volume 58, April 2015, Pages 44–52
نویسندگان
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