نتایج جستجو برای: roll forming
تعداد نتایج: 127679 فیلتر نتایج به سال:
A standard test field containing numerous strong sources has been observed twice with the ASKAP BETA system, with the third axis of motion – the roll axis – disabled for the second run. These two data sets are subjected to identical calibration and imaging pipelines in order to gauge the e↵ects of the roll axis when observing with a Phased Array Feed. Present beam forming techniques only allow ...
determination of the deformation length is one of the first steps in roll forming design. roll forming industries are very interested in explicit simple relationsfor prediction the deformation length without using trail-and-error methods at workshop or time consuming finite element simulations. in this paper, elastic properties and work-hardening behaviour of the strip are considered in additio...
The transverse bowing greatly affects the accuracy of roll-forming asymmetric corrugated channels (ACC). In order to control this defect, paper first elucidates its mechanism production. Then, is explored by finite element method (FEM) using ABAQUS 2016 software and effects forming parameters are analyzed. Also, a linear regression model built Minitab 19 evaluate their effects, which standard v...
Lightweight design using high‐strength aluminum alloys has gained importance due to the continuing need for weight reduction and increasing crash safety requirements in automotive industry. There are various manufacturing processes available processing alloys. Herein, production of parts by roll forming stamping based on example an AA7075‐T6 hat profile is compared. Roll represents a continuous...
پایان نامه حاضر به طراحی قالبهای (غلتکهای) شکل دهی غلتکی سرد cold roll forming لوله با درزجوش طولی به کمک کامپیوتر می پردازد. با یک بررسی مفصل، پیچیدگی و ناشناخته بودن فرایند شکل دهی غلتکی سرد تایید شده است . علی رغم گسترش آن هنوز این فرایند بطورکامل اتوماتیک نشده و اصول و قوانین کمی برای تنظیم و آماده نمودن دستگاههای آن بکار می رود. درابتدا مطالعات و بررسیهای فراوانی بمنظور شناخت و درک این فرا...
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