Energy Absorption Characteristics of Circular Tubes with Circular Circumferential Pattern in Axial Crushing
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Energy absorbents are very common in different industries. As can be inferred, they absorb energy when it is necessary in order to prevent possible damages, those could endanger sensitive components. In this study energy absorb er applicable in an automotive bumper system is investigated. It is focused on thin-walled tubular absorbents in axial crushing mode. In this kind of absorb er, tubes wall buckles locally and deformation in form of sequential folds holds energy and absorbs counterpart external energy. One method to further control energy absorption is to introduce circumferential patterns on tubes wall. This pattern can dictate the evolution of folds within crushing distance. Here, the effect of patterns parameter, like geometry, wave length and depth on energy absorbing behavior of aluminum thin-walled tubes is studied. Energy absorption in static axial crushing is simulated using Finite Element Method. Different patterns geometry, like linear, circular and sinusoidal patterns were generated and results were compared with plain tube, that with no pattern. The effect of introducing patterns on different energy absorption characteristics namely, first force pick, mean crushing force, crushing force efficiency, energy absorbed, specific energy absorbed and crushing mode are explored. Findings show that patterns are very influential on energy absorbing behavior of thin-walled tubes. Results show acceptable combination of patterns parameters in each set of patterns geometry; even though circular pattern yields more desirable outputs.
Keywords:
Language:
Persian
Published:
Iranian Journal of Mechanical Engineering, Volume:20 Issue: 1, 2018
Pages:
187 to 208
magiran.com/p1861710
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 1,390,000ريال میتوانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
In order to view content subscription is required
Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!