نتایج جستجو برای: warm hydroforming

تعداد نتایج: 28944  

Journal: :Memory 2013
Osman S Kingo Annette Bohn Peter Krøjgaard

Researchers have recently used warm-up questions concerning childhood memories at specific early ages (e.g. 3 years of age) in an attempt to facilitate the retrieval process on the subsequent question regarding the earliest memory. Although this methodology may indeed facilitate the retrieval process by conducting the test in a manner resembling ordinary dialogue, the methodology might also uni...

Ghazanfari, Hashemi, Masoumi Khalil Abad,

In this study, an extended stress-based forming limit diagram (FLD) for prediction of necking based on the Marciniak and Kucznski (M-K) model is represented and applied in tube hydroforming. The bulge forming of a straight tube is simulated by finite element method and verified with published experimental data. This adaptive simulation technique is based on the ability to detect the onset an...

Journal: :international journal of advanced design and manufacturing technology 0
milad janbakhsh iran university of science and technology mohammad riahi iran university of science and technology faramarz djavanroodi iran university of science and technology

recently, offshore and ocean engineering have been dealing with novel materials that play a significant role in reducing the weight of structures used in the ship construction industry. 5xxx series of aluminum alloys are of the novel alloys are suitable for construction of ship hulls and the topside structures of offshore platforms. within different 5xxx aluminum alloys, aa5083 is of great impo...

Journal: :international journal of advanced design and manufacturing technology 0
behrooz zareh m.sc, department of mechanical engineering, babol noshirvani university of technology, shariati street, babol, mazandran, p. o. box 484, iran. abdolhamid gorji assistant professor, department of mechanical engineering, babol noshirvani university of technology, babol, iran mohammad bakhshi professor, department of mechanical engineering, babol noshirvani university of technology, babol, iran salman nourouzi assistant professor, department of mechanical engineering, babol noshirvani university of technology, babol, iran

there are many parameters that affect the sheet hydroforming process such as fluid pressure, material properties, interfacial friction between blank and tool surfaces, etc. in this paper, a fem-based taguchi method is used to determine the effects of forming parameters on the quality of part formability in the process of hydrodynamic deep drawing assisted by radial pressure. four important form...

Journal: :Metals 2022

The investigation into the circumferential mechanical properties of tubular materials has been receiving increasing attention, since tube hydroforming process used in forming field, because have a significant effect on hydroformability materials. In present study, method for evaluation with flaring test was proposed. expressions yield stress, strain hardening coefficient and exponent values wer...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی 1389

با توجه به افزایش روزافزون محدودیت ها و قوانین موجود برای کاهش آلودگی و حفظ محیط زیست، اقدامات فراوانی از سوی سازندگان خودروها لحاظ می گردد. یکی از این اقدامات، قرار دادن کاتالیست در منیفولد خروجی موتورها به منظور مقدار nox می باشد، اما کاتالیست ها در دماهای بسیار بالا و یا بیش از حد پایین کارایی مناسبی ندارند لذا کنترل دمای گازهای خروجی از موتور و رساندن به یک محدود? مناسب موجب افزایش کارایی و...

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