Report of practical work at the department of Metal Forming

Понедельник, 05 Декабрь 2016

Докладчик

Igor Uwarow

  • Должность: student
  • Звание, степень: Master of Science – Mechanical Engineer
  • Организация: University of Paderborn in Germany
  • Город: Paderborn
  • Направление Алюминий, лист, моделирование, прокатка, сталь

    Научный консультант

    Фролов Ярослав Викторович

    Фролов Ярослав Викторович

  • Должность: заведующий кафедрой
  • Звание, степень: проф.; д.т.н.
  • Организация: НМетАУ
  • Подразделение: кафедра "Обработка металлов давлением"
  • Город: Днипро
  • E-Mail: Этот адрес электронной почты защищен от спам-ботов. У вас должен быть включен JavaScript для просмотра. | Направление Другое, Спрейерное охлаждение, Трубы, Холодная и теплая пильгерная прокатка труб


    Аннотация

    My task is “Experimental and FEM study of partial roll bonding of aluminum sheets”, for this purpose we formed a team consisting of the student Alexander K., the aspirant Anna M. and the candidate Oleg R.
    Roll bonding of composites is already states of the art process, partial roll bonded composites are quite unexplored. Possible field of application is the construction of Fridge Evaporators, solar panel collectors or coolers for automotive use. The latest progress in flow simulation with Computational Fluid Dynamics leads to new designs, reducing the pressure drop and increasing heat exchange. Partial roll bonding can be a cheap and easy way to manufacture the needed parts.

    Results

     - The elongation coefficient for the samples rolled on the smaller rolls is higher than for the big rolls. This can be explained by the shorter deformation zone

    The roll force for samples with wire inlets rolled on the bigger mill is higher than for samples with separating agent. This difference disappears for the experiments on the smaller rolls. This can be explained with the shorter deformation zone and therefore more focused roll force. The overall roll force on the rolls size d0 = 130mm is smaller compared to d0 = 220mm.

    The process of roll bonding with and without inlets will be simulated using the FEM software Quantorform. The Geometry representing the roll process is designed in SolidWorks and transferred to a QForm compatible format by QShape.

     

    Results:
    The elongation coefficient, spread coefficient and deformation coefficient are equal to the real experiments. The force graph cannot be directly compared, due to influences on the real experiments by the rivets and other inhomogeneity’s.
    In the next step the FEM simulation for partial bonding with a steel and aluminum wire will be performed.

     

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