شبیه‌سازی رایانه‌ای فرآیند ولکانش به‌منظور محاسبۀ زمان پخت در یک قطعۀ لاستیکی با اصلاح معادلۀ سینیتک پخت

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه فردوسی مشهد

2 دانشگاه مهندسی فناوری های نوین

چکیده

در این مقاله از روش حل عددی برای شبیه‌سازی فرآیند پخت لاستیک و محاسبۀ زمان پخت یک قطعۀ لاستیکی تولید شده به‌روش قالب‌گیری تزریقی استفاده شده است. مهم‌ترین نوآوری کار حاضر محاسبۀ زمان پخت با اصلاح مدل سینیتیک پخت است. معادلات سینیتیک در یک کد جانبی گنجانده شده و با افزودن آن به نرم‌افزار فلوئنت، امکان شبیه‌سازی عددی فرآیند پخت در یک قطعۀ لاستیکی، فراهم گردیده است. خواص سینیتیکی آمیزه، ظرفیت گرمایی ویژه و لزجت لاستیک از آزمایش به‌دست می‌آیند. به‌منظور محاسبۀ زمان پخت به‌روش تجربی از نتایج تست استحکام استفاده شده است. زمان پرشدن قالب و زمان پخت حاصل از حل عددی، سازگاری خوبی با زمان پخت حاصل از نتایج آزمایشگاهی دارند.

کلیدواژه‌ها

عنوان مقاله [English]

Simulation of Rubber Vulcanization for Calculation of the Curing Time with Modification of the Kinetic Model

نویسندگان [English]

  • Mohammad Reza Erfanian 1
  • Seyed Mohammad Javadi 2
  • Mohammad Moghiman 1
1 ferdowsi University of Mashhad
2 University of Advanced Technologies Engineering, Quchan
چکیده [English]

The present work is focused on the computational method for simulation of the rubber vulcanization process in injection molding machines. The main innovation of the work is the calculation of the curing time in a rubbery part using the modification of curing kinetic model. For solving the curing equations, the computer code is developed in “UDF” module of the Fluent. The parameters of curing model, specific heat and viscosity of the rubber are obtained from the experiment. In order to evaluate the experimental curing time, a mechanical compression test is performed on the rubbery part at different times. Predicted mold filling and curing times are compared with experimental data, which confirmed the accuracy and applicability of the method.

کلیدواژه‌ها [English]

  • Numerical simulation
  • Vulcanization
  • Injection Molding
  • Curing Time

مراجع

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