مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

شبیه سازی المان محدود فرایند خرج گود و مقایسه نتایج با تست های آزمایشگاهی و مدل جت بیرخوف

نویسندگان
1 دانشیار دانشگاه صنعتی نوشیروانی بابل
2 دانشجوی دکترای دانشکده مهندسی مکانیک دانشگاه صنعتی نوشیروانی بابل
3 استاد مهندسی مکانیک / دانشگاه صنعتی نوشیروانی بابل
چکیده
هدف از این مقاله شبیه‌سازی فرایند خرج گود با استفاده از روش حل اویلری می‌باشد. برای این منظور از تحلیل اجزای محدود جهت شبیه‌سازی فرایند خرج گود استفاده شده است. در این شبیه‌سازی کل مدل از نوع المان‌های اویلری در نظر گرفته شده است. پارامتر نرخ کرنش و اثرات دمایی که تحت تغییر شکل‌های بسیار شدید ایجاد می-شود، در این شبیه‌سازی لحاظ شده است. برای صحت‌سنجی روش حل المان محدود، نتایج شبیه‌سازی با نتایج بدست آمده در تست‌های آزمایشگاهی و مدل تحلیلی جت بیرخوف مقایسه شده است. مقایسه عمق نفوذ جت در فرایند شبیه‌سازی با نمونه مشابه آزمایشگاهی به خوبی گواه بر صحت نتایج تحلیل اجزای محدود بوده است. همچنین مقایسه پارامترهایی نظیر سرعت فروپاشی لاینر، توزیع سرعت در طول جت و نیز هندسه جت شکل گرفته نشان داده است که نتایج شبیه‌سازی به خوبی با نتایج مدل جت بیرخوف همخوانی داشته است . لازم به ذکر است که در این شبیه‌سازی از نرم‌افزار المان محدود آباکوس جهت تحلیل فرایند خرج‌گود بهره گرفته شده است.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Finite element simulation of shaped charge and comparison of results with experimental tests and Birkhoff jet model

نویسندگان English

Alireza Fathi 1
Pouya Dehestani Kolagar 2
Hamid Reza Mohammadi Daniali 3
1 associated professor/Babol university of technology
2 Ph.D student, Department of Mechanical Engineering, Babol University of Technology
3 Professor, Department of Mechanical Engineering, Babol University of Technology
چکیده English

The aim of this paper is simulation of shaped charge process using Eulerian analysis. To this end, the finite element analysis was used to simulate the process of shaped charge. In this simulation, whole of the model has been considered from Eulerian elements. Verification of finite element method has been confirmed by comparing simulation with experimental tests and Birkhoff model. Comparison of penetration depth in finite element analysis with experimental samples has shown that the results are in good agreement with each other. Also comparing parameters such as liner collapse velocity, velocity distribution in jet length and jets profile has indicated that the simulation results are close to Birkhoff model. It should be noted that ABAQUS finite element software is used in this simulation to analyze the process of shaped charge.

کلیدواژه‌ها English

shaped charge
Finite element simulation
Liner collapse
jet formation
Jet penetration
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