Determination of the constants of Zerilli-Armstrong model using inverse Taylor test
- سال انتشار: 1392
- محل انتشار: کنفرانس دو سالانه بین المللی مکانیک جامدات تجربی
- کد COI اختصاصی: WMECH02_043
- زبان مقاله: انگلیسی
- تعداد مشاهده: 1231
نویسندگان
چکیده
Tayolr test is a popular experimental technique which is widely used to study the response of materials at high strain rates and elevated temperatures. The technique, however, suffers from serious shortcomings such as in situ heating the specimens for testing materials at elevated temperatures. We introduce the inverse Taylor test in which the difficulties which are normally associated with the conventional Taylor test are eliminated. The new technique is used to identify the constants of Zerilli-Armstrong material model for a copper alloy in this work. In this technique, the target (specimen) and the projectile (striker) swap their positions as usually considered in the conventional Taylor test. The experiments are conducted at ambient and elevated temperatures under high impact velocities. The constants of the model correspond to the case when the difference between the experimental and numerical mushroomed profiles of the specimen after impact is optimized. The accuracy of the constants is verified by quasi-static test. The results indicate that Z-A model can successfully predict the copper alloy deformation in the inverse Taylor test.کلیدواژه ها
Inverse Taylor test, zerilli-Armstrong model, LS-DYNa simulation, Optimizationمقالات مرتبط جدید
- Analytical determination of flexural rigidity of thin-walled pultruded composite I-beams
- Matrix-Dominated Damage Process in CFRP Composite Laminates underFlexural Loading Condition
- Indentation Size Scale Effect on Mechanical Properties of Cold SprayCoating
- Determination of Forming Limit Diagrams for Tailor Welded Blanks
- Control of dynamic building façade: design, analysis and experiments
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.