کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10418340 | 902744 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An enhanced constitutive material model for machining of Ti-6Al-4V alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: An enhanced constitutive material model for machining of Ti-6Al-4V alloy An enhanced constitutive material model for machining of Ti-6Al-4V alloy](/preview/png/10418340.png)
چکیده انگلیسی
Material failure due to adiabatic shear banding is a characteristic feature of chip formation in machining of Ti-6Al-4V material. In this paper, an enhanced Zerilli-Armstrong (Z-A) based material flow stress model is developed by accounting for the effects of material failure mechanisms such as voids and micro-cracks on the material flow strength during shear band formation. These effects are captured via a multiplicative failure function in the constitutive material flow stress model. The strain and strain rate dependence of the material failure mechanism are explicitly modeled via the failure function. The five unknown constants of the failure function are calibrated using cutting force data and the entire model is verified using separate force, chip segmentation frequency and tool-chip contact length data from orthogonal cutting experiments reported by Cotterell and Byrne, 2008a, Cotterell and Byrne, 2008b. Model predictions of these quantities based on the enhanced material model are shown to be in good agreement with experiments over a wide range of cutting conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 213, Issue 12, December 2013, Pages 2238-2246
Journal: Journal of Materials Processing Technology - Volume 213, Issue 12, December 2013, Pages 2238-2246
نویسندگان
Rui Liu, Shreyes Melkote, Raghuram Pucha, John Morehouse, Xiaolin Man, Troy Marusich,