کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
801907 | 1467698 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Critical wave lengths and instabilities in gradient-enriched continuum theories
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Continuum material models can be enriched with additional gradients in order to model phenomena that are driven by processes at lower levels of observation. For a systematic comparison of various gradient-enriched continua, dispersion analysis may be used. In this contribution, we will explore the occurence of critical wave lengths and its implications for the material stability. In particular, we will present a unifying theorem that permits to assess the stability of elastic, hardening and softening gradient-enriched continua by means of a critical wave length analysis, whereby the upper or lower bound nature of the critical wave length indicates whether the model is stable or unstable.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics Research Communications - Volume 34, Issues 7â8, OctoberâDecember 2007, Pages 515-521
Journal: Mechanics Research Communications - Volume 34, Issues 7â8, OctoberâDecember 2007, Pages 515-521
نویسندگان
Thomas M. Michelitsch, Inna M. Gitman, Harm Askes,