کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
786203 1465620 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An explicit, straightforward approach to modeling SMA pseudoelastic hysteresis
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
An explicit, straightforward approach to modeling SMA pseudoelastic hysteresis
چکیده انگلیسی


• Direct, explicit approach to modeling SMA pseudo-elasticity.
• New nonlinear hardening rule with substantial coupling.
• Thermodynamic restrictions are rendered free and explicit.
• Direct, explicit approach to matching realistic hysteresis loops of any given shape.
• Bypassing usual complicated procedures for identifying a large set of unknown parameters.

Toward a straightforward approach to modeling SMA pseudoelastic behavior, a new finite J2J2-flow elastoplastic model with nonlinear combined hardening is proposed by coupling the size change of the yield surface with the moving of the yield surface center. A departure from usual approaches is that any given shapes of hysteresis loops may be automatically generated via explicit procedures in the framework of classical J2J2 elastoplasticity with no reference to any phase variables. Numerical examples are presented to show good accord with test data for Ti–Ni alloys.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Plasticity - Volume 53, February 2014, Pages 228–240
نویسندگان
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