کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
278362 1430271 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Time integration of a model for martensite detwinning and reorientation under nonproportional loading using Lagrange multipliers
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Time integration of a model for martensite detwinning and reorientation under nonproportional loading using Lagrange multipliers
چکیده انگلیسی

The paper presents a consistent integration scheme for a model of shape memory alloys that takes into account the processes of detwinning and reorientation of martensite. Lagrange multipliers are used to account for the saturation condition on the martensitic phase, which expresses the requirement on the inelastic deformation of martensite not to exceed a material-specific value. A detailed procedure for implicit time integration of the constitutive equations is given, including a comprehensive derivation of a closed-form expression for the consistent tangent moduli. The equations are implemented into a commercial finite element software, which is used to simulate the response of martensitic SMA structures to complex loading. The results are shown to agree with experimental data taken from the literature.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 49, Issue 21, 15 October 2012, Pages 2951–2961
نویسندگان
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