کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
277221 1430209 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Capturing yield surface evolution with a multilinear anisotropic kinematic hardening model
ترجمه فارسی عنوان
گرفتن تکامل سطح عملکرد با یک مدل سخت کننده سینماتیک چندگانه ناهمسانگرد
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

Many authors have observed experimentally that the macroscopic yield surface changes substantially its shape during plastic flow, specially in metals which suffer significant work hardening. The evolution is frequently characterized by a corner effect in the stress direction of loading, and a flatter shape in the opposite direction. In order to incorporate this effect many constitutive models for yield surface evolution have been proposed in the literature. In this work we perform some numerical predictions for experiments similar to the ones performed in the literature using a multilayer kinematic hardening model which employs the associative Prager’s translation rule. Using this model we prescribe offsets of probing plastic strain, so apparent yield surfaces can be determined in a similar way as it is performed in the actual experiments. We show that similar shapes to those reported in experiments are obtained. From the simulations we can conclude that a relevant part of the apparent yield surface evolution may be related to the anisotropic kinematic hardening field.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 81, 1 March 2016, Pages 329–336
نویسندگان
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