کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
278565 1430291 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ratcheting and wrinkling of tubes due to axial cycling under internal pressure: Part II analysis
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Ratcheting and wrinkling of tubes due to axial cycling under internal pressure: Part II analysis
چکیده انگلیسی

Part I presented a set of experiments in which pressurized tubes were cycled axially under stress control about a compressive mean stress. This loading history causes biaxial ratcheting involving compressive axial strain and expansion of the diameter of the tube. The compressive strain in turn induces the initiation and growth of axisymmetric wrinkles. Persistent cycling resulted in localization of the wrinkles and collapse. In Part II the problem is first modeled as a shell with initial axisymmetric imperfections while the biaxial ratcheting of the material is modeled using the Dafalias–Popov two-surface nonlinear kinematic hardening model. It is demonstrated that when suitably calibrated this modeling framework reproduces the prevalent ratcheting deformations and the evolution of wrinkling including the conditions at collapse accurately for all experiments. The calibrated model is then used to evaluate the ratcheting behavior of pipes under thermal-pressure cyclic loading histories experienced by axially restrained pipelines.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 48, Issue 20, 1 October 2011, Pages 2827–2836
نویسندگان
, ,