• ratcheting and wrinkling of tubes due to axial cycling under internal pressure: part ii analysis

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 615
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     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.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین رویدادها
مقالات جدیدترین ژورنال ها