• biaxial stress effects on estimating j under combined mechanical and thermal stresses

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 809
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     in this paper, the applicability to bi-axial stress states of a simple approximation proposed in our previous work for quantifying the elastic–plastic j under combined primary and secondary stresses is investigated.to produce the bi-axial stress states, circumferential cracked pipes under combined pressure, axial tension (or compression) and thermal stresses are considered. the results suggest that the proposed approximation can be applied to bi-axial stress states, and is slightly more conservative for bi-axial mechanical stresses than for uni-axial ones. the degree of conservatism decreases with increasing strain hardening exponent and with increasing relative magnitude of secondary stress.

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