Modifying Drucker-Prager Criterion for Elastoplastic Porous Rocks Using a Numerical Integration Algorithm

Article Type:
Research/Original Article (دارای رتبه معتبر)
In the topics related to rock mechanics and geotechnics, elastoplastic criteria are of special importance. This importance makes their numerical implementation necessary. Although most of the existing software in the field of rock mechanics and geotechnics have elastoplastic criteria, the lack of access to their coding core makes it practically impossible for researchers to develop them. Therefore, considering the importance of elastoplastic criteria and the complexity of their implementation, in this study, a suitable scheme was presented to improve the elastoplastic numerical integration algorithm of Darker-Prager criteria. The developed algorithm includes two steps of elastic trial and plastic return-mapping algorithm. In the proposed model, if the elastic trial step is in the elastic domain or on the yield surface, the answer of elasticity is approved. Otherwise, if the trial stress can not confirm the desired conditions in the first step, it is executed by the plastic return-mapping algorithm. This process has been done comprehensively and separately for Drucker-Prager's cone and apex to be able to express the elastoplastic behavior of the material optimally. The presented model was analyzed for the porous rock sample and its validation was confirmed by comparing the numerical results with the laboratory data.
Journal of Aalytical and Numerical Methods in Mining Engineering, Volume:13 Issue: 37, Winter 2024
11 to 19  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 1,390,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
In order to view content subscription is required

Personal subscription
Subscribe for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!