| عنوان فارسی مقاله: |
تاثیر تنش اصلی میانگین بر رفتار شکست سنگ؛ مطالعه عددی |
| عنوان انگلیسی مقاله: |
The influence of the intermediate principal stress on rock failure behaviour: A numerical study |
چکیده
1- مقدمه
2-ابزار عددی (EPCA3D)
2-1- تعریف ناهمگنی
2-1-1- روش احتمالی
2-1-2: روش قطعی
2-2- قانون به روز کردن ماشین سلولی
2-3-1- معیار مور کولمب
2-3-2- معیار تسلیم دراکر – پراگر
2-4- شبیه سازی رفتار پس از شکست
3- شبیه سازی شکست سنگ در شرایط تنش چند محوری
3-1- مدل عددی و پارامترهای مکانیکی
3-2- مورد همگن
3-3- مورد ناهمگن
3-4- تاثیر صفحات بارگذاری بر مقاومت سنگ
4- نتیجه گیری
کلمات کلیدی :
The effect of the intermediate principal stress on fault formation and c ...https://www.researchgate.net/.../228927886_The_effect_of_the_intermediate_principal_...For different constant s 2 and s 3 magnitudes, the maximum principal stress (s 1) was raised until a post failure stage was reached, and a through-going fault had ... driven by the fact that the intermediate principal stress (σ 2 ) has a potential influence on strength and deformation as well as fracturing behaviors of rocks.Influence of intermediate principal stress on rock ... - ResearchGatehttps://www.researchgate.net/.../222336541_Influence_of_intermediate_principal_stress...Full-text (PDF) | The influence of the intermediate principal stress on rock fracturing and strength near excavation boundaries is studied using a FEM/DEM combi... ... Modeling of failure characteristics of rectangular hard rock influenced by sample height-to-width ratios: A finite/discrete element approach. Article. Mar 2017 ...Failure Probability Model considering the Effect of Intermediate ...https://www.hindawi.com/journals/mpe/2015/960973/by Y Zheng - 2015 - Cited by 2 - Related articlesNov 8, 2015 - A failure probability model is developed to describe the effect of the intermediate principal stress on rock strength. Each shear plane in rock samples is considered as a micro-unit. The strengths of these micro-units are assumed to match Weibull distribution. The macro strength of rock sample is a synthetic ...