On the Tensile Strength of Granite at High Strain Rates considering the Influence from Preexisting Cracks
المؤلفون المشاركون
Saadati, Mahdi
Forquin, Pascal
Weddfelt, Kenneth
Larsson, Per-Lennart
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2016، العدد 2016 (31 ديسمبر/كانون الأول 2016)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2016-07-14
دولة النشر
مصر
عدد الصفحات
9
الملخص EN
The dynamic tensile behavior of granite samples, when some preexisting cracks are introduced artificially, is investigated.
Spalling tests using a Hopkinson bar are performed and strain rates of ~102 1/s are obtained in both specimen types (with and without initial cracks).
This experimental technique is employed being of the same order as strain rates in rock materials during percussive drilling, the application of interest here.
The dynamic tensile responses of both sample-sets are compared using the velocity profile measured on the free-end of the sample.
Furthermore, an anisotropic damage model based on the concept of obscuration probability describes the response without preexisting cracks.
Here, a term of cohesive strength in obscuration zones is added to accurately handle the softening behavior of the material in tension.
Results from the spalling tests are used to validate the model prediction of the dynamic tensile strength and also to calibrate the cohesive model parameters.
Damaged elements are numerically introduced in the finite element calculations simulating the spalling experiments performed on predamaged samples.
The results are compared with the experimental ones.
Good agreement is obtained showing that a two-scale approach may constitute a suitable method to simulate numerically the tensile response of predamaged granite.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Saadati, Mahdi& Forquin, Pascal& Weddfelt, Kenneth& Larsson, Per-Lennart. 2016. On the Tensile Strength of Granite at High Strain Rates considering the Influence from Preexisting Cracks. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1096269
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Saadati, Mahdi…[et al.]. On the Tensile Strength of Granite at High Strain Rates considering the Influence from Preexisting Cracks. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1096269
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Saadati, Mahdi& Forquin, Pascal& Weddfelt, Kenneth& Larsson, Per-Lennart. On the Tensile Strength of Granite at High Strain Rates considering the Influence from Preexisting Cracks. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1096269
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1096269
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر