Effect of Pre-Existing Symmetrical Cracks on Propagation Behaviors of a Blast-Induced Crack
المؤلفون المشاركون
Zhou, Changlin
Wang, Meng
Wan, Duanying
Zhu, Zheming
Li, Jianfei
Ying, Peng
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-16، 16ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-08-07
دولة النشر
مصر
عدد الصفحات
16
التخصصات الرئيسية
الملخص EN
Defects such as voids, pores, and joints will transform into big scale cracks in the rock of tunnel surrounding under dynamic load like blasting and earthquake.
In this paper, three kinds of symmetrical cracks were chosen as an example, and experiments and numerical simulations were conducted to study the effect of symmetric cracks on a blast-induced crack.
The relationship of main crack propagation characteristic and distribution of symmetrical cracks was investigated.
Some circular specimens using two kinds of material, PMMA and sandstone, including a center hole charged with a detonator and pre-existing cracks were used in the experiments.
The test system consisted of an oscilloscope and an ultradynamic strain amplifier and crack propagation gauges (CPGs) were employed in monitoring propagation velocity.
AUTODYN code was applied in numerical simulation to investigate the propagation behavior of main crack between symmetrical cracks.
Linear equation of state and a modified major principal stress failure criterion was utilized to describe the status of rock material.
Based on experimental and numerical results, it can be concluded that (1) the pre-existing symmetrical cracks have arrest effect on main crack propagation, (2) compressive stress in y-direction plays very important roles in crack arrest, and (3) the spacing of parallel cracks has a great influence on crack propagation length and velocity.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Wan, Duanying& Zhu, Zheming& Zhou, Changlin& Li, Jianfei& Ying, Peng& Wang, Meng. 2020. Effect of Pre-Existing Symmetrical Cracks on Propagation Behaviors of a Blast-Induced Crack. Shock and Vibration،Vol. 2020, no. 2020, pp.1-16.
https://search.emarefa.net/detail/BIM-1210058
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Wan, Duanying…[et al.]. Effect of Pre-Existing Symmetrical Cracks on Propagation Behaviors of a Blast-Induced Crack. Shock and Vibration No. 2020 (2020), pp.1-16.
https://search.emarefa.net/detail/BIM-1210058
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Wan, Duanying& Zhu, Zheming& Zhou, Changlin& Li, Jianfei& Ying, Peng& Wang, Meng. Effect of Pre-Existing Symmetrical Cracks on Propagation Behaviors of a Blast-Induced Crack. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-16.
https://search.emarefa.net/detail/BIM-1210058
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1210058
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