Impact Dynamic Properties and Energy Evolution of Damaged Sandstone Based on Cyclic Loading Threshold
المؤلفون المشاركون
Zheng, Qiangqiang
Zong, Qi
Yuan, Anying
Hu, Hao
Li, Mengyao
Wang, Haibo
Wang, Mengxiang
Zhang, Shouyang
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-11-29
دولة النشر
مصر
عدد الصفحات
12
التخصصات الرئيسية
الملخص EN
Rocks in deep coal mines are usually in varying degrees of damage state before they are destabilized by impact loads such as rock bursts.
For the problem of the mechanical properties and energy evolution of damaged rocks under impact loads, the authors use static loads with different cyclic load thresholds to act on sandstone specimens to make them in distinct degrees of damage.
Then, the rock mechanics system (MTS-816) and the Split Hopkinson pressure bar (SHPB) are employed to perform uniaxial compression and impact dynamics tests on sandstones with different degrees of damage.
The results show that, from the perspective of mechanical properties, the uniaxial compressive strength and dynamic compressive strength of the damaged sandstone gradually decrease with the increase of the upper limit of the cycle threshold and both obey the growth law of the quadratic function, and the dynamic strength increase factor (DIF) also decreases with the increase of the cyclic load threshold.
In terms of energy, with the increment of the cyclic load threshold, the number of cracks in the damaged sandstone is large and the scale is enormous.
Due to the effect of cracks, when the incident energy is a fixed value, the transmission energy decreases with the increase of the damage degree and the change law of the reflection energy is the opposite.
The systematic study of the dynamic mechanical properties and energy evolution law of the damaged sandstone provides some reference for the prevention and mechanism research of rock bursts.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zheng, Qiangqiang& Hu, Hao& Yuan, Anying& Li, Mengyao& Wang, Haibo& Wang, Mengxiang…[et al.]. 2020. Impact Dynamic Properties and Energy Evolution of Damaged Sandstone Based on Cyclic Loading Threshold. Shock and Vibration،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1210162
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Zheng, Qiangqiang…[et al.]. Impact Dynamic Properties and Energy Evolution of Damaged Sandstone Based on Cyclic Loading Threshold. Shock and Vibration No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1210162
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zheng, Qiangqiang& Hu, Hao& Yuan, Anying& Li, Mengyao& Wang, Haibo& Wang, Mengxiang…[et al.]. Impact Dynamic Properties and Energy Evolution of Damaged Sandstone Based on Cyclic Loading Threshold. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1210162
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1210162
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