The formula of reinforcement coefficient of effective height was derived considering geological condition and dynamic compaction parameters. 给出了考虑地质条件和各种强夯参数的有效深度加固系数的计算公式。 参考来源旧路基拓宽改建沉降开裂机理及强夯工艺研究 土木建筑工程 动力-引用次数:3327 Furthermore,the robus...
This article based on the study of the displacement tendency of the rock masses on or under fractured face of the key layer, deduces the vertical stress calculation formula of the rock mass under the fractured face which indicates that the vertical stress is correlative with the length of ...
Based on the empirical formula, the dynamic load of downhole perforation has been analyzed [8]. It is concluded that the dynamic pressure from perforation will increase the damage risk of downhole equipment of deep-water wells [9]. The perforation process is simulated by using the finite ...
Theononobe-Okabeethod is widelysed in practiceo estimate dynamicctive earth pressure.heethod, derivedromoulomb'sheory,annotccountorhe effectfohesionndencea... WC Kim,D Park,B Kim - 《Geotechnique》 被引量: 24发表: 2010年 Population synthesis of planet formation using a torque formula with ...
Dynamic explicit analysis is performed in the finite element (FE) software ABAQUS to simulate various waveforms in the split Hopkinson pressure bar (SHPB) experiments by applying different stress waves in the incident bar. The FE simulation accuracy is validated against SHPB experimental results from ...
Consequently, the dynamic compressive tests on D1 railway wheel steel were conducted over a wide range of strain rates up to 2.4× 103 s−1and temperature between – 60 °C (213 K) and 700 °C (973 K), using a split Hopkinson pressure bar (SHPB) apparatus in the present study. Thr...
This is well demonstrated in the studies on understanding the growth mechanisms of high sp3 content in tetrahedral amorphous carbon3,35, the pressure-induced phase transition in silicon36, and complex aqueous systems37. Despite these significant achievements in data-driven MD simulations, the ...
Since 2018, the EU commission has declared the Danish broiler industry to be Salmonella free. However, there is continuous Salmonella pressure from the environment, and a number of parent flocks and broiler flocks become infected annually. When a parent
In Section 3, the scenario of compression split Hopkinson pressure bar (SHPB) test is modelled using the K&C concrete damage model in LS-DYNA to examine whether the compression strain rate effects of the concrete are a dynamic structural effect or a material property with a local material ...
while the dynamic strength and total energy consumption decreased. Wang et al.41utilized a homemade experimental device to test the strength and failure type of coal specimens under the coupled conditions of static axial preloading, impact loading, and water pressure, and found that water could inc...