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Haibo Wang, Wenqing Xu, Bing Cheng and Qi Zong
To study the particle size distribution and energy variation law of hard coal under a load, an impact compression test of hard coal specimens under different impact loading conditions was carried out using a F50 mm diameter Separate Hopkinson Press Bar (...
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Christian Dieling, Milton Smith and Mario Beruvides
The terminal velocity of hailstones is an essential quantity in hail research. It is an important value for the kinetic energy of hailstones and has to be carefully considered when laboratory hail impact testing is being planned. Many standardized hail i...
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Gulab Singh, Tong Deng, Michael S. A. Bradley and Richard Ellis
Particle degradation of biomass materials can be a severe issue in transportation and material handling because of dust generated. Especially for pneumatic conveying systems, assessment of material degradation in such a large process can be challenging.
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Qikai Zhuang, Peijie Yue, Kai Li, Xin Guo and Xiaoquan Cheng
Coal-based carbon foam (CCF) has been widely used in the hypersonic vehicles? thermal protection system (TPS) due to its good thermal insulation and mechanical properties. In addition, CCF can absorb large quantities of energy when crushed so that the CC...
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Alessandro Polla, Giacomo Frulla, Enrico Cestino, Raj Das and Pier Marzocca
The presented methodology offers the author?s view on how to bridge the gap between the numerical evaluation and physical response of a typical composite panel under high-velocity impact. A rational approach to failure conditions and progressive damage p...
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Shuai Ma, Zhongyuan Wang, Xugang Wang and Qi Chen
The problem of three-dimensional impact time control guidance considering field-of-view constraints and time-varying velocity is investigated in this study. First, considering the effect of gravity and aerodynamic forces on velocity, a simplified numeric...
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Shahab Khakpour, Petri Tanska, Amir Esrafilian, Mika E. Mononen, Simo Saarakkala, Rami K. Korhonen and Timo Jämsä
The results of this study can be used in designing prevention strategies for low-energy acetabular fractures. Also, it could help to cut the huge associated costs imposed on the health sector annually for managing acetabular fractures among the elderly p...
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Yangyu Lu, Qingming Zhang, Yijiang Xue, Wenjin Liu and Renrong Long
Three types of multi-wall shielding were experimentally investigated for their performances under the high-velocity impact of a cm-size cylindrical projectile by using a two-stage light-gas gun. The three shields contained the same two aluminum bumpers b...
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Noureddine Djebbar, Boualem Serier, Smail Benbarek, Benali Boutabout
Pág. 249 - 256
The finite element method is used to solve mechanical and physical problems in engineering analysis and design. Primary stability has been regarded as a prerequisite for osseointegration of dental implants. Biomechanical factors play a key role in the su...
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Richard A. Hazelwood, Patrick C. Macey, Stephen P. Robinson and Lian S. Wang
Seismic interface waves generated by seabed impacts are believed to have biological importance. Previous work on the effects of ocean piling and dredging studied water motion adjacent to the seabed, using sediment measurements as reviewed in the literatu...
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Richard A. Hazelwood, Patrick C. Macey, Stephen P. Robinson and Lian S. Wang
Seismic interface waves generated by seabed impacts are believed to have biological importance. Previous work on the effects of ocean piling and dredging studied water motion adjacent to the seabed, using sediment measurements as reviewed in the literatu...
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Hongjian Zhang, Mingming Wang, Weidong Wen, Ying Xu, Haitao Cui and Jinbo Chen
The failure and residual strength after low-velocity impact of stitched composites are very important in their service and maintenance phases. In order to capture the failure and residual strength more accurately, a full-process numerical analyzing metho...
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Richard A. Hazelwood and Patrick C. Macey
Seismic interface waves generated by seabed impacts are believed to have biological importance. Various wave types are of interest to seismologists, who can minimize the unwanted, but often dominant, ground roll waves with suitable instrumentation. Waves...
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Amine Smahat, Abdelkader Megueni
Pág. 113 - 120
This paper analyzes the behavior of a functionnally graded plate subjected to impact force at a low velocity by adopting the Hertz law. The differential equation which governs the impact phenomenon is used to calculate the contact force, indentation and ...
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Liangang Xiao, Yaxian Hu, Philip Greenwood and Nikolaus J. Kuhn
The use of sediment settling velocity based on mineral grain size distribution in erosion models ignores the effects of aggregation on settling velocity. The alternative approach, wet-sieved aggregate size distribution, on the other hand, cannot represen...
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Zhanyuan Jiang, Jianquan Ge, Qiangqiang Xu and Tao Yang
The paper proposes a two-dimensional impact time control cooperative guidance law under constant velocity and a three-dimensional impact time control cooperative guidance law under time-varying velocity, which can both improve the penetration ability and...
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Rupali Sarmah, Troyee Tanu Dutta and K. Seshagiri Rao
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Jaan H. Pu
The failure of swirling ship propellers in marine environments can lead to huge repair costs. One of the main causes of such failure is when propellers tangle with vegetation, especially in shallow flow environments like ports, harbours, or shipyards. In...
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Muhammad Yousaf and Chuwei Zhou
Indentation is an effective indication of LVI damage in PMCs. However, indentation can rebound partly with time. Thus, a good understanding of the rebound behavior of the impacted pit is helpful in damage assessment for composites. In this paper, a trans...
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Yogeshwar Jasra,Ravindra K. Saxena
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