one of the most important structural components of engine compartment assembly in a car body is the srail. s-rails has significant role in absorbing energy during crash events and therefore it is designed for efficient behavior in such conditions. driving the peak crushing force of the s-rails is one of the important objectives in the design process of such structures. peak crushing force is ex...

In the last two years we have seen seventy-five cases of pelvic girdle injuries with soft-tissue complications in patients admitted to the hospitals serving the African population of Johannesburg and its environs. These injuries had been caused by motor vehicle accidents, railway accidents, falls from heights, and assaults. Twenty of the patients died from their injuries, eight of them within f...

Clarifying the maize kernel movement during crushing process is critical for improving design and optimization of impact mill. Rather than through experiments, can be quantitatively analyzed discrete element method (DEM), this could contribute more to study mechanism equipment optimization. However, having an accurate particle model contact parameters are prerequisites ensure accuracy DEM simul...

Coal particle size and the degree of compaction significantly affect goaf heritage ventilated environment process spontaneous combustion coal, distribution are also affected by load application process, stress in is not uniform, resulting mined-out coal. It necessary to carry out experimental studies on coal crushing granularity under different loads loading processes clarify its law. Therefore...

To study the particle size distribution and energy variation law of hard coal under a load, an impact compression test specimens different loading conditions was carried out using Φ50 mm diameter Separate Hopkinson Press Bar (SHPB) system. We implemented theory dynamic rock to establish calculation expression crushing dissipation, we established Weibull model body analyze velocity in relation c...

This paper studies the milling process of SiCp/Al2024 composite with high volume fraction and large particle size. The mechanism is analyzed. influence cutting depth feed per tooth on surface quality It reveals subsurface damage workpiece. results show that in composite, because edge radius much larger than radius, main form removal crushing. defects workpiece mainly include pits, cracks, scrat...

Fluidized bed is commonly used for struvite (MgNH4PO4·6H2O) recovery from wastewater. However, effective methods are lacking to describe the properties of the millimeter-scale struvite pellets in the fluidized bed, with the consequence of not predicting and optimizing the granulation process effectively. In this work, swine wastewater was used as the medium for struvite recovery by using fluidi...

An accurate determination of particle-level fabric of granular soils from tomography data requires a maximum correct separation of particles. The popular marker-controlled watershed separation method is widely used to separate particles. However, the watershed method alone is not capable of producing the maximum separation of particles when subjected to boundary stresses leading to crushing of ...

Aluminum-based metal matrix composite (MMC) materials are used in the design of ground transportation vehicles and aircraft. Compared with conventional, unreinforced alloys, composite materials usually exhibit higher strength, both at ambient and elevated temperatures, as well as good fatigue strength and wear resistance. MMCs could be produced by variety of methods such as Stir cast, Liquid In...

Sintering is a method that makes powdered materials (such as fine ore or preparation concentrate) into block mass under conditions involving incomplete fusion by heating to high temperature. Its production is sinter which is irregular and porous (FU et al., 1996). The following parts are usually included in sintering process: acceptance and storage of iron-containing raw materials, fuel and flu...