Computational modelHelmet impact testingHybrid-IIIMaterial propertiesThe objective of this study was to develop and validate a set of Hybrid-III head and neck (HIII-HN) and impactor models that can be used to assess American football design modifications with established dummy-based injury metrics. ...
III. Featuresof Impactor 1. Cubic shaped end products; 2. Adjustable end products sizes, simple crushing process; 3. High chrome and abrasion resistant blow bar, powerful impacting force; 4. Non-key connected, easy maintenance, economical and reliable; ...
A forward model using these assumptions produces the observed 50 nT magnetic field anomaly at 20 km altitude with an ancient magnetizing field of ~500 μT (Methods subsection The strongest magnetic anomalies at the Crisium antipode, Supplementary Fig. 1), which is ~10 times the Earth’s...
Model evolution spans 13.1 h after the giant impact, and the entropy unit is MJ K−1 kg−1. Supplementary Video 2 A canonical giant-impact simulation using the SPH method, highlighting the preservation of a mostly solid lower layer in Earth’s mantle after the impact event. ...
Based on the theory of Newton’s second law and the contact model between particles, the DEM can be applied to the particle dynamics and kinematics analysis by calculating the displacement and force of each particle in the granular system based on the explicit time step iteration. Both 2D [10...
Travel speed (F) I: 0 - 8.4km/h, II: 0 - 15.2km/h, III: 0 - 29km/h Travel speed (R) I: 0 - 10km/h Tire size 23.5-25-16PR Specification of Impact Compactor Model SWIC320 Impact power 32KJ Travelling speed 10 - 15km/h Operating weig...
Model NO. SWD32 Type Road Roller Working Method Steel Wheel Axle Triaxial Three-Wheel Grinding Wheel Type Sheep Foot Roller Compaction Depth 40cm Engine Type Diesel Engine Travel Speed 35cm/s Centrifugal Force 40KN Certification CS, CE, RoHS, ISO 9001:2000, ISO 900...
Plass-Duelmer, C., Facchini, M.A., Laaksonen, A.: Meteorological and trace gas factors affecting the number concentration of atmospheric Aitken (Dp = 50 nm) particles in the continental boundary layer: parameterization using a multivariate mixed effects model. Geosci. Model Dev.4, 1–13...
The probe used here is an adaptation of a model analyzed by Colkett, III, et al. (1982) to the study of aerosols and vapors in high temperature gases (Jime´nez and Ballester 2004). As shown in Figure 2, a low pressure cyclone located immediately downstream of the probe collects ...
Total dry deposition velocities were calculated from the two-layer deposition model of Slinn and Slinn (1980) using three approaches: (i) by characterizing the distribution as a MMD, (ii) by considering the size distribution as directly given by the cascade impactor, (iii) by fitting the ...