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Showing 1 to 10 of 10 for “"impact simulation"”.
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Impact Simulation and Analysis of Sandwich Structures
<p>Impact damage on aircraft and spacecraft can be a severe problem that may cause catastrophic results. Several aerospace structures have been used to resist or absorb energy in the occasion of impact. Among these, a sandwich structure has advantages with high stiffness, strength to weight ratio, …
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Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator
… altitude of at least 5000 ft (1524 m). Detailed simulations of the impact reveal shock loads up to 566 G from a drop velocity of 42.5 m/s. Finally, the effects of steady wind are analyzed, and point to a maximum recommended wind speed of 7.5 m/s for drop operations.
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Towards a More Complete Understanding of Adverse Impact: Examining Issues of Minority Availability
Selection research often examines whether adverse impact can be reduced/eliminated from employment practices. Such research, however, largely ignores the influence of minority availability issues (i.e., the number of minorities who apply and the number of minorities who accept a job offer); three …
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Dynamic Analysis of CubeSat Impact on Lunar Surface
… Unlike other CubeSats, EagleCam is designed to impact the lunar surface and there is no history to build off of. Specifically, EagleCam will need to survive a 30 m drop onto the lunar surface with all internal components fully operational post impact. This thesis is focused on the analytical, …
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Impact Resistance of Hybrid Metal-Organic Frameworks/Carbon Fibers Composites
… In this study, the energy absorption due to impact at low speed will be tested and simulated in four configurations of CFRPs utilizing the same [0/90]<sub>S</sub> layout throughout them.</p> <p>The carbon fiber configurations used during this study are de-sized, acid-activated, metal-organic …
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A Prediction of the Acoustical Output of a Golf Driver Head Using Finite Elements
A simulation was created using LS-DYNA® to determine the acoustical properties of a golf ball and golf driver head impact. LS-DYNA® has a coupled finite element analysis (FEA) and boundary element method (BEM) solver that uses the integral form of Helmholtz’s acoustic wave equation to deliver …
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Development and Validation of a Child Finite Element Model for Use in Pedestrian Accident Simulations
… However, with exception of a child headform impact test, all other subsystem tests are designed for prediction of adult pedestrian injuries. Due to differences in impact location and material properties, existing subsystem tests and dummies designed for adult pedestrian cannot be used for …
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Detection of in-plane stress waves with Polyvinylidene Fluoride (PVDF) sensors
… of PVDF sensing related to determination of impact force, detection of stress wave propagation, and the stress averaging effect of PVDF sensors.</p><p>An experimental method was developed for calculating a proportionality constant between a PVDF sensor's voltage and the impact force, on a …
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Mass wasting and the Coriolis effect on asteroid Vesta
… force on mass motion related to the Rheasilvia impact basin on asteroid (4) Vesta's southern hemisphere. The giant basin is 500km in diameter, with a centre which nearly coincides with the rotation axis of Vesta. The Rheasilvia basin partially overlaps an earlier, similarly large impact basin, …
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Simulation, Design and Implementation of Antenna for 5G and beyond Wave Communication. Simulation, Design, and Measurement of New and Compact Antennas for 5G and beyond and Investigation of Their Fundamental Characteristics
The fifth generation (5G) has developed a lot of interest, and there have been many reported initiatives in both industry and academics. Multiple-input-multiple-output (MIMO) is the most promising wireless access technique for next-generation networks in terms of spectral and energy efficiency …