Computer Simulation of Wheel Impact Test

1986 ◽  
Author(s):  
M. Riesner ◽  
M. P. Zebrowski ◽  
R. J. Gavalier
Keyword(s):  
Computer Simulation ◽  
Impact Test

Inclined Impact Test and Computer Simulation of Front Rail

2014 ◽  
Author(s):  
Yuanyuan Zhang ◽  
Shen Wu ◽  
Yuliang Shi ◽  
Jingang Tu ◽  
Jingguo Hu
Keyword(s):  
Computer Simulation ◽  
Impact Test ◽  
Inclined Impact Test

Computer Simulation of a Transportation Package Impacting Concrete and Soil Targets

2004 ◽  
Author(s):  
S. N. Huang ◽  
S. S. Shiraga ◽  
L. M. Hay
Keyword(s):  
Numerical Simulation ◽  
Computer Simulation ◽  
Impact Test ◽  
Impact Behavior ◽  
Test Results ◽  
Hypothetical Accident ◽  
Simulation Results ◽  
Accident Conditions ◽  
The Impact

This paper compares transportation mockup cask impact test results onto real surfaces with FEA numerical simulation results. The impact test results are from a series of cask impact tests that were conducted by Sandia National Laboratories (Gonzales 1987). The Sandia tests were conducted with a half-scale instrumented cask mockup impacting an essentially unyielding surface, in-situ soil, concrete runways, and concrete highways. The cask numerical simulations with these same surfaces are conducted with ABAQUS/Explicit, Version 5.8, The results are then compared and evaluated to access the viability of using numerical simulation to predict the impact behavior of transportation casks under hypothetical accident conditions.

Correlation Analysis of Computer Simulation with Full-Scale Impact Test for Barrier Safety Evaluation

2011 ◽  
Vol 94-96 ◽  
pp. 2092-2101
Author(s):  
Xin Peng Shao ◽  
Hui Ji ◽  
Shu Ming Yan ◽  
Qi Qian Li ◽  
Ning Jia ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Performance Evaluation ◽  
Impact Test ◽  
Safety Evaluation ◽  
Simulation Models ◽  
Simulation Method ◽  
Full Scale ◽  
Safety Performance ◽  
Computer Simulation Method ◽  
Set Up

In order to analyze the feasibility of barrier safety performance evaluation with computer simulation method, finite-element models of various vehicles and barriers were set up and simulations results are compared to multiple full-scale impact test data. The results indicate that all safety performance index such as vehicle trajectory, structural adequacy, occupant risk and dynamic deformation can be extracted from computer simulation and FEA results are coincident with those of tests with error less than 10%. Computer simulation method is proved to be highly feasible for safety performance evaluation of barriers. The concept that simulation models must be verified through tests is stressed and the suggestion that laws and regulations on professional audit and management of CAE engineers should be completed is brought out.

The Development of New Steel Backing Wood Landscape Guardrail

2014 ◽  
Vol 983 ◽  
pp. 312-318
Author(s):  
Zhi Wei Zhou ◽  
Cheng Hu Wang ◽  
Meng Li
Keyword(s):  
Computer Simulation ◽  
Impact Test ◽  
Full Scale ◽  
Environment Friendly ◽  
Protection Level ◽  
Economical Efficiency ◽  
Real Vehicle

Steel-wood combination guardrail is a kind of environment-friendly and harmonious highway ancillary structure. It can provide comfortable and superior experience for highway users. At present, there is no steel-wood combination guardrail qualified for 160kj protection level of highway barriers in China. The Development of New Steel Backing Wood Landscape Guardrail takes reliability, economical efficiency, convenience of construction into account. The researchers optimize structure by computer simulation. This guardrail eventually passed the full-scale impact test with real vehicle. The test proves that it can become a model applied on the actual scenic highway.

scholarly journals Computer Simulation of Izod Impact Test for Impact Modifier Reinforced Nylon6

2013 ◽  
Vol 48 (2) ◽  
pp. 172-179 ◽  
Author(s):  
Yohan Park ◽  
Min-Young Lyu ◽  
D.R. Paul
Keyword(s):  
Computer Simulation ◽  
Impact Test ◽  
Izod Impact ◽  
Impact Modifier

Characterization of Modulated Structure Through Structure Images and their Computer Simulation

1990 ◽  
Vol 48 (1) ◽  
pp. 70-71
Author(s):  
Kiyomichi Nakai ◽  
Yusuke Isobe ◽  
Chiken Kinoshita ◽  
Kazutoshi Shinohara
Keyword(s):  
Computer Simulation ◽  
High Resolution ◽  
Spherical Aberration ◽  
High Resolution Electron Microscopy ◽  
Basic Mechanism ◽  
Objective Lens ◽  
Specimen Thickness ◽  
Transmitted Beam ◽  
Modulated Structure ◽  
Resolution Electron

Induced spinodal decomposition under electron irradiation in a Ni-Au alloy has been investigated with respect to its basic mechanism and confirmed to be caused by the relaxation of coherent strain associated with modulated structure. Modulation of white-dots on structure images of modulated structure due to high-resolution electron microscopy is reduced with irradiation. In this paper the atom arrangement of the modulated structure is confirmed with computer simulation on the structure images, and the relaxation of the coherent strain is concluded to be due to the reduction of phase-modulation.Structure images of three-dimensional modulated structure along <100> were taken with the JEM-4000EX high-resolution electron microscope at the HVEM Laboratory, Kyushu University. The transmitted beam and four 200 reflections with their satellites from the modulated structure in an fee Ni-30.0at%Au alloy under illumination of 400keV electrons were used for the structure images under a condition of the spherical aberration constant of the objective lens, Cs = 1mm, the divergence of the beam, α = 3 × 10-4 rad, underfocus, Δf ≃ -50nm and specimen thickness, t ≃ 15nm. The CIHRTEM code was used for the simulation of the structure image.

Averting robo-bees: why free-flying robotic bees are a bad idea

2019 ◽  
Vol 3 (6) ◽  
pp. 723-729
Author(s):  
Roslyn Gleadow ◽  
Jim Hanan ◽  
Alan Dorin
Keyword(s):  
Climate Change ◽  
Computer Simulation ◽  
Food Security ◽  
European Countries ◽  
Plant Interactions ◽  
Plant Insect Interactions ◽  
Native Habitat ◽  
Insect Pollinators ◽  
Insect Interactions

Food security and the sustainability of native ecosystems depends on plant-insect interactions in countless ways. Recently reported rapid and immense declines in insect numbers due to climate change, the use of pesticides and herbicides, the introduction of agricultural monocultures, and the destruction of insect native habitat, are all potential contributors to this grave situation. Some researchers are working towards a future where natural insect pollinators might be replaced with free-flying robotic bees, an ecologically problematic proposal. We argue instead that creating environments that are friendly to bees and exploring the use of other species for pollination and bio-control, particularly in non-European countries, are more ecologically sound approaches. The computer simulation of insect-plant interactions is a far more measured application of technology that may assist in managing, or averting, ‘Insect Armageddon' from both practical and ethical viewpoints.

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