Shock wave impact simulation of a vehicle occupant using fluid/structure/dynamics interactions

Yang, Yang; Liou, William W.; Sheng, James J.; Gorsich, David; Arepally, Sudhakar

doi:10.1016/j.ijimpeng.2012.09.002

Cited by 12 publications

(6 citation statements)

References 13 publications

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“…Analysis shows that the lumped parameter model is able to predict the FSI effects accurately upto the occurrence of first cavitation. The shock wave impact on vehicle occupants was examined by yang 60 , et. al.…”

Section: Numerical Modellingmentioning

confidence: 99%

Blast Valve Design and Related Studies : A Review

2016

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The protective structures required for performing critical operations are vulnerable to the blast and shock loads of advanced weapons. A blast valve is an important component of such structures for ventilation during normal conditions and for protection from blast/ shock during explosion. In this paper, various aspects of blast valve design and related studies are briefly reviewed. The concept and effects of blast wave, blast impact, numerical modelling and deformation of circular plate (one of the critical components of blast valve) have been discussed. The merits and demerits of sensing mechanisms viz. remote and direct sensing are discussed. The leakage of blast pressure during finite closing period of the valve (one of the critical problems) and the shock tube as a major experimental facility for testing of blast valves are briefly discussed.Keywords: Blast valve, wave, leakage, closure mechanism, shock tube Figure 1. Schematic of blast closure valve.

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Section: Numerical Modellingmentioning

confidence: 99%

Blast Valve Design and Related Studies : A Review

2016

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“…As explained previously by Rao (2004), forced external excitation from engine's imbalance cycle and uneven road condition could lead to failure. Further studies conducted by Ferreira and Lopez-Pita (2012) and analysed by (Gou- Lin and Dai-Sheng, 2008;Yang et al, 2012) in which they conclude that if excitation signal frequency and the response frequency of the skin structure is similar, the mechanical structure will produce resonance and deflection. Naveen and Venkatesh (2014) presented from the mode shape generated from two wheeler chassis derived from Operation Deflection Shape (ODS) analysis produced six experimental mode shape, includes torsion, lateral bending and vertical bending in different modes.…”

Section: Fig 1 An Example Of Space Frame Chassis Structurementioning

confidence: 99%

Determination of Natural Frequencies through Modal and Harmonic Analysis of Space Frame Race Car Chassis Based on ANSYS

Marzuki¹,

Halim²,

Mohamed³

2015

American Journal of Engineering and Applied Sciences

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Space frame chassis the preferred choice of chassis design due to its low cost, high strength, lightweight and safe qualities, which made it suitable for a single-seat race car application and an important aspect in the construction of the space frame race car chassis. Key sections of a space frame race car chassis consist of front and main hoops, side impact protection and crush zone sub-frame. These sections are pivotal in the safety aspect of the driver during emergency situation. This research introduces several methods of dynamic analysis to investigate the mode shape and natural frequencies in the chassis structure. Two methods are mainly used in the study, modal analysis and harmonic analysis with both analyses are performed using Finite Element (FE) method through Finite Element Analysis (FEA) software packaged, ANSYS v13 APDL Mechanical. The study identified five mode shapes extracted using Block Lanczos method, all mode shapes vibrated at a frequency above 150 Hz with the characteristic of each mode shapes is further explained in this study. Amplitude vs. frequency graph is generated from harmonic analysis is utilised to determine the resonance frequency. The highest amplitude occurred in the third natural frequency with an amplitude of 0.375 mm. The outcome of this analysis can be used as a reference in improving the chassis design and performance against dynamic behaviour of the structure by introducing stiffener on part of the chassis imposed with the highest displacement.

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“…propagation, gas property changes, etc. ), structural responses, caused by the impact of blast waves, are subject of several studies (Spranghers et al, 2013;Børvik et al, 2009;Henchie et al, 2014;Nguyen and Gatzhammer, 2015;Louar et al, 2015;Yang et al, 2013). Typically, experimental or numerical investigations are carried out, where for the latter finite element method (FEM) analyses or fluid structure interaction (FSI) simulations find application.…”

Section: Introductionmentioning

confidence: 99%

Analysis of pressure drop and blast pressure leakage of passive air blast safety valves: An experimental and numerical study

Brenner

Jenni

Guyer

et al. 2022

Journal of Loss Prevention in the Process Industries

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The purpose of passive air blast safety valves is to protect people and technical installations in buildings or facilities. In case of explosions, e.g. due to technical failures in an oil-and gas refinery, the safety valve should close in milliseconds with the incident shock wave and substantially reduce the blast-pressure leakage into the building. On the other hand, the safety valve should exhibit a low pressure drop in normal operation in order to reduce the power consumption of the ventilators. One main difficulty in the design of such safety valves is to meet the minimum technical requirements, while ensuring the functionality in intrinsically different operating modes. Therefore, the present study proposes a target-oriented evaluation and optimization procedure for such devices, incorporating comprehensive numerical and experimental investigations. CFD, FEM and FSI analyses are regarded as an appropriate approach to predict valve performance parameters and to gain additional insights into the flow or structural behavior of the safety valve, which serves then as a basis for geometrical optimizations. The introduced procedure is exemplified on an existing passive air blast safety valve as a case study. The performance of the new design is significantly increased in ventilation operation, while meeting the performance criteria in the stress case when subjected to blast loads.

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Shock wave impact simulation of a vehicle occupant using fluid/structure/dynamics interactions

Cited by 12 publications

References 13 publications

Blast Valve Design and Related Studies : A Review

Blast Valve Design and Related Studies : A Review

Determination of Natural Frequencies through Modal and Harmonic Analysis of Space Frame Race Car Chassis Based on ANSYS

Analysis of pressure drop and blast pressure leakage of passive air blast safety valves: An experimental and numerical study

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