scholarly journals Lightweight design and crash analysis of composite frontal impact energy absorbing structures

2012 ◽  
Vol 94 (2) ◽  
pp. 423-430 ◽  
Author(s):  
Jovan Obradovic ◽  
Simonetta Boria ◽  
Giovanni Belingardi
Keyword(s):  
Impact Energy ◽  
Lightweight Design ◽  
Crash Analysis ◽  
Frontal Impact ◽  
Energy Absorbing

Dynamic Energy Absorption Performances of Rain Forest Vehicle (RFV) under Frontal Impact

2014 ◽  
Vol 67 (3) ◽  
Author(s):  
M. S. Othman ◽  
Z. Ahmad
Keyword(s):  
Energy Absorption ◽  
Impact Energy ◽  
Impact Loading ◽  
Rain Forest ◽  
Experimental Testing ◽  
Rigid Wall ◽  
Crash Analysis ◽  
Frontal Impact ◽  
Frontal Section ◽  
The Impact

This paper treats the crash analysis and energy absorption response of Rain Forest Vehicle (RFV) subjected to frontal impact scenario namely impacting rigid wall and column. Dynamic computer simulation techniques validated by experimental testing are used to carry out a crash analysis of such vehicle. The study aims at quantifying the energy absorption capability of frontal section of RFV under impact loading, for variations in the load transfer paths and geometry of the crashworthy components. It is evident that the proposed design of the RFV frontal section are desirable as primary impact energy mitigation due to its ability to withstand and absorb impact loads effectively. Furthermore, it is found that the impact energy transmitted to the survival room may feasibly be minimized in these two impact events. The primary outcome of this study is design recommendation for enhancing the level of safety of the off-road vehicle where impact loading is expected.   

Dynamic Energy Absorption Performances of Rain Forest Vehicle (RFV) under Frontal Impact

2014 ◽  
Vol 69 (3) ◽  
Author(s):  
M. S. Othman ◽  
Z. Ahmad
Keyword(s):  
Energy Absorption ◽  
Impact Energy ◽  
Impact Loading ◽  
Rain Forest ◽  
Experimental Testing ◽  
Rigid Wall ◽  
Crash Analysis ◽  
Frontal Impact ◽  
Frontal Section ◽  
The Impact

This paper treats the crash analysis and energy absorption response of Rain Forest Vehicle (RFV) subjected to frontal impact scenario namely impacting rigid wall and column. Dynamic computer simulation techniques validated by experimental testing are used to carry out a crash analysis of such vehicle. The study aims at quantifying the energy absorption capability of frontal section of RFV under impact loading, for variations in the load transfer paths and geometry of the crashworthy components. It is evident that the proposed design of the RFV frontal section are desirable as primary impact energy mitigation due to its ability to withstand and absorb impact loads effectively. Furthermore, it is found that the impact energy transmitted to the survival room may feasibly be minimized in these two impact events. The primary outcome of this study is design recommendation for enhancing the level of safety of the off-road vehicle where impact loading is expected.   

Crush and crash analysis of an automotive battery-pack enclosure for lightweight design

2020 ◽  
pp. 1-10
Author(s):  
Yongjun Pan ◽  
Yue Xiong ◽  
Wei Dai ◽  
Keshan Diao ◽  
Lei Wu ◽  
...  
Keyword(s):  
Lightweight Design ◽  
Battery Pack ◽  
Crash Analysis

Modeling and analysis of impact energy absorber by using ls dyna

2015 ◽  
Vol 12 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Adik Yadao ◽  
R. S. Hingole
Keyword(s):  
Impact Energy ◽  
Material Properties ◽  
Research Work ◽  
Cad Model ◽  
Post Processing ◽  
Passenger Compartment ◽  
Efficient Manner ◽  
Energy Absorber ◽  
Modeling And Analysis ◽  
Energy Absorbing

Today’s car is one of the most important things in everyone’s life .Every person wants to have his or her own car but the question that arises in each buyer’s mind is whether the vehicle is safe enough to spend so much of money so it is the responsibility of an mechanical engineer to make the vehical comfortable and at the Same time safer. Now a days automakers are coming with various energy absorbing devices such as crush box, door beams etc. this energy absorbing device s prove to be very useful in reducing the amount force that is being transmitted to the occupant. In this we are using impact energy absorber in efficient manner as compare to earlier. The various steps involved in this project starting from developing the cad model of this inner impact energy absorber using the CAD software CATIA V5 R19. Then pre-processing is carried out in HYPERMESH 11.0 which includes assigning material, properties, boundary conditions such as contacts, constraints etc. LS-DYNA971 is used as a solver and LS-POST is used for the post processing and results obtained are compared to the standards. By carrying out this idea it has been observed that there is a considerable amount of energy that is being absorbed by this energy-absorbing device. Along with this energy absorption, the intrusion in passenger compartment is also reduced by considerable amount. So for safer and comfortable car with inner impact energy absorber is one of the best options available. This will get implement by this research work.

Aluminum Foam Applications for Impact Energy Absorbing Structures

1997 ◽  
Author(s):  
L. Lorenzi ◽  
A. Fuganti ◽  
E. Todaro ◽  
E. Fossat
Keyword(s):  
Impact Energy ◽  
Aluminum Foam ◽  
Energy Absorbing

Prehistoric Effect of the Stamping Process on the Crash Analysis of an Automobile under Frontal Impact

2013 ◽  
Vol 711 ◽  
pp. 149-154 ◽  
Author(s):  
Se Ho Kim
Keyword(s):  
Impact Load ◽  
Crash Analysis ◽  
Frontal Impact ◽  
Vehicle Model ◽  
Side Member ◽  
Frontal Crash ◽  
Full Vehicle ◽  
Load Carrying ◽  
Crash Characteristics ◽  
The Impact

In this paper, a frontal crash analysis is carried out with a full vehicle model in order to investigate the influence of stamping effects of auto-body members on the crash characteristics of the vehicle. Stamping effects are considered for load carrying members such as the front side member and the rear lower. From the analysis result considering stamping effects, it is conformed that stamping history has to be considered for longitudinal members simultaneously that transfer the impact load under the frontal impact. Comparison of simulation result with experimental one also shows that the prediction accuracy of the crash analysis is remarkably improved.

3D interpenetrating piezoceramic-polymer composites with high damping and piezoelectricity for impact energy-absorbing and perception

2022 ◽  
pp. 109617
Author(s):  
Jing Li ◽  
Ying Yang ◽  
Huan Jiang ◽  
Yunhe Wang ◽  
Yanyu Chen ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Impact Energy ◽  
Energy Absorbing

Research on High Crashworthiness Level Bridge Barrier with Limited Working Width

2013 ◽  
Vol 405-408 ◽  
pp. 1521-1526
Author(s):  
Shu Ming Yan ◽  
Ning Jia ◽  
Xin Wang ◽  
Liang Ma ◽  
Xiang Zhang ◽  
...  
Keyword(s):  
Impact Energy ◽  
Simulation Models ◽  
Safety Performance ◽  
Bridge Piers ◽  
Frontal Impact ◽  
Concrete Wall ◽  
Upper Deck ◽  
Reinforced Concrete Wall ◽  
The Impact ◽  
Lower Deck

The distance between barriers of lower deck and bridge piers of upper deck is small in Luotang River Double-Deck Viaduct. And so impact accidents with barriers of lower deck will result in vehicle frontal impact with bridge piers of upper deck, which will cause serious consequences for the main structure of bridge. So it is necessary to design a special barrier for bridge pier protecting. A kind of composite barrier is put forward considering safety performance, landscape, economic and other factors. This barrier adopted impact resistant steel as upper part and reinforced concrete wall as lower part. The barrier safety performance was evaluated by means of computer simulation with simulation models checked through full-scale impact tests results. The analysis results indicate that this barrier can protect bus with impact energy of 520kJ, unit truck with 650kJ and tractor-trailer truck with 894kJ, far higher than the highest impact energy 520kJ in current standards, and the entire performance index can meet standard requirements. It can be sure that during the impact process the deformed barrier and incline-out vehicles cannot collide with bridge piers of upper deck.

Evaluation of Deformable Barrier Designs and Associated Compatibility Metrics in Full Frontal Impact Testing

2005 ◽  
Author(s):  
Steven Reagan ◽  
Xioawei Li ◽  
Saeed Barbat
Keyword(s):  
Computer Simulation ◽  
Research Laboratory ◽  
Time History ◽  
Impact Testing ◽  
Frontal Impact ◽  
Vehicle To Vehicle ◽  
Compression Stiffness ◽  
Structural Architecture ◽  
Transportation Research ◽  
Energy Absorbing

Several modifications to an existing deformable barrier are investigated for their ability to predict the presence of secondary energy absorbing structures (SEAS) using four deformable barrier designs with simulated impact by two vehicles. This study is motivated by the assumption that SEAS may enhance vehicle-to-vehicle compatibility and it is desirable to know if SEAS presence and its benefits are detectable through dynamic barrier testing. The considered barrier types are modifications of the Transportation Research Laboratory (TRL) barrier consisting of two layers, a front and rear. Each layer is 150mm thick with the first (front-most with respect to the vehicle) layer compression stiffness of 0.34 MPa and the second (rear-most) of 1.71 MPa. Proposed modifications to the (original, baseline) barrier are: 1. Increase the stiffness of a localized region of the front layer to 1.71 MPa (between ground heights of 330mm and 580mm). 2. Increase the depth of the second layer to 200 mm. 3. lncrease the depth of the second layer to 300 mm and use a single, non-segmented piece for the entire layer. The resulting four barrier configurations are all assumed to have 125 × 125 mm segmented “cells” supported by load time-history transducers. Computer simulation of impact by four vehicle models differing in mass and structural architecture is used. Four vehicle metrics intended to measure compatibility through impact with deformable barriers are used to quantify each barrier design’s ability to detect SEAS. Using the metrics outlined in this paper, a barrier design with stiffened rows three and four is best suited for SEAS detection. This conclusion is based on its sensitivity to four vehicle designs with and without SEAS as well as consistency of trends.

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