scholarly journals Análisis estructural de chasis prototipo para automóvil tipo SAE BAJA

2020 ◽  
pp. 12-19
Author(s):  
Hector HUERTA-GAMEZ ◽  
Edgar Daniel HERRERA-OLIVARES ◽  
José Luis ZUÑIGA-CERROBLANCO ◽  
Antonio Alberto AGUILAR-MORENO
Keyword(s):  
Numerical Analysis ◽  
Side Impact ◽  
Structural Members ◽  
Driver Safety ◽  
Rear Impact ◽  
Vehicle Components ◽  
Impact Side ◽  
Front Impact

In the present work, the numerical analysis of the structure of a prototype of a SAE BAJA type automobile chassis is developed. Within the proposal of the model, factors that become important when implementing it are considered, these factors are: driver safety, sufficient spaces for vehicle components, among other basic points. Likewise, the model is subjected to different tests established by the Society of Automotive Engineers (SAE), tests such as: Front impact, rear impact, side impact, overturn, landing tests for front jump and rear jump; the conditions to which these tests are subjected are extracted from articles (tests) and applied in the appropriate areas to have the most accurate and close to reality results. The analysis is carried out with different materials and profiles used for structural members, in this way the appropriate configuration of the profiles and materials is also obtained. Due to the satisfactory parameters obtained, a fairly efficient model is obtained, this has an impact on the necessary safety for the driver, basically, because the system has low deformations in the materials and withstands relatively high stresses.

scholarly journals Buggy Role Cage – Analysis and Design

2020 ◽  
Vol 10 (5) ◽  
pp. 589-599
Author(s):  
Anil Babu Seelam ◽  
Ayub Khan Aaqif Ahmed ◽  
Krishnamurthy H. Sachidananda
Keyword(s):  
Carbon Fiber ◽  
Point Of View ◽  
Side Impact ◽  
Analysis And Design ◽  
Rear Impact ◽  
Solid Works ◽  
Impact Side ◽  
Aisi 4130 ◽  
Front Impact ◽  
The Impact

Design and analysis of Buggy roll cage commonly used as a recreational vehicle on off road terrains have been studied. These vehicles are usually modified from their existing design to provide performance and safety. In this research paper, an attempt has been made to design a roll cage for a buggy considering different members of the roll cage. In this context roll cage has been drawn on solid works CAD software and has been analyzed using finite analysis by applying the different boundary conditions. The roll cage has been designed considering the AISI 4130 steel and carbon fiber considering five cases such as front impact, side impact, rear impact, drop test and roll over test to ensure safety of the operator to survive the impact scenario. The main significance of this study is to analyze buggy role cage from safety point of view of operator. From these results it can be concluded that carbon fiber roll cage is also one of the promising alternatives for roll cage design and can be recommended from safety point of view.

Crash Analysis of Bus Body Structure using Finite Element Analysis

2020 ◽  
Vol 12 (3) ◽  
Author(s):  
Vikas Radhakrishna Deulgaonkar ◽  
M.S. Kulkarni ◽  
S.S. Khedkar ◽  
S.U. Kharosekar ◽  
V.U. Sadavarte
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Side Impact ◽  
Crash Analysis ◽  
Element Analysis ◽  
Industry Standards ◽  
Bus Body ◽  
Impact Side ◽  
Front Impact ◽  
Deformation Patterns

Crash analysis of non-air-conditioned sleeper bus has been carried in present work. Using relevant automotive industry standards (052 and 119) bus dimensions are considered for design. Surface modeling technique is used to prepare computer aided model. Further the bus design is freeze using finite element analysis for different crash conditions as front impact, side impact and rear impact. Crash analysis of the proposed bus design is carried using Ansys Workbench. Using the outcomes from finite element analysis as stresses, deflections, internal and kinetic energies during various crash conditions are estimated. Mesh generator is used to mesh the complex bus model. The stress and deflection magnitudes of proposed bus model are in good agreement with the experimental results available in literature. Design improvements are made using the finite element analysis outcomes, observing the deformation patterns additional pillar members of suitable length are added to increase the dynamic crush and further enhance occupant safety during collisions.

scholarly journals A Methodological Study to Analyze and Design the Car Chassis

2021 ◽  
Vol 9 (12) ◽  
pp. 390-394
Author(s):  
Satishkumar Chittaliya
Keyword(s):  
Flexural Rigidity ◽  
Side Impact ◽  
Ansys Software ◽  
Element Analysis ◽  
Race Car ◽  
Secure Environment ◽  
Deformation Stress ◽  
Impact Side ◽  
Front Impact ◽  
Evaluation Parameters

Abstract: The car's chassis is also called a structure that locates and mounts all the vehicle's components. It also creates a secure environment for the occupants. The chassis will provide torsional and flexural rigidity to the vehicle that makes the chassis one of the most crucial elements of the vehicle. Therefore, the front impact, rear impact, side impact, front torsional, rear torsional, vertical bending, lateral bending analyses were performed. The contribution of chassis is not limited to supporting the vehicle’s component, but it extends to providing better performance and aesthetics. Therefore, the design of the car chassis must be done accordingly. The current paper deals with the study of the design and analysis of the race car. The deformation, stress, and Factor of safety were considered as the evaluation parameters which were obtained by Finite Element Analysis (FEA) in Ansys software. To design the chassis, the SolidWorks software was utilized. Keywords: Car Chassis, Design, FEA, Material Comparison.

Numerical Analysis for Progressive Collapse of a Multi-Storey Building due to an Explosion in its Basement

2011 ◽  
Vol 250-253 ◽  
pp. 3115-3119 ◽  
Author(s):  
Li Tian ◽  
Hao Wang
Keyword(s):  
Numerical Analysis ◽  
Progressive Collapse ◽  
Simulation Method ◽  
Structural Members ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Whole Process ◽  
Main Work ◽  
Storey Building

A numerical analysis for the progressive collapse of a reinforced concrete frame caused by an explosion in this structure’s basement is presented in this paper. The whole process from the detonation of the explosive charge to the complete demolition is reproduced. The main work is focused on the role of soil in structural collapse and failure mode of structural members. The analysis is simulated using ANSYS/LS-DYNA and proposes a new simulation method which is comparatively accurate and economic.

Analysis of All Terrain Vehicle (ATV) for Impact Loading and Roll over Considering the Safety of Occupants

2012 ◽  
Vol 232 ◽  
pp. 878-881 ◽  
Author(s):  
C.D. Naiju ◽  
K. Annamalai ◽  
Babu Bevin ◽  
Prakash Nikhil
Keyword(s):  
Impact Loading ◽  
Side Impact ◽  
Frontal Impact ◽  
Compact Structure ◽  
Engineering Research ◽  
Impact Side ◽  
Present World

All-terrain vehicles (ATV) are achieving wider response and significance in the present world. With their characteristic abilities of getting through any terrain along with their simple and compact structure, they rule the off-roading world. A new field of engineering research has been developed because of the increasing number of ATV accidents. For determining the reasons to how so many crashes occurs and how they can be prevented, a series of ATV tests were conducted. The tests included simulating an ATV for frontal impact, side impact and rolling over with added weight of a passenger, and due to a thrust effect. Through testing, the amount of weight needed to flip an ATV was determined. This paper highlights the ways to analyse the safety of its chassis in case of impacts or roll overs.

A Numerical Analysis of Pre-Deployment Effect of Side-Impact Airbags in Reducing Occupant Injuries

2013 ◽  
Author(s):  
Yi Yang Tay ◽  
Rasoul Moradi ◽  
Hamid M. Lankarani
Keyword(s):  
Numerical Analysis ◽  
High Speed ◽  
Motor Vehicle ◽  
Side Impact ◽  
Element Analysis ◽  
Vehicle Accidents ◽  
Injury Criteria ◽  
Acceleration Sensors ◽  
Head Injury Criteria ◽  
Occupant Injuries

Side impact collisions represent the second greatest cause of fatality in motor vehicle accidents. Side-impact airbags (SABs), though not mandated by NHTSA, have been installed in recent model year vehicle due to its effectiveness in reducing passengers’ injuries and fatality rates. However, the increase in number of frontal and side airbags installed in modern vehicles has concomitantly led to the rise of airbag related injuries. A typical side-impact mechanical or electronic sensor require much higher sensitivity due to the limited crush zones making SABs deployment more lethal to out-of-position passengers and children. Appropriate pre-crash sensing needs to be utilized in order to properly restraint passengers and reduce passengers’ injuries in a vehicle collision. A typical passenger vehicle utilizes sensors to activate airbag deployment when certain crush displacement, velocity and or acceleration threshold are met. In this study, it is assumed that an ideal pre-crash sensing system such as a combination of proximity and velocity and acceleration sensors is used to govern the SAB pre-deployment algorithm. The main focus of this paper is to provide a numerical analysis of the benefit of pre-deploying SAB in lateral crashes in reducing occupant injuries. The effectiveness of SABs at low and high speed side-impact collisions are examined using numerical Anthropomorphic Test Dummy (ATD) model. Finite Element Analysis (FEA) is primarily used to evaluate this concept. Velocities ranging from 33.5mph to 50mph are used in the FEA simulations. The ATD used in this test is the ES-2re 50th percentile side-impact dummy (SID). Crucial injury criteria such as Head Injury Criteria (HIC), Thoracic Trauma Index (TTI), and thorax deflection are computed for the ATD and compared against those from a typical airbag system without pre-crash sensing. It is shown that the pre-deployment of SABs has the potential of reducing airbag parameters such as deployment velocity and rise rate that will directly contribute to reducing airbag related injuries.

scholarly journals Analysis of a Lightweight Aluminum Vehicle Chassis in a Simulation-Based Design Approach

2020 ◽  
pp. 1-10
Author(s):  
Mohsen Alardhi ◽  
Fahad Almaskari ◽  
Melad Fahed ◽  
Jasem Alrajhi
Keyword(s):  
Safety Factor ◽  
Side Impact ◽  
Design Approach ◽  
Element Analysis ◽  
Trade Offs ◽  
Simulation Based Design ◽  
Simulation Based ◽  
Impact Side ◽  
Von Mises ◽  
Vehicle Chassis

This study investigates different chassis designs through a simulation-based design approach. The inherent aluminum ductility and softness could make chassis a daunting modification if not analyzed properly. Structural finite element analysis is comprehensively performed on a vehicle chassis for static loading cases up to 1G in equivalent acceleration. The analysis of the vehicle chassis of both A36 steel and 6061 aluminum for the scenarios of bump, front impact, side impact and a rollover. The von Mises stresses and displacement results showed that the steel chassis possessed higher safety factor in all load cases. The safety factors for an aluminum clone of the steel chassis in some load cases are below 1.0, hence indicating that the failure criterion has been triggered and failure would occur under the 1G load. The original aluminum chassis deformation is far more severe than steel reaching as high as 9.88 mm for the bump loading. A modified aluminum chassis is proposed, by optimizing the wall thickness of the rectangular bars. The slight increase in weight resulted in overcoming the deficiency of aluminum in load carrying capacity. An evaluation matrix procedure is implemented to analyze the trade offs between cost, weight and safety factor for the three chassis materials.

scholarly journals Crashworthiness of Traffic Light Steel Poles in Vehicle Collisions

2021 ◽  
Author(s):  
Preveen Kumar Siriya
Keyword(s):  
Field Testing ◽  
Element Model ◽  
Side Impact ◽  
Product Development Process ◽  
Efficient Design ◽  
Traffic Light ◽  
Simulation Tools ◽  
Vehicle Occupant ◽  
Vehicle Impact ◽  
Impact Side

Vehicle crashworthiness focuses on the capability of a vehicle to protect its occupants in a collision. The Canadian Highway Bridge Design Code [2] does not provide design criteria for vehicle occupant safety except by field testing. The test-guided product development process is very costly and time-consuming. As an alternative, computer simulation tools are increasingly being used. The aim of this research is to contribute to the efficient design of traffic light poles by developing an experimentally calibrated, computer-based, finite-element model using LSDYNA [54], capable of predicting accurately their response when subjected to vehicle impact. The case of steel pole embedded directly in soil was proved to be strong enough to offer protection under service loading and vehicle impact. Side impact crashed proved to be more severe for the vehicle occupant as a result of the weak structural performance of the side doors of the vehicle. Based on this an innovative pole supported on a hard rubber base is introduced to improve crashworthiness.

STM Modelling Methods of Structural Discontinuities

2017 ◽  
Vol 21 ◽  
pp. 73-77
Author(s):  
Vasile Murăraşu ◽  
Vasile Mircea Venghiac
Keyword(s):  
Reinforced Concrete ◽  
Numerical Analysis ◽  
Bearing Capacity ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Structural Members ◽  
Strut And Tie ◽  
Eurocode 2 ◽  
Modelling Methods

This paper presents Strut and Tie Method (STM) general modelling principles of discontinuity zones of structural members. In order to increase the precision for determining the bearing capacity of reinforced concrete beam ends, the possibility of simultaneously using two complementary versions of STM modelling of these extremities, statically determinate, complying with Eurocode 2, is analysed. To highlight the precision and simplicity of simultaneously applying the two modelling versions a numerical analysis is carried out, where the methodology is presented in detail.

scholarly journals Crashworthiness of Traffic Light Steel Poles in Vehicle Collisions

2021 ◽  
Author(s):  
Preveen Kumar Siriya
Keyword(s):  
Field Testing ◽  
Element Model ◽  
Side Impact ◽  
Product Development Process ◽  
Efficient Design ◽  
Traffic Light ◽  
Simulation Tools ◽  
Vehicle Occupant ◽  
Vehicle Impact ◽  
Impact Side

Vehicle crashworthiness focuses on the capability of a vehicle to protect its occupants in a collision. The Canadian Highway Bridge Design Code [2] does not provide design criteria for vehicle occupant safety except by field testing. The test-guided product development process is very costly and time-consuming. As an alternative, computer simulation tools are increasingly being used. The aim of this research is to contribute to the efficient design of traffic light poles by developing an experimentally calibrated, computer-based, finite-element model using LSDYNA [54], capable of predicting accurately their response when subjected to vehicle impact. The case of steel pole embedded directly in soil was proved to be strong enough to offer protection under service loading and vehicle impact. Side impact crashed proved to be more severe for the vehicle occupant as a result of the weak structural performance of the side doors of the vehicle. Based on this an innovative pole supported on a hard rubber base is introduced to improve crashworthiness.

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