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.

Modal Analysis of Bus Body Structure using Finite Element Analysis Technique

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 ◽  
Modal Analysis ◽  
Mode Shapes ◽  
Body Structure ◽  
Element Analysis ◽  
Industry Standards ◽  
Analysis Technique ◽  
Bus Body ◽  
Good Agreement

Present work deals with evaluation of dynamic characteristics of a bus body structure. The bus under consideration is a sleeper non-air conditioned vehicle for a passenger capacity of thirty and it is designed adhering to automotive industry standards. Modal analysis of the proposed bus design is carried using Ansys Workbench. With the aid of modal analysis ten mode shapes of the bus are postulated, corresponding frequencies and deflections are estimated. Mesh generator is used to mesh the complex bus model. The deflection and frequency magnitudes of proposed bus model is found with the help of Finite Element Analysis (FEA) technique and they are in good agreement with experimental results available in literature. Engine being the prime source of excitation, it’s frequency is compared with the frequencies determined by FEA of the proposed bus body and it is observed that the frequencies of the bus body for ten different modes are far less than the minimum resonant engine frequency.

Development of a Profile Matching Criteria to Model Dents in Pipelines Using Finite Element Analysis

2017 ◽  
Author(s):  
Janine Woo ◽  
Muntaseer Kainat ◽  
Samer Adeeb
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Additional Stress ◽  
Element Analysis ◽  
Fea Model ◽  
Profile Matching ◽  
Industry Standards ◽  
Stress Risers ◽  
Matching Criteria ◽  
Key Indicators

Current industry standards cite depth and interaction with additional stress risers as the key indicators of pipeline integrity concerns in regards to dents. There have been significant efforts towards the improvement of these benchmarks in recent years. Several dent assessment methods are presented in literature, including research focused on the use of finite element analysis (FEA). The accurate assessment of dents using FEA is heavily reliant on how close the shape produced by the FEA model aligns with the shape of the actual dent. The research presented in this paper has been conducted to evaluate the sensitivity of the stresses and strains to the dent profile shape. Information regarding the existence, shape, and size of dents is typically provided by in-line inspection (ILI) tools. An FEA model is then built in commercially available software, ABAQUS, to create a dent profile that closely resembles the profile given by the ILI. The study in this paper assesses the effect of different indenter sizes on the stresses and strains within the dent and provides a recommendation to quantify the error between the ILI and FEA profiles. The process of matching a dent profile using FEA is compared to an existing analytical method to calculate strain, the equations proposed in ASME B31.8. The FEA results were found to be more conservative than the strains calculated using ASME B31.8.

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.

Model and Finite Element Analysis of a Bus Body

2012 ◽  
Vol 605-607 ◽  
pp. 596-599
Author(s):  
Feng Wang ◽  
Qin Man Fan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
The Body ◽  
Body Frame ◽  
Element Analysis ◽  
Maximum Deformation ◽  
Emergency Braking ◽  
Computing Platform ◽  
Bus Body ◽  
Stress And Deformation

ANSYS is used as the finite element computing platform to analysis a certain type of bus body frame under four load conditions of bending conditions, reversing conditions, the bending and torsion conditions and the emergency braking conditions. The constraints and load approach in the four conditions are given in this paper. A certain type of bus body skeleton program and the finite element analysis are conduct. The result shows that: (1) Bus body frame changing brings the re-distribution of the stress, making the overall stress and deformation of the body skeleton relatively uniform. (2) The improved program makes more than 250KG weight losing of the body frame and the changing location of the maximum deformation under the bending conditions. The maximum bending deform increased is only 8.92%.

Compliant Assembly Variation Analysis Using Component Geometric Covariance

2004 ◽  
Vol 126 (2) ◽  
pp. 355-360 ◽  
Author(s):  
Jaime A. Camelio ◽  
S. Jack Hu ◽  
Samuel P. Marin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Principal Component ◽  
Computational Effort ◽  
Deformation Pattern ◽  
Variation Analysis ◽  
Element Analysis ◽  
Compliant Assembly ◽  
Compliant Parts ◽  
Deformation Patterns

Dimensional variation is one of the most critical issues in the design of assembled products. This is especially true for the assembly of compliant parts since clamping and joining during assembly may introduce additional variation due to part deformation and springback. This paper discusses the effect of geometric covariance in the calculation of assembly variation of compliant parts. A new method is proposed for predicting compliant assembly variation using the component geometric covariance. It combines the use of principal component analysis (PCA) and finite element analysis in estimating the effect of part/component variation on assembly variation. PCA is used to extract deformation patterns from production data, decomposing the component covariance into the individual contributions of these deformation patterns. Finite element analysis is used to determine the effect of each deformation pattern over the assembly variation. The proposed methodology can significantly reduce the computational effort required in variation analysis of compliant assemblies. A case study is presented to illustrate the methodology.

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