Methods Used to Analyze the Impact of Passenger Cars Bodies Design Features on their Stiffness and Strength Characteristics

Ashurkova, Svetlana; Kobishchanov, Vladimir; Kolchina, E. V.

doi:10.1016/j.proeng.2017.10.688

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…e torsional stiffness and the first-order torsional vibration frequency are the key properties for a car body and they are major concerns in the car body design and its optimization procedure. However, irregular structures, e.g., grooves, protrusions and reinforcing ribs, and so on, make them difficult to accurately calculate by a single method of numerical analysis [1,2]. e finite element method (FEM) provided a method to compute the torsional stiffness and the low-order torsional frequency of the car body [3].…”

Section: Introductionmentioning

confidence: 99%

Research on Torsional Property of Body-In-White Based on Square Box Model and Multiobjective Genetic Algorithm

Meng

Yuan

Zhao

et al. 2021

Mathematical Problems in Engineering

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In order to assess the performance of a vehicle in the conceptual design stage, a square box model was proposed to predict the torsional stiffness and the first-order torsional frequency of Body-in-White. The structure of Body-in-White was decomposed into eight simple structural surfaces, from which a square box model was constructed. Based on the finite element method, modified shear stiffness of each simple structure surface was calculated and the torsional stiffness was obtained. Then, simple structural surfaces of Body-in-White were constructed into an eight degree-of-freedom series spring system to calculate the first-order torsional frequency. Furthermore, a multiobjective genetic algorithm was used to determine the thickness and structural reinforcement of panels with small stiffness, so as to achieve the goal of increasing the stiffness while reducing the mass of the panel. The result shows that the optimal values of thickness are reduced by around 9.9 percent without affecting their performance by the proposed method. Compared to the prediction results obtained with the complicated numerical simulation, the relative error of the square box model in predicting the torsional stiffness is 6.04 percent and in predicting the first-order torsional frequency is 0.95 percent, indicating that the prediction model is effective.

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Section: Introductionmentioning

confidence: 99%

Research on Torsional Property of Body-In-White Based on Square Box Model and Multiobjective Genetic Algorithm

Meng

Yuan

Zhao

et al. 2021

Mathematical Problems in Engineering

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“…A method to analyze the impact of design features of the integral scheme of passenger cars bodies on their stiffness and strength characteristics is proposed in [15].…”

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confidence: 99%

Analysis of stress state of passenger car bodies

Martynov,

Kalabukhin,

Trufanova

et al. 2024

TST

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The overwhelming majority of compartment cars owned by Ukrzaliznytsia JSC were manufactured in Germany in the 70-80s of the last century. They have exhausted their resource. The metal structures of the frame and body are badly worn. Extending the service life of such cars requires a thorough study of the possibilities of their further use. The article discusses the results of an analysis of the stress-strain state of passenger car bodies. A three-dimensional model of the body was built. Body strength calculations were performed using the finite element method using the ANSYS software package. The racks and upper trim of the side walls, roof arches, etc. were considered as rods. The body frame, substructure, side wall cladding, end walls, roof cladding and floor deck were modeled using plate finite elements. Calculations were carried out in accordance with the requirements of current regulatory documents. The maximum speed was assumed to be 160 km/h. The developed model was verified. The results obtained were compared with the results of experimental studies (strength tests). The similarity of the results confirmed the correctness of the created model. A study was carried out of the stress-strain state of the body at nominal sizes with standard skin thicknesses. It has been established that the stresses arising in the most loaded areas do not exceed the permissible values for structural steels. The resulting model of the body will subsequently make it possible to determine the wear limits of the load-bearing structures of the frame and body. It also allows, using the calculation-probabilistic method, taking into account the probabilistic nature of all existing loads, to calculate the reliability indicators of the car and its final life.

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Forecasting of Life Service of Hopper Car Body Load-Bearing Structure on Basis of Mathematical Modeling Methods

Antipin

Kobishanov

Mitrakov

2019

Lecture Notes in Mechanical Engineering

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Methods Used to Analyze the Impact of Passenger Cars Bodies Design Features on their Stiffness and Strength Characteristics

Cited by 6 publications

References 12 publications

Research on Torsional Property of Body-In-White Based on Square Box Model and Multiobjective Genetic Algorithm

Research on Torsional Property of Body-In-White Based on Square Box Model and Multiobjective Genetic Algorithm

Analysis of stress state of passenger car bodies

Forecasting of Life Service of Hopper Car Body Load-Bearing Structure on Basis of Mathematical Modeling Methods

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