scholarly journals SUBSTANTIATION OF DESIGN SOLUTIONS FOR PASSENGER CAR BODY BEARING STRUCTURES WITH PERFORATED REINFORCING ELEMENTS

2019 ◽  
Vol 2019 (6) ◽  
pp. 69-76
Author(s):  
Светлана Ашуркова ◽  
Svetlana Ashurkova ◽  
Дмитрий Антипин ◽  
Dmitriy Antipin
Keyword(s):  
Finite Element ◽  
Model Development ◽  
Element Model ◽  
Structure Design ◽  
The Body ◽  
Passenger Car ◽  
Design Models ◽  
Car Body ◽  
Body Design ◽  
Bearing Structure

As a method of investigations there is adopted a computer mathematical modeling based on the use of a finite element method. The choice of a type and perforation parameters is connected with the problem in the large array creation of bearing structure design models of passenger car bodies. The analysis of investigations carried out in the field of multi-variation computations has shown that the most efficient investigation method is a superelement reduction. Its use allows decreasing labor and time costs for the body design model development at the expense of the initial super-element with the perforation area for a new one. The appraisal of the procedure offered on the choice of a body efficient bearing structure with the perforated profiles is carried out by the example of the body of a domestic passenger car according to the criteria of strength and assurance of the highest weight reduction of a bearing structure. In the first stage of the work there are defined types and parameters of perforation possible for use in the structure. Finite element design models of car bodies are developed. On the basis of strength computation results the reinforcing elements of the structure are offered which have a margin safety for perforation application in them. Based on the analysis of car body bearing structure there is carried out a choice of an efficient unit of a finite element model which will be used as a super-element. In the next stage of the work there are developed and computed structures of car bodies with the perforation types under consideration and with the use of superelements. The computation results have shown that maximum design stresses of car bodies for all perforation types under consideration do not exceed legitimate values. As an efficient bearing structure of a passenger car body there is adopted a car body with the sixth type of perforation ensuring the largest decrease of structure metal intensity and satisfying strength requirements. The procedure developed can be used at designing modern bearing structures of passenger car bodies having improved technical and economic values.

SIMULATION OF LOADING OF THE BODY OF A DOUBLE-STOREY PASSENGER CAR IN A FOCAL FIRE WITH SPECIFIED CHARACTERISTICS

2020 ◽  
Author(s):  
Dmitriy Antipin ◽  
Mihail Bulychev ◽  
Gennadiy Petrov
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Carrying Capacity ◽  
Thermal Loading ◽  
The Body ◽  
Finite Element Scheme ◽  
Passenger Car ◽  
Element Scheme ◽  
Car Body ◽  
Element Method

A simplified method has been developed for assessing the loading of the load-bearing systems of passenger cars under thermal loading with a fire spot with limited properties. A system of simplifications for realizing a combustion spot is substantiated. A method for its implementation is proposed. The description of the object of research is given with the necessary thoroughness of presentation. A finite element scheme has been developed and adapted, taking into account the application of thermal loads in the system of an industrial software complex that implements the finite element method. Verification of the finite element scheme was carried out taking into account full-scale normative experiments. A conclusion is made about the possibility of the applicability of the finite element scheme for the study. Numerical experiments have been carried out to assess the carrying capacity of the body of a double-deck passenger car when it is exposed to a combustion center with known thermal parameters. The experiments were built and performed in a finite element method system. The results of simulations in the affected zone of the alleged fire were obtained for the conditional spot of its location. Comparison of the results with the static loading mode of the car body is considered. The analysis of the results obtained is carried out. A conclusion is given on the effect of a small localization fire on the carrying capacity of the car body. The proposed method is evaluated taking into account the possibility of further use

Study on Effect of Rolling Crashworthiness of the Main SUV Vehicle Components

2011 ◽  
Vol 230-232 ◽  
pp. 620-624
Author(s):  
Guang Yao Zhao ◽  
Peng Fu ◽  
Chuan Yin Tang ◽  
Di Zhang
Keyword(s):  
Finite Element ◽  
Energy Absorption ◽  
Simulation Analysis ◽  
Element Model ◽  
Test Methods ◽  
The Body ◽  
Design Parameters ◽  
Software Environment ◽  
Element Analysis ◽  
Body Design

Aimed at the body of SUV vehicle , according to the criteria of FMVSS216 vehicle safety regulations , in LS-DYNA software environment , the simulation analysis of effects of the design parameters of main components of the body on roll crashworthiness in the process of vehicle crashing and rolling is presented in the paper , based on finite element analysis method, with the test methods of applying pendulum collision. The characteristics of the crashworthiness and energy absorption of the pillar pendulum which have different design parameters, such as shapes and thickness, et. al., are emphasized particularly in the paper. A simple finite element model of SUV is established, the effect of different design parameters of stiffness of body cover to the whole distribution of energy absorption and the reasonable transfer of total energy is discussed. The noticeable issue and advice on body design of SUV is proposed.

scholarly journals FATIGUE LIFE PREDICTION OF BEARING STRUCTURE OF PASSENGER CAR BODY WITH PERFORATED SUPPORTING ELEMENTS

2019 ◽  
Vol 2019 (7) ◽  
pp. 59-65
Author(s):  
Дмитрий Антипин ◽  
Dmitriy Antipin ◽  
Светлана Ашуркова ◽  
Svetlana Ashurkova
Keyword(s):  
Fatigue Life ◽  
Life Prediction ◽  
The Body ◽  
Fatigue Life Prediction ◽  
Life Assessment ◽  
Design Strength ◽  
Passenger Car ◽  
Car Body ◽  
Fatigue Life Assessment ◽  
Bearing Structure

The purpose of the work is a fatigue life assessment for bearing structures of passenger car bodies with perforated supporting elements through the methods of computer mathematical modeling. The fulfilled analysis of investigations in the field of the fatigue life assessment for welded bearing structures of car bodies has shown that its assessment should be carried out in a dynamic setting with the development of a spatial dynamic model of a car body. The fatigue life assessment in the most loaded areas of perforated supporting elements in car bodies was carried out with the use of two procedures: Serensen-Kogaev procedure and Bolotin one. There are considered ten versions of supporting element perforation in a passenger car body. The development of finite element models of car bodies with the mentioned options is carried out by the example of the body of a domestic passenger car. On the basis of the design strength computation results there are defined three most loaded areas of perforated supporting elements. The refined assessment of a dynamic stressed state of the areas under investigations is carried out through the method of an area successive accentuation. As a result of the investigation there are obtained life values of the most loaded areas for a passenger car body bearing structure for all perforation options under consideration. The results obtained confirm passenger car operation safety with the offered option of perforation and are evidence of the purposefulness in the application of the procedure offered for the fatigue life prediction of similar bearing structures.

scholarly journals APPLICATION OF CAD FOR ANALYSIS OF STRENGTH CHARACTERISTICS OF PASSENGER CAR BODY STRUCTURES

2021 ◽  
Author(s):  
Svetlana Ashurkova
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Strength Characteristics ◽  
Cad Tools ◽  
Passenger Car ◽  
Design Models ◽  
Load Bearing ◽  
Car Body

The development of finite element design models of the passenger car body using modern CAD tools was carried out. An assessment of the strength, stability and fatigue life of the load-bearing structures of the passenger car body has been carried out.

Numerical Design and Analysis of a Certain White Bodywork

2009 ◽  
Vol 16-19 ◽  
pp. 110-114
Author(s):  
Ying Yang ◽  
Yu Sheng Li ◽  
Fan Liang Meng
Keyword(s):  
Finite Element ◽  
Natural Frequency ◽  
Flexural Rigidity ◽  
Dynamic Performance ◽  
Element Model ◽  
Structure Design ◽  
The Body ◽  
Torsional Stiffness ◽  
Static Characteristics ◽  
Numerical Design

Develops a finite element model to analyze the dynamic/static sensitivities of a certain white bodywork, i.e., the sensitivities of its bodywork’s natural frequency, torsional stiffness and flexural rigidity and mass to the thickness of sheet to make the bodywork, thus finding out the main parts affecting greatly the dynamic and static characteristics of bodywork to optimize its structure design. According to the sizes of contribution the body mass will make to the natural frequency and torsional stiffness and flexural rigidity, an optimal conceptual design is given. This method provides an important reference for improving the dynamic performance of bodywork, lightening its weight and optimizing its design.

A Multi-Modality Image Data Collection Protocol for Full Body Finite Element Model Development

2009 ◽  
Author(s):  
F. Scott Gayzik ◽  
Craig A. Hamilton ◽  
Josh C. Tan ◽  
Craig McNally ◽  
Stefan M. Duma ◽  
...  
Keyword(s):  
Finite Element ◽  
Data Collection ◽  
Finite Element Model ◽  
Model Development ◽  
Image Data ◽  
Element Model ◽  
Full Body

Electric Bus Body Lightweight Design Based on Multiple Constrains

2012 ◽  
Vol 538-541 ◽  
pp. 3137-3144 ◽  
Author(s):  
Wen Wei Wang ◽  
Cheng Jun Zhou ◽  
Cheng Lin ◽  
Jiao Yang Chen
Keyword(s):  
Finite Element ◽  
Lightweight Design ◽  
Element Model ◽  
The Body ◽  
Body Frame ◽  
Electric Bus ◽  
Free Model ◽  
Bus Body ◽  
The Finite Element Model ◽  
Torsion Condition

The finite-element model of pure electric bus has been built and the free model analysis, displacement and stress analysis under bending condition and torsion condition have been conducted. Optimally design the pure electric bus frame based on multiple constrains. Reduce the body frame quality by 4.3% and meanwhile meet the modal and stress requirements.

Additional Damping Conditions Analysis and Calculation for Exciting Force and External Load

2013 ◽  
Vol 579-580 ◽  
pp. 507-511
Author(s):  
Yi Xiang Liu ◽  
Yong Mei Wang
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Structure Design ◽  
Exciting Force ◽  
Reduction Gear ◽  
Solid Model ◽  
Gear Noise ◽  
Force Reduction ◽  
And Control ◽  
The Impact

This paper firstly starting mechanism of vibration and noise from gear, gear noise mechanism is explained, and analyze the factors and the impact of noise on the gear reducer. Secondly, the establishment of a complete solid model of gear reducer and reducer model for finite element model, the reduction gear box gear reducer of modal analysis and finite element modal calculation, and points out the dynamic analysis of structure, size and weight factor is proportional to the reciprocal of the modal frequencies of each mode is the with the frequency is low, that is, the greater the weight. Once again, the main measure of load and control of gear noise of gear is analyzed, including the calculation, for exciting force reduction gear reducer gear load computation. The analysis and calculation are the theoretical basis of gear structure design and its performance evaluation.

scholarly journals APPLICATION OF RIGID LINKS IN STRUCTURAL DESIGN MODELS

2017 ◽  
Vol 13 (3) ◽  
pp. 119-137 ◽  
Author(s):  
Sergey Yu. Fialko
Keyword(s):  
Finite Element ◽  
Structural Design ◽  
Stiffness Matrix ◽  
Sparse Matrix ◽  
Element Model ◽  
Rigid Bodies ◽  
Design Models ◽  
Adjacency Graph ◽  
Direct Solvers ◽  
The Finite Element Model

A special finite element modelling rigid links is proposed for the linear static and buckling analysis. Unlike the classical approach based on the theorems of rigid body kinematics, the proposed approach preserves the similarity between the adjacency graph for a sparse matrix and the adjacency graph for nodes of the finite element model, which allows applying sparse direct solvers more effectively. Besides, the proposed approach allows significantly reducing the number of nonzero entries in the factored stiffness matrix in comparison with the classical one, which greatly reduces the duration of the solution. For buckling problems of structures containing rigid bodies, this approach gives correct results. Several examples demonstrate its efficiency.

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