scholarly journals Numerical Modelling and Multi Objective Optimization Analysis of Heavy Vehicle Chassis

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 2028
Author(s):  
Abhishek Agarwal ◽  
Linda Mthembu
Keyword(s):  
Motor Vehicle ◽  
Equivalent Stress ◽  
Optimization Techniques ◽  
Mass Reduction ◽  
Space Filling ◽  
Design Scheme ◽  
Taguchi Design Of Experiments ◽  
Cross Member ◽  
Vehicle Chassis ◽  
Optimal Space

The primary supporting structure of an automobile and its other vital systems is the chassis. The chassis structure is required to bear high shock, stresses, and vibration, and therefore it should possess adequate strength. The objective of current research is to analyze a heavy motor vehicle chassis using numerical and experimental methods. The CAD design and FE analysis is conducted using the ANSYS software. The design of the chassis is then optimized using Taguchi design of Experiments (DOE); the optimization techniques used are the central composite design (CCD) scheme and optimal space filling (OSF) design. Thereafter, sensitivity plots and response surface plots are generated. These plots allow us to determine the critical range of optimized chassis geometry values. The optimization results obtained from the CCD design scheme show that cross member 1 has a higher effect on the equivalent stresses as compared to cross members 2 and 3. The chassis mass reduction obtained from the CCD scheme is approximately 5.3%. The optimization results obtained from the OSF scheme shows that cross member 2 has a higher effect on equivalent stress as compared to cross members 1 and 3. The chassis mass reduction obtained from optimal space filling design scheme is approximately 4.35%.

scholarly journals Modelling and FE Simulation of HVC Using Multi Objective Response Surface Optimization Techniques

2021 ◽  
Vol 31 (6) ◽  
pp. 307-315
Author(s):  
Abhishek Agarwal ◽  
Linda Mthembu
Keyword(s):  
Response Surface ◽  
Fe Simulation ◽  
Material Selection ◽  
Equivalent Stress ◽  
Optimization Techniques ◽  
Production Costs ◽  
Design Scheme ◽  
Stress Deformation ◽  
Vehicle Chassis ◽  
Optimal Space

The purpose of an automotive chassis is to maintain the shape of the vehicle and bear the various loads that are applied to the vehicle. The structure typically accounts for a large portion of the development and production costs of the new vehicle program, and the designer has many different structural concepts available. Choosing the best is important to ensure acceptable structural performance under other design constraints, such as cost, volume and method of production, product application, and more. The material selection for chassis depends upon various factors like lightness, economy, safety, recyclability, and circulation of life. The current study aims to perform optimization of the design of a heavy vehicle chassis using central composite design & optimal space fill design scheme (s) with the material tested is Al6092/SiC/17.5p MMC. Different design points are generated using design of experiments. The equivalent stress, deformation and mass are evaluated for each design points. The CAD modelling and FE simulation of heavy motor vehicle chassis is conducted using ANSYS software. From the optimization conducted on chassis design, response surface plots of equivalent stress, deformation and mass are generated which enabled to determine the range of dimensions for which these parameters are maximum or minimum. The use of Discontinuously Reinforced Aluminium-Matrix Composites Al6092/SiC/17.5p MMC aided to reduce weight of chassis by 66.25% and 66.68% by using CCD and Optimal space fill design scheme respectively, without much reduction in strength of chassis.

Analysis of the stress-strain state of a vertical ground electrode system for permafrost soils under pushing loads

2021 ◽  
pp. 77-89
Author(s):  
I. S. Sukhachev ◽  
P. V. Chepur ◽  
A. A. Tarasenko ◽  
A. A. Gruchenkova ◽  
Yuhai Guan
Keyword(s):  
Equivalent Stress ◽  
Side Surface ◽  
Metal Structure ◽  
Vertical Displacement ◽  
Soil Mass ◽  
Electrode System ◽  
Plastic Properties ◽  
Design Scheme ◽  
Permafrost Soils ◽  
Vertical Ground

The article proposes the design, design scheme and model of a vertical ground electrode system with lobe lugs for permafrost soils. The model was implemented using the ANSYS software. In the design scheme, the soil — ground electrode system is taken into account, the elastic-plastic properties of the soil are taken into account by the Drucker — Prager model. When modeling the work of the foundation soils, the Mises strength condition was adopted, according to which the equivalent stress is calculated under the condition of the material hydrostatic compression. The following boundary conditions are accepted: a cylinder-shaped soil mass is rigidly fixed along the lower face and along the side surface of the cylinder. Calculations are made for 5 standard sizes of grounding conductors. Maps of the distribution of stresses in the metal structure of the ground electrode (the rod and petals-emphasis) are received, the movements of the ground electrode in the soil mass are determined. The dependences between the maximum equivalent stresses in the ground electrode lobes and the value of vertical displacement in the ground base are established, as well as the amount of movement of the earthing pad, at which the effective equivalent voltages reach critical values in the area where the paddles are adjacent to the rod.

scholarly journals Impact Analysis on Go-Kart Chassis with Variable Speeds using Ansys 19.0

2019 ◽  
Vol 8 (6) ◽  
pp. 2614-2620 ◽  
Keyword(s):  
Impact Analysis ◽  
Motor Vehicle ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Solid Works ◽  
Aisi 4130 ◽  
The One ◽  
Vehicle Chassis ◽  
The Impact ◽  
The Given

The main aim of this paper is to model the go kart chassis in solid works and perform the impact analysis of the motor vehicle chassis in Ansys. The purpose of impact analysis is to study the behaviour of the chassis during impact on the go-kart chassis. The National Go Kart Racing is the one of the ways which provide the platform for doing innovations and showing creativity of students. The motor vehicle chassis is completely different from standard automobile chassis. The basic requirements of the chassis will be less weight and more strength. The material that we opted for this chassis is AISI 4130 which is a medium carbon steel having good tensile strength and better machinability and offers good balance to toughness and ductility. Such that by performing impact analysis at different impact speeds we are going to analyses the chassis behaviour for the given conditions. The chassis frame is backbone of vehicle it should be able to with stand different types of loads that are developed during vehicle at rest and in motion. The given chassis is tested under different impact conditions and the results such as deformations, stresses are determined using ANSYS 19.0 software.

scholarly journals Application of Taguchi Optimization Techniques to the Combustor Design Process

1995 ◽  
Author(s):  
M. L. Cooner ◽  
R. S. Reynolds ◽  
R. Srinivasan
Keyword(s):  
Optimization Techniques ◽  
Operating Conditions ◽  
Design Parameters ◽  
Surface Cooling ◽  
Taguchi Optimization ◽  
Initial Development ◽  
Taguchi Design Of Experiments ◽  
Primary Zone ◽  
Improved Design ◽  
Characteristics Development

This paper describes the application of Taguchi design of experiments (DOE) methods to the initial development of the T800-LHT-801 growth engine combustor design. The performance of a gas turbine combustor is strongly influenced by the primary zone aerodynamics and stoichiometry. The interactions between fuel spray and airflows through swirlers, primary jets, and dome surface cooling dominate the primary zone characteristics. Development of a robust combustor design requires a good knowledge of the relative sensitivities of these interactions. In this application, the Taguchi DOE method was used to efficiently determine the design parameters driving the combustor performance, while minimizing the number of tests. The improved design configuration resulted in 60 percent reduction in Lean Blow Out (LBO), 140°C reduction in peak wall temperature, and elimination of carbon formation potential at severe operating conditions.

Design and Analysis of State Transport Utility Vehicle-Bus

2019 ◽  
Vol 11 (2) ◽  
Author(s):  
Vikas Radhakrishna Deulgaonkar ◽  
Varun A. Shitole ◽  
Rohan M. Panage
Keyword(s):  
Finite Element ◽  
Motor Vehicle ◽  
Bending Moment ◽  
Structural Features ◽  
Element Analysis ◽  
Shell Elements ◽  
Public Transport System ◽  
Section Modulus ◽  
Cross Member ◽  
Utility Vehicle

Passenger transport is an inseparable ingredient of public transport system for developing and developed nations. In present work design and analysis of state transport utility vehicle ~ bus is carried out. Present paper focuses on the design enhancements in structural features of sub and superstructure without any alterations on the chassis provided by OEMs. Limiting dimensions of bus as prescribed by automotive industry standard and central motor vehicle rules are the design constraints accounted in the present work. This work was commenced with the thorough study of sub and superstructure configurations, seat locations, passenger load patterns, locations of doors, windows and emergency exits and other relevant bus attributes. Hand calculations for evaluation gross section modulus of chassis and cross member combination are presented. Usage of shear force and bending moment diagrams to evaluate the stress and deflection for the proposed load patterns is made before proceeding for finite element analysis. Finite element modelling and analysis of the sub and super structure combination is carried using shell elements with the presumption that chassis of the bus is rigid. Roll-over analysis of bus for the present configuration is presented.

Structural Optimization Techniques for Developing Efficient Lightweight Vehicles and Components

2009 ◽  
Author(s):  
Raj Mohan Iyengar ◽  
Srinivasan Laxman ◽  
Shawn Morgans ◽  
Ramakrishna Koganti
Keyword(s):  
Structural Optimization ◽  
Optimization Techniques ◽  
Light Weight ◽  
Structural Stiffness ◽  
Trial And Error ◽  
Mass Reduction ◽  
Structural Requirements ◽  
Vehicle Development

Developing automotive vehicles and components to achieve light-weight designs and to meet design targets on structural stiffness, modal frequencies, durability, and crashworthiness, can no longer be driven by a “trial-and-error” strategy. Structural optimization tools provide the necessary analyses during the initial stages of vehicle development to arrive at the most efficient and effective designs. In this paper, we illustrate the importance of topological and gage optimization in achieving mass reduction without compromising on the structural requirements through two design examples.

Sign in / Sign up

Export Citation Format

Share Document