Durability Analysis of Helical Coil Spring in Vehicle Suspension Systems

The suspension system in vehicles supports the vehicle's road stability and ride quality by scaling down the vibration responses resulting from road surface's roughness. This research focuses on fatigue life analysis of coil spring component. Static linear analysis is conducted on the 3D model of helical coil spring to investigate deformation and stress responses. Modal analysis evaluates the characteristics of vibration, i.e. natural resonance frequencies and corresponding mode shapes. The stress frequency response is generated after performing the harmonic analysis on the spring. Dynamics and performance of spring are analyzed over practical frequency range of 0 Hz to 200 Hz. Fatigue life estimation of vehicle suspension spring is performed using the stress data obtained from frequency response analysis. The stress-life (S-N) approach is utilized for fatigue life assessment of suspension spring. This durability analysis technique can be utilized in the automotive industry to improve reliability of vehicles. The outcome of this research can contribute in analysis and design of modern smart vehicles.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Engineering Mechanics

Department dc:contributor.department

Engineering Science and Mechanics

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

2021

Author dc:creator

• Kumar, Dhananjay

Chairs dc:contributor.committeechair

• Thangjitham, Surot
• West, Robert L.

Committee member dc:contributor.committeemember

• Cramer, Mark S.

• Helical Coil Spring
• Suspension System
• Road Surface Roughness
• Linear System
• Vibration
• Finite element method
• Modal Analysis
• Frequency Response Analysis
• Stress-Life Approach
• Durability
• Fatigue Life.

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Dc Identifier Other

vt_gsexam:32487

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/106624