A5021999063- Mechanical stress and fatigue analysis
- Railway Engineering and Dynamics
- Microstructure and Mechanical Properties of Steels
- Metal Alloys Wear and Properties
- Metal and Thin Film Mechanics
- Gear and Bearing Dynamics Analysis
- Fatigue and fracture mechanics
- Diamond and Carbon-based Materials Research
- Structural Load-Bearing Analysis
- Tribology and Lubrication Engineering
- Metallurgy and Material Forming
- Adhesion, Friction, and Surface Interactions
- Advanced materials and composites
- High Temperature Alloys and Creep
- Engineering Structural Analysis Methods
- Civil and Geotechnical Engineering Research
- Total Knee Arthroplasty Outcomes
- Tribology and Wear Analysis
- Orthopaedic implants and arthroplasty
- Cellular and Composite Structures
- Advanced Surface Polishing Techniques
- Force Microscopy Techniques and Applications
- Orthopedic Infections and Treatments
- Railway Systems and Materials Science
- Additive Manufacturing Materials and Processes
Monash University
2011-2023
Railway Technical Research Institute
2018
Australian Regenerative Medicine Institute
2014
Abstract Swing nose crossings (SNXs) have been widely used in heavy haul railways to create a smoother load transfer and hence reduced impact load. However, the current design of SNXs hasn’t fully examined under operating conditions. Additionally, maintenance guidelines for SNX wear-related issues Australian are relatively lacking. As such, this study aims investigate dynamic response wheel–rail contact analyse wear performance an currently railways. Dynamic implicit–explicit finite element...
ABSTRACT Based on the Smith‐Watson‐Topper (SWT) method, a phenomenological approach for multiaxial fatigue analysis, maximum SWT parameter is proposed as single to evaluate stress state in rail head assessing integrity of structure. A numerical procedure calculate from finite element analysis presented and applied case study, where strain fields due wheel/rail rolling contact are obtained three‐dimensional simulation with steady‐state transport technique. The capability method predict crack...
The finite element method was used to simulate indentation tests on a particle embedded in matrix, investigate the influence of properties and depth measured hardness. particle's work-hardening exponent mismatch matrix yield strength have significant A particle-dominated identified, within which nanoindentation hardness agrees very well with true material. Numerical results from simulations wide range material determined that is 5% difference when less than 13.5% radius. can be practice as...
In heavy-haul railway systems, the experience of high traction force rails in curved tracks significantly accelerates rolling contact fatigue crack growth. The overall level and its detailed distribution within a patch can be determined by extent wheel slips different directions, also referred to as creepage. However, few studies have focused on quantifying influence creepage growth behaviour. this paper, numerical method is proposed investigate non-proportional mixed-mode behaviour presence...
Flange tip lift crossings are widely utilized in modern tramlines to replace traditional enhance commuters' comfort and prevent crossing nose failures. However, due altered contact conditions between wheel flanges ramps of crossings, the use flange has led critical issue ramp wear. To resolve this issue, paper investigated dynamic response a during in-service loading, as well resultant wear ramp. With finite element model, local pressure sliding distance were computed subsequently applied...
The ratcheting behaviour of a hypereutectoid high strength rail steel with carbon content 0.85% was experimentally studied under both uniaxial and bi-axial cyclic loadings recently by the authors. To numerically simulate multiaxial steel, Abaqus built-in Lemaitre-Chaboche model applied first in current study. Following documentation, material data for were calibrated from loading test results. Comparing experimental data, provides overpredictions responses loadings. After that, modified...
AbstractThe possibility of using a simple spherical indentation method to measure the averaged mechanical properties metallic foams is investigated in this paper. First, authors numerically validated that Oliver–Pharr can be applied elastic modulus through test with very satisfactory accuracy. Compared solid metals, deform plastically under hydrostatic loading and special plastic behaviour quantified mathematically by parameter, so called shape factor. In paper, present calibrate factor for...
To search for a single parameter to evaluate the stress state in rail head during wheel/rail rolling contact situations, stress-based and strain based phenomenological approaches multiaxial fatigue analysis can be considered as candidates. Following approach, maximum von Mises range applied head. However, only relies on field analysis, which is not sufficient assessing resistance of steel. The Smith-Watson-Topper (SWT) method, strain-based approach considers stress, elastic plastic...
Metallic foams are a new class of functional materials. They have found their application as sandwich cores in lightweight structures and the potential implant materials bioengineering. To characterize mechanical properties these becomes an interesting relevant research topic. In mean time, indentation method has been well accepted simple effective way to measure solid We believe that it is possible study averaged metallic foam from spherical test. this paper, theoretical investigation...