About the Project
Under deformation the opposite faces of the existing cracks interact with each other, altering significantly the stress fields near the crack tips. It takes on special significance for the case of high rate deformations as found in impact and high-frequency dynamics, which covers an extremely wide range of situations, where the contact interaction can change the response substantially. Unfortunately, due to the non-linearity of the problem and substantial computational difficulties, even in the simplest case of isotropic homogeneous body, the overwhelming majority of studies neglect the contact interaction of crack faces in spite of its evident significance. In the case of heterogeneous materials, solutions taking the contact interaction into account are non-existent.
This project will start a new direction in fracture mechanics leading to reassessment of the traditional understanding of strength and fracture of cracked materials under dynamic loading. It will be an interdisciplinary work focused on fracture mechanics problems for cracked heterogeneous materials under impact and high-frequency harmonic loading. Special attention will be paid to the effect of the crack faces contact interaction.
The overall aim of the project is the reassessment of dynamic stress intensity factors for cracked materials under dynamic loading taking the crack closure into account.
The main objectives are:
1. Development of a robust numerical methodology for tackling the contact problems, including development of the iterative solution algorithms.
2. Extensive parametric analysis of the problem.
Candidates should have (or expect to achieve) the UK honours degree at 2.1 or above (or equivalent) in Engineering, Materials or Applied Mathematics. It is essential that the applicant has a background in Fundamentals of Engineering Materials and Stress Analysis
The project is likely to involve a combination of analytical studies and computer modelling including FEM&BEM analysis and MatLab programming, so the appropriate computing skills would be quite beneficial but not compulsory.
• Apply for Degree of Doctor of Philosophy in Engineering
• State name of the lead supervisor as the Name of Proposed Supervisor
• State ‘Self-funded’ as Intended Source of Funding
• State the exact project title on the application form
When applying please ensure all required documents are attached:
• All degree certificates and transcripts (Undergraduate AND Postgraduate MSc-officially translated into English where necessary)
• Detailed CV
Informal inquiries can be made to Dr O Menshykov (email@example.com), with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Postgraduate Research School (firstname.lastname@example.org)
It is possible to undertake this project by distance learning. Interested parties should contact Dr Menshykov to discuss this.
2. Menshykova MV, Menshykov OV, Guz IA. An iterative BEM for the dynamic analysis of interface crack contact problems, Engineering Analysis with Boundary Elements, 2011, 35: 735-749.
3. Menshykov OV, Menshykova MV, Guz IA. Effect of friction of the crack faces for a linear crack under an oblique harmonic loading, International Journal of Engineering Science, 2008, 46: 438–458
Why not add a message here
Based on your current searches we recommend the following search filters.
Based on your current search criteria we thought you might be interested in these.