(Zuid-Holland), hours per week
Job description
The general aim of this project is to gain a better understanding of contact and friction behavior of rough surfaces with (sub-)micron scale asperities.
The friction force to slide a body relative to another is the product of true contact area between asperities and friction stress. The true contact evolves during the plastic deformation of the asperities, which takes place even under light loading. The friction stress is the outcome of the competition between loss of adhesion between asperities and plastic shearing of asperities. The aim of rough surface modeling is to predict the evolution of the area of contact during loading, the contact pressure and residual stresses as well as friction stress.
There is increasing experimental evidence to suggest that classical theories do not accurately model rough surface contact. The discrepancy between classical predictions and experimental findings is primarily a consequence of size effects in plasticity. When the size of the contacts is comparable to the dislocation source spacing, the discrete nature of plastic flow cannot be neglected. Therefore this research focuses on the discrete nature of plastic flow by using discrete dislocation plasticity simulations. These simulations will enable us to compute the stress state and the deformation under and in the vicinity of the contacts. Prediction of asperity deformation during flattening is crucial in determining the true contact area as well as the friction stress.
Requirements
Required education/skills:We seek candidates with a master degree in mechanical engineering, physics, materials science or a related field. A good computational background is preferred and an interest in modeling the mechanical behavior of materials is required. The candidate will have the opportunity to undertake a short training period at Corus with the objective of carrying out project tasks and transfer knowledge.
Job type: Research / Advising
Workfield(s):
- Research trainees, non-tenured lecturers, researchers(Scientific discipline: Engineering)
Organization
Materials innovation institute M2i
Conditions of employment
Estimated maximum salary per month: eur 2000 - 2500
Employment basis: Temporary for specified period
Duration of the contract: 4 years
Additional Information
Additional information can be obtained through the following link:Application
You can apply for this job before 31-07-2008 (dd-mm-yyyy) by sending your application to:
Postbus 5008
2600 GA Delft
E-mail: hrm@m2i.nl
When applying for this job always mention the vacancynumber MC2.06282.
Job description
The general aim of this project is to gain a better understanding of contact and friction behavior of rough surfaces with (sub-)micron scale asperities.
The friction force to slide a body relative to another is the product of true contact area between asperities and friction stress. The true contact evolves during the plastic deformation of the asperities, which takes place even under light loading. The friction stress is the outcome of the competition between loss of adhesion between asperities and plastic shearing of asperities. The aim of rough surface modeling is to predict the evolution of the area of contact during loading, the contact pressure and residual stresses as well as friction stress.
There is increasing experimental evidence to suggest that classical theories do not accurately model rough surface contact. The discrepancy between classical predictions and experimental findings is primarily a consequence of size effects in plasticity. When the size of the contacts is comparable to the dislocation source spacing, the discrete nature of plastic flow cannot be neglected. Therefore this research focuses on the discrete nature of plastic flow by using discrete dislocation plasticity simulations. These simulations will enable us to compute the stress state and the deformation under and in the vicinity of the contacts. Prediction of asperity deformation during flattening is crucial in determining the true contact area as well as the friction stress.
Requirements
Required education/skills:We seek candidates with a master degree in mechanical engineering, physics, materials science or a related field. A good computational background is preferred and an interest in modeling the mechanical behavior of materials is required. The candidate will have the opportunity to undertake a short training period at Corus with the objective of carrying out project tasks and transfer knowledge.
Job type: Research / Advising
Workfield(s):
- Research trainees, non-tenured lecturers, researchers(Scientific discipline: Engineering)
Organization
Materials innovation institute M2i
Conditions of employment
Estimated maximum salary per month: eur 2000 - 2500
Employment basis: Temporary for specified period
Duration of the contract: 4 years
Additional Information
Additional information can be obtained through the following link:Application
You can apply for this job before 31-07-2008 (dd-mm-yyyy) by sending your application to:
Postbus 5008
2600 GA Delft
E-mail: hrm@m2i.nl
When applying for this job always mention the vacancynumber MC2.06282.
