Journal
Scientific and Technical Journal of Information Technologies, Mechanics and Optics
UDK620.191, 629.017
Issue:1 (159)
Download PDF0 Kbyte
Numerical study of SiO2 particle erosion of an aluminum alloy
Annotation
Computational methods used to simulate solid particle erosion have advanced so far being able to estimate partial effect of various processing factors on microlevel, such as particle-surface contact, its particle material, and shape, etc. The published activities taken to study different effects in this aspect for popular aluminium or titanium alloys and steels still have a gap in knowledge addressing some process parameters. The influence of particle rotation and its direction on stress-strain state and wear depth is still understudied. The impact of friction consideration in relatively high-speed contacts should also be studied, as well as the surface layer heating effect which may influence the material strength properties when the temperatures get high. Understanding these effects would increase the predictive ability of the erosion model and its accuracy — which is presented in our 2D simulation study for SiO2 solid particles and a widespread Al6061-T6 alloy. The elastic-plastic and failure properties of the surface material were presented by the Johnson-Cook model. To estimate the influence of multiple impacts on the stress-strain state, three sequential rigid impacts of 250 µm particles at 45° and 155 m/s were modeled. Main attention was driven to the evolution of equivalent von-Mises stresses in the sample after each impact and its dependence on the friction and rotation of particles. It was shown that the effect of friction can be noticed after the first impact, remaining high throughout the simulation. Whereas the influence of rotation direction at 1000 rpm was noticeable after the second impact and tended to increase after the third impact. It is assumed that for other 6000 series aluminium alloys being eroded by spherical SiO2 particles with differing diameters the erosive behavior would keep. However, future studies should be addressed to the analyzing of non-spherical particles rotation, consideration of particle deformation, and to studies of these parameters including more impacts and different contact properties in complex.
Keywords
Постоянный URL
Articles in current issue
- Multispectral optoelectronic system
- Study of the influence of laser wavelength on the dichroism effect in ZnO:Ag films
- Direct laser thermochemical writing on titanium films for rasterized images creation
- Algorithms of direct output-feedback adaptive control of a linear system with finite time tuning
- Large language models in information security and penetration testing: a systematic review of application possibilities
- Usage of polar codes for fixed and random length error bursts correction
- Efficient sparse retrieval through embedding-based inverted index construction
- Method of semantic segmentation of airborne laser scanning data of water protection zones
- Directional variance-based algorithm for digital image smoothing
- DAS signal modeling using the generative adversarial neural network technique
- Multidimensional trajectory planning algorithm for a 5D printer slicer
- Scheduling distributed computations in non-deterministic systems
- Enhancing and extending CatBoost for accurate detection and classification of DoS and DDoS attack subtypes in network traffic
- Detection of L0-optimized attacks via anomaly scores distribution analysis
- An approach to solving the problem of geomagnetic data scarcity in decision-making support
- Construction of matched distance function for simple Markov channel
- Application of the dynamic regressor extension and mixing approach in machine learning on the example of perceptron
- WaveVRF: post-quantum verifiable random function based on error-correcting codes