A numerical analysis of compressive residual stresses in cold gas dynamic spray (CGDS) deposition method
| Autor: | Tien-Chien Jen, Peter Ozaveshe Oviroh, Sunday Temitope Oyinbo |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science 02 engineering and technology Plasticity 021001 nanoscience & nanotechnology Residual 01 natural sciences Stress (mechanics) Residual stress 0103 physical sciences Deposition (phase transition) Particle Composite material Elasticity (economics) 0210 nano-technology Softening |
| Zdroj: | Materials Today: Proceedings. 44:1931-1938 |
| ISSN: | 2214-7853 |
| Popis: | This study presented a finite element approach of a numerical model to investigate the profile of the deformed sprayed particles and the compressive residual stresses analysis at the interfacial zone of particle and substrate impact using cold gas dynamic spray (CGDS). Elastic, isotropic hardening and Johnson-Cook material model were selected to account for elasticity, plasticity and stress softening behaviour of the ductile materials as the material model formulations respectively. The Lagrangian approach was used to analyze in detail the material deformation behaviour during impact, contact problems of single-particle impact process and the outputs of equivalent plastic strain and temperature to achieve a qualitative understanding of cold gas dynamic spray contact process of cold sprayed particle on the substrate. The evolution of residual compressive stresses during impact was also analyzed for multiple-particles impact process using the Lagrangian approach. It can be observed that the compressive residual stresses increase by increasing the preheating temperature and particle initial impact velocity. |
| Databáze: | OpenAIRE |
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