Study on static and dynamic characteristics of nettle–polyester composite micro lathe bed
| Autor: | N. Mahendrakumar, P. R. Thyla, J Jayachandresh, P. V. Mohanram, C. Raja Kumaran |
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| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Damping ratio Bending (metalworking) business.industry Mechanical Engineering Modal analysis Composite number Natural frequency 02 engineering and technology Structural engineering engineering.material 021001 nanoscience & nanotechnology Finite element method Polyester 020901 industrial engineering & automation engineering General Materials Science Cast iron Composite material 0210 nano-technology business |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. 233:141-155 |
| ISSN: | 2041-3076 1464-4207 |
| DOI: | 10.1177/1464420716663568 |
| Popis: | Nowadays, natural fibre-reinforced composites find applications in almost all engineering fields. This work is an attempt to realise improvement in dynamic characteristics of micro lathe bed using Himalayan nettle (Girardinia heterophylla) polyester (NP) composite as an alternate material. In order to study and validate the improvements envisaged, a cast iron micro lathe bed is considered as reference. Numerical (FE) model of the cast iron micro lathe bed was developed and validated through experimental static and modal analysis. Finite element analysis of the micro lathe bed with the existing cast iron material as well as with nettle–polyester composite as alternate material was also carried out using worst case cutting forces, and based on the relative performances, the need for form design modification for the proposed material was identified. To enhance the bending and torsional stiffness of the nettle–polyester composite lathe bed, various cross sections and rib configurations were studied and the best among them was identified and the same was implemented in the nettle–polyester composite micro lathe bed design. Finite element analysis of the newly designed nettle–polyester composite micro lathe bed was performed and the improvements in dynamic characteristics were evaluated. The newly designed nettle–polyester composite micro lathe bed was fabricated and the predicted enhancement in static and dynamic characteristics was verified experimentally. The studies indicated that nettle–polyester composite could be considered as a suitable alternate to cast iron structures in machine tools. |
| Databáze: | OpenAIRE |
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