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Investigating nonlinear finite amplitude chatter instabilities using a hardware-inthe-loop simulator
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sahu, Govind Narayan Vashisht, Sarthak Jain, Pulkit Wahi, Pankaj Law, Mohit |
| Copyright Year | 2019 |
| Abstract | This paper presents investigations on nonlinear finite amplitude instabilities (FAI) in turning using a hardwarein-the-loop (HiL) simulator. The HiL simulator, being non-destructive and repeatable, facilitates investigations of nonlinearities prevalent in real cutting processes, which are otherwise difficult to study due to the vagaries of changing machine tool dynamics. We investigate two nonlinearities in this paper – one due to nonlinear cutting force characteristics, and another due to the tool moving out of the cut in the case of large amplitude unstable vibrations. We propose a new time domain surface location storage algorithm to efficiently emulate nonlinearities in the HiL simulator. Regions of FAI are found by performing experiments on the HiL simulator by varying the depth of cut for fixed speeds and static chip thicknesses. Experiments on the HiL simulator provide insights into regenerative cutting process dynamics, thereby facilitating the study of more complex phenomena like in intermittent turning and milling. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://home.iitk.ac.in/~mlaw/Law_UTIS2019.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
