Prediction of position-dependent stability lobes based on reduced virtual model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU130039" target="_blank" >RIV/00216305:26210/18:PU130039 - isvavai.cz</a>
Result on the web
<a href="https://www.matec-conferences.org/articles/matecconf/abs/2018/70/matecconf_vetomacxiv2018_17005/matecconf_vetomacxiv2018_17005.html" target="_blank" >https://www.matec-conferences.org/articles/matecconf/abs/2018/70/matecconf_vetomacxiv2018_17005/matecconf_vetomacxiv2018_17005.html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/matecconf/201821117005" target="_blank" >10.1051/matecconf/201821117005</a>
Alternative languages
Result language
angličtina
Original language name
Prediction of position-dependent stability lobes based on reduced virtual model
Original language description
The stability of a machining process is directly affected by the dynamic response between the tool and the workpiece. However, as the tool moves along the path, the dynamic stiffness of the machine tool changes. To determine the position-dependent dynamic stiffness accurately, a computationally efficient methodology based on a complex virtual model is presented. The virtual model is assembled using Finite Element Method and is effectively reduced via Component Mode Synthesis and transformation to a State-Space Multi-Input-Multi-Output system. Combination of these techniques allows time-efficient response simulations with significantly less computational effort than the conventional full Finite Element models. Furthermore, they describe the behaviour of the complex structure more accurately opposed to the commonly used models based on a simple 1 Degree-of-Freedom systems. The reduced model is used to simulate dynamic response of the structure to a cutting force during operation. A response is measured on an existing machine to modify the virtual model by incorporating fuzzy parameters, such as damping. The stability regions are calculated for variable positions, resulting in position-dependent lobe diagrams. The presented approach can be used to create a map of stable zones to predict and prevent unstable behaviour during operation.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
<a href="/en/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
14th International Conference on Vibration Engineering and Technology of Machinery, VETOMAC 2018 Proceedings
ISBN
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ISSN
2261-236X
e-ISSN
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Number of pages
6
Pages from-to
1-6
Publisher name
EDP Sciences
Place of publication
Lisbon, Portugal
Event location
Lisbon
Event date
Sep 10, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000470906900106