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Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   MARCH 2017 , Volume 16 , Number 12 ; Page(s) 479 To 489.
 
Paper: 

UPDATING BORING BAR'S DYNAMIC MODEL USING PARTICLE SWARM OPTIMIZATION

 
 
Author(s):  FALLAH MOHSEN, MOETAKEF IMANI BEHNAM*
 
* DEPARTMENT OF MECHANICAL ENGINEERING, FERDOWSI UNIVERSITY OF MASHHAD, MASHHAD, IRAN
 
Abstract: 

The present article deals with analytical modeling of boring bar dynamics as well as identification of unknown parameters for the dynamic model. Experimental modal analysis is utilized to measure the Frequency Response Functions (FRFs) of cutting tool. Using the analytical methods of modal analysis theory, dynamic parameters of boring bar (i.e. natural frequencies, damping ratios and mode shapes) are extracted from curve fitting of experimental FRFs. A new physical configuration is proposed, in order to accurately estimate the dynamic response of boring bar in time/frequency domains. In the proposed dynamic model, boring bar is modeled as an Euler-Bernoulli beam with flexible support and tip mass.
The mechanical properties (i.e. modulus of elasticity and density) are considered to be constant along beam length. The flexibility of boring bar's clamping interface is modeled by linear translational/torsional spring elements. Particle Swarm Optimization (PSO) is utilized to identify the unknown parameters of dynamic model. The parameters include translational/rotational clamping stiffness and dimensionless correction factors for boring bar's diameter/tip mass. These parameters directly control the mass/stiffness distribution of proposed dynamic model. The FRFs obtained from updated model of boring bar are compared with experimental FRFs. It is shown that, by optimal selection of unknown parameters, boring bar FRFs can be accurately calculated at any point along its length. Hence, by incorporating the dynamic model of passive/active actuator into the proposed dynamic model, the stability lobes of dampened boring bars can be predicted.

 
Keyword(s): MACHINE TOOL'S DYNAMICS, MODAL ANALYSIS, MODEL UPDATING, PARTICLE SWARM OPTIMIZATION, BORING BAR
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

FALLAH, M., & MOETAKEF IMANI, B. (2017). UPDATING BORING BAR'S DYNAMIC MODEL USING PARTICLE SWARM OPTIMIZATION. MODARES MECHANICAL ENGINEERING, 16(12 ), 479-489. https://www.sid.ir/en/journal/ViewPaper.aspx?id=572838



Vancouver: Copy

FALLAH MOHSEN, MOETAKEF IMANI BEHNAM. UPDATING BORING BAR'S DYNAMIC MODEL USING PARTICLE SWARM OPTIMIZATION. MODARES MECHANICAL ENGINEERING. 2017 [cited 2021July29];16(12 ):479-489. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=572838



IEEE: Copy

FALLAH, M., MOETAKEF IMANI, B., 2017. UPDATING BORING BAR'S DYNAMIC MODEL USING PARTICLE SWARM OPTIMIZATION. MODARES MECHANICAL ENGINEERING, [online] 16(12 ), pp.479-489. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=572838.



 
 
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