Dissertation/Thesis Abstract

The 3D dynamics of the Cosserat rod as applied to continuum robotics
by Jones, Charles Rees, Ph.D., Mississippi State University, 2011, 51; 3466567
Abstract (Summary)

In the effort to simulate the biologically inspired continuum robot's dynamic capabilities, researchers have been faced with the daunting task of simulating—in real-time—the complete three dimensional dynamics of the “beam-like” structure which includes the three “stiff” degrees-of-freedom transverse and dilational shear. Therefore, researchers have traditionally limited the difficulty of the problem with simplifying assumptions. This study, however, puts forward a solution which makes no simplifying assumptions and trades off only the real-time requirement of the desired solution.

The solution is a Finite Difference Time Domain method employing an explicit single step method with cheap right hands sides. The cheap right hand sides are the result of a rather ingenious formulation of the classical beam called the Cosserat rod by, first, the Cosserat brothers and, later, Stuart S. Antman which results in five nonlinear but uncoupled equations that require only multiplication and addition. The method is therefore suitable for hardware implementation thus moving the real-time requirement from a software solution to a hardware solution.

Indexing (document details)
Advisor: Younan, Nicolas H., Jones, Bryan A.
Commitee: Bammann, Douglas, Jones, Bryan A., Shivaji, Rarnasingham, Younan, Nicolas H.
School: Mississippi State University
Department: Electrical and Computer Engineering
School Location: United States -- Mississippi
Source: DAI-B 72/11, Dissertation Abstracts International
Source Type: DISSERTATION
Subjects: Mechanical engineering, Robotics, Acoustics
Keywords: Continuum robotics, Cosserat rod, Finite difference time domain, Numerical methods
Publication Number: 3466567
ISBN: 9781124800370
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