Transient analysis of Cosserat rod with inextensibility and unshearability constraints using the least-squares finite element model Academic Article

abstract

• 2015 Elsevier Ltd. All rights reserved. In this study, time-dependent fully discretized least-squares finite element model is developed for the transient response of Cosserat rod having inextensibility and unshearability constraints to simulate a surgical thread in space. Starting from the kinematics of the rod for large deformation, the linear and angular momentum equations along with constraint conditions for the sake of completeness are derived. Then, the -family of time derivarive approximation is used to reduce the governing equations of motion to obtain a semi-discretized system of equations, which are then fully discretized using the least-squares approach to obtain the non-linear finite element equations. Newton's method is utilized to solve the non-linear finite element equations. Dynamic response due to impulse force and time-dependent follower force at the free end of the rod is presented as numerical examples.

authors

• Reddy, Junuthula

published proceedings

• INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS

author list (cited authors)

• Arbind, A., & Reddy, J. N.

citation count

• 9

complete list of authors

• Arbind, Archana||Reddy, JN

publication date

• March 2016

publisher

• Elsevier  Publisher

published in

• International Journal of Non-Linear Mechanics  Journal

keywords

• Cosserat Rod
• Dynamic Analysis
• Non-linear Transient Response
• Time Dependent Non-linear Least-squares Finite Element Model

Digital Object Identifier (DOI)

• 10.1016/j.ijnonlinmec.2015.10.009

start page

• 38

end page

• 47

volume

• 79

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.ijnonlinmec.2015.10.009