Design of a one-dimensional flexible structure for desired load-bearing capability and axial displacement

Bhattacharya, S and Ananthasuresh, GK and Ghosal, A (2018) Design of a one-dimensional flexible structure for desired load-bearing capability and axial displacement. In: Mechanics Based Design of Structures and Machines, 46 (3). pp. 376-399.

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Abstract

A flexible spine is capable of bearing both transverse and axial external loads. At the same time, it is observed in animals that the spine deforms substantially during their motion and this allows the body to move efficiently and achieve high speeds. This paper deals with the modeling and design of one-dimensional flexible objects for a desired load-carrying capability and axial deflection. The flexible one-dimensional object is modeled as a serial chain of rigid segments connected by one-degree-of-freedom rotary joints with torsional springs and dampers at the joints. For a desired transverse and axial loading, optimization techniques are used to obtain the values of orientation of the rigid segments, the joint stiffness and damping, which gives the desired axial displacement and the shape. It is shown that changing the orientation or the shape of the one-dimensional structure has more effect than changing the stiffness at the joints. Various types of loading and axial deflections are considered and the optimization procedure is illustrated through numerical examples. The response of such a flexible structure to a transient periodic loading is also obtained.

Item Type:	Journal Article
Publication:	Mechanics Based Design of Structures and Machines
Publisher:	Taylor and Francis Inc.
Additional Information:	The copyright for this article belongs to the Taylor and Francis Inc.
Keywords:	Degrees of freedom (mechanics); Dynamic loads; Flexible structures; Optimization; Stiffness, Articulated spine; desired shape; Flexible multibody systems; Load bearing capabilities; Load carrying capability; One-dimensional structure; Optimization techniques; Static and dynamic loading, Loading
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	08 Aug 2022 05:22
Last Modified:	08 Aug 2022 05:23
URI:	https://eprints.iisc.ac.in/id/eprint/75559

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