Visionneuse

Date_TXT

London: Spon press, 2012

Auteur

Zhong You, Yan Chen

Sujet

Structures flexibles; Constructions; Équipement mécanique

Type de document

Livre

Description :

This book focuses on the second category. The term Motion Structures
is adopted to represent this branch of the deployable structure family
owing to the existence of internal mechanisms.
A mechanism in machine theory, which is referred to as a conventional
mechanism hereafter, is commonly identified as a set of moving or working
parts used essentially as a means of transmitting motions or controlling
movement of one part relative to another. It is often assembled from gears,
cams and linkages, though it may also contain other specialised components, e.g. springs, ratchets, brakes, and clutches, etc. There are close
similarities as well as distinct differences between a motion structure and a
conventional mechanism. First, the primary function of a motion structure
is to have shape alteration essential to practical requirements, rather than
transmitting or controlling motions. Second, as a structure, a motion structure is usually composed of far more parts than a conventional mechanism.