Generation of tooth profile for roots rotor based on virtual linkage associated with Assur group

Cai, Y, Yao, L and Wei, G ORCID: 2016, 'Generation of tooth profile for roots rotor based on virtual linkage associated with Assur group' , Advances in Mechanical Engineering, 8 (12) , pp. 1-8.

PDF - Published Version
Available under License Creative Commons Attribution.

Download (1MB) | Preview


This article, for the first time, presents the generation of Roots rotor tooth profiles based on an Assur-group-associated virtual linkage method. Taking the original Roots rotor as an example, structure and geometry of the Roots rotor are introduced, and based on the principle of inversion, an equivalent virtual linkage is identified for generating dedendum tooth profile of the rotor. Using linkage decomposition associated with elemental Assur groups, algorithm for computing the tooth curve is constructed leading to the explicit expression of rotor profile and the corresponding numerical simulation, verifying the validity of the proposed approach. For demonstration purpose, the virtual linkage method is then extended to the generation of tooth profiles for the variants of Roots rotors with arc-cycloidal curves and arc-involute curves. Integrated with computer-aided design, computer-aided engineering and computer-aided manufacturing software platforms, as well as the three-dimensional printing technology, this article provides an efficient and intuitive approach for Roots rotor system design, analysis and development.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Advances in Mechanical Engineering
Publisher: Sage
ISSN: 1687-8132
Related URLs:
Funders: The VC ECR scholarship
Depositing User: Dr Guowu Wei
Date Deposited: 09 Jan 2017 09:22
Last Modified: 28 Aug 2021 16:32

Actions (login required)

Edit record (repository staff only) Edit record (repository staff only)


Downloads per month over past year