A novel method for prediction of truss geometry from topology optimization. (January 2017)

• Record Type: Journal Article
• Authors: Mandhyan, A.; Srivastava, Gaurav; Krishnamoorthi, S.
• Is Part Of: Engineering with computers. Volume 33:Number 1(2017)
• Page Start: 95
• Page End: 106
• Publication Date: 2017-01
• Subjects: Topology optimization -- Truss-like structures -- Grayscale image -- Optimal truss shape; Engineering design -- Data processing -- Periodicals; Computer-aided design -- Periodicals; Conception technique -- Informatique -- Périodiques; Conception assistée par ordinateur -- Périodiques; Electronic journals; 620.00285
• DOI: 10.1007/s00366-016-0474-x
• Languages: English
• ISSNs: 0177-0667

Abstract

Abstract An important task in designing a truss structure is to determine the initial configuration of the truss. In the absence of an efficient optimization technique, the selection of initial geometry is based on a trial and error procedure or standard truss configurations or past experiences. In this work, a fully automated algorithm is proposed which can be used to predict initial truss geometry from the grayscale images obtained from topology optimization of design domain. It predicts the locations of joints and the connectivity of members. It also estimates the approximate cross-sectional areas of the members. The interpreted truss geometry can be modified or directly used for structural analysis and design. Numerical examples are presented to demonstrate the functioning of the algorithm under various scenarios. The developed algorithm has been implemented as part of a web-based truss design application, previously developed by the same authors.