Abstract
Residual thermal stresses which develop during additive manufacturing processes are often a cause of unwanted component deformation and mechanical failure. We demonstrate that this impairment can in fact be exploited to enhance the design process for shell structures, where bistability is known to emerge in particular instances due to the presence of inelastic stresses. Multistable structures are produced through a single additive manufacturing operation by considering the inherent availability of thermal stresses in certain additive technologies. This concept is demonstrated through an analytical example, numerical simulations and a physical demonstrator produced via selective laser sintering of a titanium alloy. Our findings underline these hitherto untapped capabilities of additive processes and facilitate a deeper understanding of the thermal stresses developed during manufacture.
Original language | English |
---|---|
Article number | 02LT02 |
Pages (from-to) | 1-10 |
Number of pages | 11 |
Journal | Smart Materials and Structures |
Volume | 28 |
Issue number | 2 |
Early online date | 28 Sept 2018 |
DOIs | |
Publication status | Published - 21 Jan 2019 |
Keywords
- additive manufacturing
- bistable structures
- residual stress
ASJC Scopus subject areas
- Signal Processing
- Civil and Structural Engineering
- Atomic and Molecular Physics, and Optics
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Electrical and Electronic Engineering
Fingerprint
Dive into the research topics of 'Additive manufacture of multistable structures'. Together they form a unique fingerprint.Profiles
-
Chris Bowen
- Department of Mechanical Engineering - Professor
- Faculty of Engineering and Design - Associate Dean (Research)
- Centre for Sustainable Chemical Technologies (CSCT)
- Centre for Nanoscience and Nanotechnology
- Institute for Mathematical Innovation (IMI)
- Institute of Sustainability and Climate Change
- Centre for Integrated Materials, Processes & Structures (IMPS)
- IAAPS: Propulsion and Mobility
Person: Research & Teaching, Core staff, Affiliate staff
-
Evros Loukaides
- Department of Mechanical Engineering - Senior Lecturer
- Made Smarter Innovation: Centre for People-Led Digitalisation
- Centre for Digital, Manufacturing & Design (dMaDe)
- Centre for Integrated Materials, Processes & Structures (IMPS)
Person: Research & Teaching, Core staff, Affiliate staff