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Optimization of mechanical loaded lattice structures by orientating their struts along the flux of force

: Reinhart, Gunther

Teti, Roberto (Chairman); Westkämper, Engelbert (International Program Committee) ; International Academy for Production Engineering -CIRP-, Paris; University of Naples Federico II, Department of Manufacturing Technology and Systems; Fraunhofer Joint Laboratory of Excellence on Advanced Production Technology -Fh-J LEAPT-:
CIRP ICME 2012, 8th Conference on Intelligent Computation in Manufacturing Engineering. CD-ROM : Innovative and Cognitive Production Technology and Systems. 8th CIRP Conference, 18-20 July 2012, Ischia (Naples), Italy
Naples, 2012
6 S.
International Conference on Intelligent Computation in Manufacturing Engineering (ICME) <8, 2012, Ischia>
Fraunhofer IWU ()
structure; design method; algorithm

Additive Layer Manufacturing (ALM) processes like Selective Laser Melting (SLM) show a great potential for the fabrication of lightweight components due to their high geometric flexibility. Thereby, especially mesoscopic approaches feature some very advantageous properties like high stiffness and strength combined with low masses. A periodical build-up of these structures is not ideal, because of the appearance of unfavorable load cases like bending or shearing inside the struts. Rather, only push and pull forces should appear. To reach this state, the course of the structure has to be adapted in such a way, that bending forces do not appear or at least can be minimized. This can be achieved by the orientation of the single struts along the flux of force inside the available design space. For this purpose, a procedure has been developed, which makes it possible to adapt the course of a structure to the flux of force inside a given part.