Fracture behaviour of octet-truss lattices in different orientations
Yifan Li, M.J. Pavier, Harry Coules
Abstract
Octet-truss lattices printed by photopolymer have been used in this research to investigate the orientation effects on fracture behaviours. Octet-truss lattices were printed into CT samples in three orthogonal orientations. The fracture resistances and crack paths for different orientations lattices were obtained and compared. The finite element method with beam element was used in the present study to simulate the fracture response of this structure. Both the load reaction and crack paths were obtained in simulations and compared with the experimental results. The numerical results agree well with the test results.
Topics & Concepts
TrussOctetStructural engineeringFinite element methodMaterials scienceFracture (geology)Orientation (vector space)Beam (structure)Fracture mechanicsMathematicsComposite materialGeometryEngineeringPhysicsBaryonParticle physicsCellular and Composite StructuresMechanical Behavior of CompositesMaterial Properties and Processing