Periodic cellular structure based design for additive manufacturing approach for light weighting and optimizing strong functional parts
OwnerRahul Rai, Jun Wanginventors
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Abstract
A method of additively manufacturing a 3D structure, comprising defining a boundary conditions, load constraints, and a periodic cell structure for lattifying the 3D structure; providing a surrogate FE model predicting a relationship between the boundary conditions, load constraints, periodic cell structure, and 3D orientation angle of the periodic cell structure; optimizing lattification of the 3D structure, according to orientation angle, and a cost function while meeting the load constraints; and additively manufacturing the optimized 3D structure, optimized e.g., for mass and stress concentration under a pre-determined loading condition.
Claims9
A method of optimizing a functional structure, comprising:
- defining a boundary conditions for the functional structure;
- defining loading conditions for the functional structure;
- defining a periodic cell structure;
- and
- optimizing, with at least one automated processor, a spatial orientation of the defined periodic cell structure within the functional structure, according to a computer-implemented finite element model-based optimization, using a predictive finite element model with respect to load response of a standardized lattice, according to at least one criterion of the functional structure lattified with the defined periodic cell structure under the boundary conditions and loading conditions, wherein the predictive finite element model is a surrogate model derived from measurements of physical load response of a standardized lattice.
A method of optimizing a functional structure, comprising:
- defining a boundary conditions for the functional structure;
- defining loading conditions for the functional structure;
- defining a periodic cell structure;
- and
- optimizing, with at least one automated processor, a spatial orientation of the defined periodic cell structure within the functional structure, according to a computer-implemented finite element model-based optimization, using a predictive finite element model with respect to load response of a standardized lattice, according to at least one criterion of the functional structure lattified with the defined periodic cell structure under the boundary conditions and loading conditions, wherein the predictive finite element model is a surrogate model derived from measurements of physical load response of a standardized lattice;
- and
- wherein the predictive finite element model is parameterized based on a shape similarity of the defined periodic cell structure to properties of alternate periodic cell structures, the shape similarity being determined according to a periodic function analysis of a respective periodic cell structure lattice according to a rotation-based 3D shape probability distribution.
Dependencies are inferred from the claim text.