SYSTEMS AND METHODS OF HIERARCHICAL MATERIAL DESIGN FOR ADDITIVE FABRICATION

    公开(公告)号:US20200079022A1

    公开(公告)日:2020-03-12

    申请号:US16507693

    申请日:2019-07-10

    摘要: According to some aspects, a method of designing a three-dimensional object based on a shape of the object, the object to be fabricated via additive fabrication from a plurality of materials, is provided. The method comprises selecting, for a first volume element of the object, one of the plurality of materials based at least in part on a position of the first volume element within the object, at least one spatial decomposition of the object, the at least one spatial decomposition identifying a plurality of volumetric subregions of the object, and a material composition of at least a first volumetric subregion of the plurality of volumetric subregions, wherein the first volumetric subregion comprises the position of the first volume element.

    TOPOLOGY OPTIMIZATION WITH MICROSTRUCTURES
    5.
    发明申请

    公开(公告)号:US20190001657A1

    公开(公告)日:2019-01-03

    申请号:US15418528

    申请日:2017-01-27

    摘要: System and method for optimizing a three-dimensional model representing a shape of an object to be fabricated from a plurality of materials having known physical properties. The object is designed to exhibit one or more target properties and the three-dimensional model includes a plurality of cells. The system includes at least one processor programmed to receive a data structure including information for a material property gamut of microstructures for the plurality of materials and two or more of the known physical properties of the plurality of materials, and perform a topology optimization process on the three-dimensional model to generate an optimized model, wherein the topology optimization process is constrained based, at least in part, on the information in the received data structure and the one or more target properties.

    Reducing view transitions artifacts in automultiscopic displays

    公开(公告)号:US09967538B2

    公开(公告)日:2018-05-08

    申请号:US14613924

    申请日:2015-02-04

    IPC分类号: G06T19/00 H04N13/00 H04N13/04

    摘要: Automultiscopic displays enable glasses-free 3D viewing by providing both binocular and motion parallax. Within the display field of view, different images are observed depending on the viewing direction. When moving outside the field of view, the observed images may repeat. Light fields produced by lenticular and parallax-barrier automultiscopic displays may have repetitive structure with significant discontinuities between the fields of view. This repetitive structure induces visual artifacts in the form of view discontinuities, depth reversals, and extensive disparities. To overcome this problem, a method modifies the presented light field image content and makes it more repetitive. In the method, a light field is refined using global and local shearing and then the repeating fragments are stitched. The method reduces the discontinuities in the displayed light field and leads to visual quality improvements. Benefits of the method are shown using an automultiscopic display with a parallax barrier and lenticular prints.

    COMPUTATIONAL DISCOVERY OF MICROSTRUCTURE DESIGNS

    公开(公告)号:US20220374569A1

    公开(公告)日:2022-11-24

    申请号:US17749361

    申请日:2022-05-20

    IPC分类号: G06F30/23

    摘要: An approach to designing a structural combination of multiple materials includes determining, using a physical simulator, simulated measurement data for a first plurality of simulation designs. Each simulation design characterizes a structural combination of a plurality of materials. The simulated measurement data for each simulation design provides a simulation of physical qualities of the design. A subset of the simulation designs is selected based on the simulated measurement data for said simulation designs to yield a set of fabrications designs. This set of fabrication designs is provided for fabrication of a set respective physical samples. A set of physical measurements is received for the set of physical samples. Each physical measurement for a physical sample providing measurements a plurality of physical qualities of the sample. The physical simulator is reconfigured using a set of fabrication designs in association with respective physical measurements of physical samples fabricated according to the fabrication designs.

    Topology optimization with microstructures

    公开(公告)号:US10850495B2

    公开(公告)日:2020-12-01

    申请号:US15418528

    申请日:2017-01-27

    摘要: System and method for optimizing a three-dimensional model representing a shape of an object to be fabricated from a plurality of materials having known physical properties. The object is designed to exhibit one or more target properties and the three-dimensional model includes a plurality of cells. The system includes at least one processor programmed to receive a data structure including information for a material property gamut of microstructures for the plurality of materials and two or more of the known physical properties of the plurality of materials, and perform a topology optimization process on the three-dimensional model to generate an optimized model, wherein the topology optimization process is constrained based, at least in part, on the information in the received data structure and the one or more target properties.

    SYSTEMS AND METHODS OF MACHINE VISION ASSISTED ADDITIVE FABRICATION

    公开(公告)号:US20200147888A1

    公开(公告)日:2020-05-14

    申请号:US16526068

    申请日:2019-07-30

    摘要: The present application relates generally to systems and methods for using machine vision to provide information on one or more aspects of an additive fabrication device, such as calibration parameters and/or an object formed by the device or in the process of being formed by the device. According to some aspects, a method is provided for calibrating an additive fabrication device. According to some aspects, a method is provided for assessing at least a portion of an object formed using an additive fabrication device. According to some aspects, a method is provided for fabricating a second object in contact with a first object using an additive fabrication device. According to some aspects, an additive fabrication device configured to perform one or more of the above methods may be provided.