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45 results about "Physical geometry" patented technology

Method and apparatus for discrete element modeling with a virtual geometry object

One embodiment of the invention provides a computer-implemented method for discrete element modelling of a plurality of discrete elements corresponding to particles and physical geometry elements. The modelling performs a simulation through time of physical interactions of the particles with each other and with the physical geometry elements in a three-dimensional space. The method comprises providing a virtual geometry object comprising a user-defined shape. The virtual geometry object does not undergo physical interaction with the particles or physical geometry elements during the simulation. The method further comprises receiving user-defined parameters for determining the position, orientation and any movement of the virtual geometry object with respect to the three-dimensional space. The method further comprises locating the virtual geometry object in the three-dimensional space during the simulation in accordance with the user-defined parameters and identifying the particles, physical geometry elements and/or physical interactions having a particular relationship with respect to the virtual geometry object. The identified elements can then be analysed by the user, for example to determine the number of particles located at a given time within a specific region of the simulation space (as defined by the virtual geometry object).
Owner:ALTAIR ENG LTD

Reconfigurable, fixtureless manufacturing system and method assisted by learning software

ActiveUS20200130189A1Minimize and eliminate additional hardwareMinimize and eliminate and cablingProgramme-controlled manipulatorTotal factory controlSoftware systemStudy software
Systems and methods for AI assisted reconfigurable, fixtureless manufacturing is disclosed. The invention eliminates geometry-setting tools (hard points, pins and nets—traditionally known as 3-2-1 fixturing schemes) and to replace the physical geometry setting with virtual datums driven by learning AI algorithms. A first type of part and a second type of part may be located by a machine vision system and moved by material handling devices and robots to locations within an assembly area. The parts may be aligned with one another and the alignment may be checked by the machine vision system which is configured to locate datums, in the form of features, of the parts and compare such datums to stored virtual datums. The parts may be joined while being held by the material handling devices or robots to form a subassembly in a fixtureless fashion. The material handling devices are able to grasp a number of different types of parts so that a number of different types of subassemblies are capable of being assembled. The system enables one skilled in the art to develop a product design with self-locating parts that will eliminate and minimize the need for geometry setting dedicated line tools and fixtures. This leads to the development of a manufacturing process that utilizes the industry 4.0 technologies to once again eliminate or significantly reduces the need for geometry setting line tools.
Owner:GHANEM GEORGE K

Three-dimensional simulation calculation method for multi-ring shield lining structure

The invention discloses a three-dimensional simulation calculation method for a multi-ring shield lining structure, and the method comprises the following steps: (S1) constructing a physical geometricmodel through computer modeling software, and the physical geometric model comprises a perforated shield segment, a non-perforated shield segment, in-ring and inter-ring connecting bolts, a joint structure, and an external structure; (S2) establishing a finite element model for the physical geometric model, and determining respective unit types and parameters; (S3) inputting load for the shield segment, the shell unit of the external structure and the beam unit of the joint structure; (S4) setting boundary conditions for the shell unit of the shield segment and the beam unit of the joint structure; and (S5) importing all units, parameters, loads and boundary conditions in the step (S1S4), and carrying out three-dimensional simulation calculation. The method has the advantages that the shield lining, the external connection structure, the perforated connection structure and the connection bolts in the rings and between the rings are respectively constructed by adopting proper units toestablish finite element simulation models for calculation, so that the stress condition of the perforated structure is effectively verified.
Owner:SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE

Steel frame beam column rigid-connection joint node based on socket welding type connection

The invention relates to the technical field of engineering, and discloses a steel frame beam column rigid-connection joint node based on socket welding type connection. The joint node comprises a connecting end, a support end and a socket welding pin, connection end shear-pins are arranged on the right side of a connection end upper flange connector and the right side of a connection end lower flange connector respectively, multiple support end shear-pins are arranged on the left side of a support end upper flange connector and the left side of a support end upper flange connector respectively, two parallel support end shear-pins form a shear groove, the connection end shear-pins are inserted into the shear groove, and the socket welding pins are inserted into gaps between the connectionend shear-pins and the shear groove and installed and fixed with set screws. Accordingly, by means of socket welding type connection, the pulling and pressing force of a beam upper flange plate and abeam lower flange plate is effectively transmitted through physical geometry contact of the socket welding pins, and the machining precision requirements of a component are low; compared with the prior art, installation is convenient, reliability is high, and meanwhile the node and the component achieve detachable reutilization.
Owner:厦门合立道工程设计集团股份有限公司
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