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    METHODS AND SYSTEMS FOR MODELING APERTURES FOR ADDITIVE MANUFACTURING
    1.
    发明公开
    METHODS AND SYSTEMS FOR MODELING APERTURES FOR ADDITIVE MANUFACTURING 审中-公开

    公开(公告)号：EP4296879A1

    公开(公告)日：2023-12-27

    申请号：EP23165986.3

    申请日：2023-03-31

    申请人： The Boeing Company

    发明人： Horst, Perry T.

    IPC分类号： G06F30/17 ,  B33Y80/00 ,  G10K11/168 ,  G10K11/172 ,  G06F30/15 ,  G06F113/10 ,  G06F119/10 ,  G06F119/18

    摘要： In an example, systems and methods for modeling apertures for additive manufacturing is disclosed. In an example, a computing device includes a processor configured to carry out operations. The operations include generating a computational model of a three-dimensional structure. The three-dimensional structure includes a first group of slats including a first plurality of slats substantially parallel to each other along a first axis and a second group of slats comprising a second plurality of slats substantially parallel to each other along a second axis, wherein the second group of slats intersects the first group of slats. The operations include outputting instructions for manufacturing a substrate in accordance with the generated computation model of the three-dimensional structure. The system includes an additive manufacturing apparatus communicatively coupled to the computing device and configured to receive the instructions and manufacture the substrate in accordance with the generated computation model of the three-dimensional structure.

    AIRCRAFT WIRE ROUTING TO ACCOUNT FOR ELECTROMAGNETIC DISTURBANCES
    5.
    发明公开
    AIRCRAFT WIRE ROUTING TO ACCOUNT FOR ELECTROMAGNETIC DISTURBANCES 审中-公开

    公开(公告)号：EP4105809A1

    公开(公告)日：2022-12-21

    申请号：EP22176727.0

    申请日：2022-06-01

    申请人： The Boeing Company

    发明人： REID, MARISSA ,  GOLDADE, MICAH LEE ,  MARTINEZ, ADOLFO ALEJANDRO ,  NGUYEN, QUANG H.

    IPC分类号： G06F30/15 ,  G06F30/18 ,  G06F113/16 ,  G06F119/10

    摘要： A computing device includes a memory storing instructions. The computing device also includes one or more processors coupled to the memory and configured to execute the instructions to perform operations including obtaining data specifying a wire to be routed; selecting a wire bundle as a candidate for routing the wire; determining bundle parameters; generating a transmission line model to determine an estimated effect of an electromagnetic disturbance on the wire bundle; performing a comparison of the estimated effect of the electromagnetic disturbance to an acceptance criterion; and generating output indicating whether, based on the comparison, a particular routing of the wire satisfies a design specification.

    VEHICLE INTERIOR LOW NOISE OPTIMIZATION DESIGN METHOD, AND SYSTEM
    6.
    发明公开
    VEHICLE INTERIOR LOW NOISE OPTIMIZATION DESIGN METHOD, AND SYSTEM 审中-公开

    公开(公告)号：EP4002188A1

    公开(公告)日：2022-05-25

    申请号：EP20934896.0

    申请日：2020-09-29

    申请人： CRRC Changchun Railway Vehicles Co., Ltd.

    发明人： WANG, Jintian ,  WU, Jian ,  GAO, Yang ,  SUN, Qiang

    IPC分类号： G06F30/15 ,  G06F119/10 ,  G06F111/04

    摘要： A method and a system for optimizing and designing low in-vehicle noise are provided. Sound transmission losses TL i of different regions of a to-be-designed vehicle and sound powers L wj of sound source devices are inputted to an in-vehicle noise simulation-prediction-analysis model; noise prediction are performed based on the in-vehicle noise simulation-prediction-analysis model iteratively with starting with initial sound transmission losses and initial sound powers under a constraint on a total cost for in-vehicle noise reduction, until a predicted noise value L psi satisfying a minimum total cost for in-vehicle noise reduction is outputted; a design parameter of each of the different regions of the to-be-designed vehicle and a design parameter of each of the sound source devices used to obtain the predicted noise value L psi are acquired to design a vehicle. By performing noise prediction iteratively based on the in-vehicle noise simulation-prediction-analysis model, a predicted noise value L psi that has no deviation and satisfies a minimum total cost for in-vehicle noise reduction is obtained, so that the method for optimizing and designing low in-vehicle noise has a short period, low cost and is not prone to deviation. In addition, the method does not require any subjective experience from a designer for vehicle design, and thereby has no subjectivity.

    METHOD TO QUANTIFY TRANSIENT FORCE AND MOMENT
    9.
    发明公开
    METHOD TO QUANTIFY TRANSIENT FORCE AND MOMENT 审中-公开

    公开(公告)号：EP4152200A1

    公开(公告)日：2023-03-22

    申请号：EP22150590.2

    申请日：2022-01-07

    申请人： Hitachi, Ltd.

    发明人： INOUE, Akira

    IPC分类号： G06F30/23 ,  G01H17/00 ,  G06F119/10 ,  G06F119/14

    摘要： In example implementations described herein, there are systems and methods for computation of force and moment in the time domain for a physical system including one or more sensors, which can involve obtaining material properties and first modal properties of the physical system; generating a material property matrix from the material properties and second modal properties from the obtained modal properties; measuring, via the sensors, a set of motion responses of the physical system; obtaining first quantities based on the second modal properties and the material property matrix; calculating a first intermediate matrix from the second modal properties and the set of motion responses; recursively computing, for each time step during measurement of the response, a second intermediate matrix based on (1) the first quantities, (2) the second modal properties, (3) the first intermediate matrix, and (4) a previously computed second intermediate matrix from at least one previous time step; and calculating the force and the moment for each time step during the measurement of the set of motion responses based on the second intermediate matrix and the second modal properties.

    METHOD FOR TAILORING SATELLITE RANDOM VIBRATION AND NOISE TESTS ON THE BASIS OF AREA-TO-MASS RATIO
    10.
    发明公开
    METHOD FOR TAILORING SATELLITE RANDOM VIBRATION AND NOISE TESTS ON THE BASIS OF AREA-TO-MASS RATIO 审中-公开

    公开(公告)号：EP3926508A1

    公开(公告)日：2021-12-22

    申请号：EP20908445.8

    申请日：2020-05-07

    申请人： Beijing Institute Of Spacecraft Environment Engineering

    发明人： XIANG, Shuhong ,  YAN, Tingfei ,  GAO, Haiyang ,  FANG, Guiqian ,  WANG, Haiming ,  ZHANG, Jungang ,  LI, Xinming ,  HU, Yongqiang ,  FENG, Zhenwei ,  WANG, Dong ,  JIA, Ruijin ,  ZHANG, Jingchuan

    IPC分类号： G06F30/20 ,  B64G7/00 ,  G06F119/10

    摘要： Disclosed is a method for tailoring satellite random vibration and noise tests on the basis of area-to-mass ratio, and the method is used to tailor a random vibration test and a noise test in a ground verification test for satellites. The method comprises: first, performing satellite dynamics frequency response simulation analysis according to the random vibration test conditions of the satellite, and obtaining the power spectral density value of the random vibration test condition which corresponds to the corresponding frequency of the maximum frequency response at the key positions of the satellite; then, according to the acoustic test conditions of the satellite, performing simulation analysis of aerospace acoustic vibration response, obtaining the sound pressure level under the acoustic test conditions which corresponds to the corresponding frequency band of the maximum frequency response at the key positions of the satellite, and calculating the frequency bandwidth and sound pressure spectrum density; then calculating the area-to-mass ratio based on Miles Equation; and finally, calculating a break-even coefficient and a break-even point, and tailoring the random vibration test and noisy test according to the break-even point. In this method the contribution of the modal at each stage of the satellite to the vibration is fully considered and the tailoring threshold is quantified according to the dynamic characteristics of different types of satellites, such that the method has the characteristic of strong adaptability.