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1. (WO2019062346) METHOD AND APPARATUS FOR MODELING AND DESIGNING MULTI-DIMENSIONAL CELLULAR STRUCTURES FOR ADDITIVE MANUFACTURING
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Pub. No.: WO/2019/062346 International Application No.: PCT/CN2018/099961
Publication Date: 04.04.2019 International Filing Date: 10.08.2018
IPC:
G05B 19/4099 (2006.01) ,G06F 17/50 (2006.01)
G PHYSICS
05
CONTROLLING; REGULATING
B
CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19
Programme-control systems
02
electric
18
Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
4097
characterised by using design data to control NC machines, e.g. CAD/CAM
4099
Surface or curve machining, making 3D objects, e.g. desktop manufacturing
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
17
Digital computing or data processing equipment or methods, specially adapted for specific functions
50
Computer-aided design
Applicants:
THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY [CN/CN]; Clear Water Bay, Kowloon, Hong Kong, CN
Inventors:
WANG, Michael Yu; CN
WANG, Yiqiang; CN
Agent:
TEE&HOWE INTELLECTUAL PROPERTY ATTORNEYS; Hongxia GU 10th Floor, Tower D, Minsheng Financial Center, 28 Jianguomennei Avenue, Dongcheng District, Beijing 100005, CN
Priority Data:
62/606,51227.09.2017US
Title (EN) METHOD AND APPARATUS FOR MODELING AND DESIGNING MULTI-DIMENSIONAL CELLULAR STRUCTURES FOR ADDITIVE MANUFACTURING
(FR) PROCÉDÉ ET APPAREIL DE MODÉLISATION ET DE CONCEPTION DE STRUCTURES CELLULAIRES MULTIDIMENSIONNELLES POUR FABRICATION ADDITIVE
Abstract:
(EN) Modeling, constructing, and designing conformal cellular structures with spatially variable and graded microstructures that have full geometric continuity is disclosed, which includes defining a global structural domain, where the microstructures are generated for a global mesh, defining a unit structure as a base cell using a level set function, which allows for beams, trusses, shells, and solids, transforming and mapping the base cell into each element of the global mesh using an isoparametric transformation, which creates a conformal cellular structure in accordance with a set of requirements on distribution of material and/or mechanical properties, and applying a global cutting function to guarantee geometric continuity in connections on the common face of any two neighboring cells of the structure. As a result, more complex geometric shapes and features can be generated at the cell level, while maintaining the specified geometric connectivity across the cells of the structure.
(FR) L'invention concerne la modélisation, la construction et la conception de structures cellulaires conformes au moyen de microstructures nivelées et variables spatialement présentant une continuité géométrique complète, consistant à définir un domaine structurel global dans lequel les microstructures sont crées pour un maillage global, à définir une structure unitaire comme cellule de base au moyen d'une fonction d'ensemble de niveaux permettant à des faisceaux, des treillis, des coques et des solides de transformer et de mettre en correspondance la cellule de base dans chaque élément du maillage global au moyen d'une transformation isoparamétrique, ce qui crée une structure cellulaire conforme en fonction d'un ensemble d'exigences relatives à la répartition de matériau et/ou aux propriétés mécaniques, et à appliquer une fonction de coupe globale pour garantir la continuité géométrique de raccords sur la face commune de deux cellules voisines quelconques de la structure. Ainsi, des caractéristiques et des formes géométriques plus complexes peuvent être créées au niveau cellulaire, tandis que la connectivité géométrique spécifiée est maintenue sur les cellules de la structure.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)