US 2025/0053705 A1Published application

Method and system employing boundary element method with adaptive order for acoustic emission and scattering analysis

AssigneeSiemens Industry Software Inc.

InventorsHadrien Beriot, Onur Atak, Yue Li

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Abstract

The invention relates to a computer-implemented method computer product, computer-readable medium, and system for determining acoustic parameters of an object's (OBJ) emission and/or scattering within a predetermined frequency range (FRG), by applying Boundary Element Method (BEM) to the object, comprising splitting said object's (OBJ) surface into surface elements (ESF) and assigning boundary conditions (BCD) to said surface elements (ESF), further comprising •Providing polynomial shape functions (SFC) over each of said elements (ESF) for mapping geometry and acoustic parameters to said elements (ESF), wherein for each surface element (ESF) the order (SFO) of said shape functions (SFC) is determined by an adaptivity module (ADM), •Assembling the elements (ESF) of said surface by recombining the shape functions (SFC) obtaining a system matrix (SMX), •Solving said system matrix (SMX), •Determining said acoustic parameters (PRT) from said shape functions (SFC).

Claims18

Dependent claims

Computer-implemented method for determining acoustic parameters (PRT) of an object's (OBJ) emission and/or scattering within a predetermined frequency range (FRG), comprising the steps:

(a) Defining said object (OBJ),
(b) Defining a system (SYS) containing said object (OBJ),
(c) Providing boundary conditions (BCD) for said system (SYS) including defining a sound source (SDS),
(d) Applying Boundary Element Method (BEM) to said system (SYS) comprising splitting said object's (OBJ) surface into surface elements (ESF) and assigning said boundary conditions (BCD) to said surface elements (ESF),
characterized by the Boundary Element Method (BEM) including:
(e) Providing polynomial shape functions (SFC) over each of said elements (ESF) for mapping geometry and acoustic parameters to said elements (ESF), wherein for each surface element (ESF) determining the order (SFO) of said shape functions (SFC) by an adaptivity module (ADM),
(f) Assembling the elements (ESF) of said surface by recombing the shape functions (SFC) obtaining a system matrix (SMX),
(g) Solving said system matrix (SMX),
(h) Determining said acoustic parameters (PRT) from said shape functions (SFC).

6 more elements

Dependencies are inferred from the claim text.