Structural-Acoustic Analysis with ABAQUS L4 .4 Introduction ? Structural-acoustic coupling – If the acoustic medium adjoins a structure, structural-acoustic coupling occurs at the interface. – The pressure field in the acoustic medium creates a normal surface traction on the structure. – The ...
42、Abaqus/CAEUsage:Step module:StepCreate:Frequency:Basic:Eigensolver:SubspaceStructural-acoustic couplingStructural-acoustic coupling affects the natural frequency response of systems. In Abaqus only the Lanczos eigensolver fully includes this effect. In Abaqus/AMS and the subspace eigensolver the eff ...
L4.4Structural-AcousticAnalysiswithABAQUS Introduction •Structural-acousticcoupling –Iftheacousticmediumadjoinsastructure,structural-acousticcoupling occursattheinterface. –Thepressurefieldintheacousticmediumcreatesanormalsurface tractiononthestructure.
*Step, name=Step-1, nlgeom=NO, perturbation *Frequency, eigensolver=Lanczos, sim, acoustic coupling=on, normalization=mass 15, , , , , **定义模态分析,提取前15阶模态 ** ** BOUNDARY CONDITIONS ** *BOUNDARY 1636151,1,6,0.0 1636150,1,6,0.0 **定义约束 *OUTPUT, FIELD *NODE OUTPUT U, *...
materials can be used.Acoustic medium properties can include volumetric drag to model wave attenuation due to losses.Impedance conditions can be defined on boundaries of acoustic fluids.Structural-Acoustic Analysis with ABAQUSGeneral CapabilitiesAcoustic-structural interactionsUse TIE constraints for coupling....
(1)Coupling type(耦合类型),用于选择耦合的类型。 Kinematic(运动):用于指定运动耦合约束,如图3-74(a)所示,约束区域内的耦合节点相对于约束控制点发生刚体运动。 图3-74 “编辑约束”对话框 Distributing(分布):用于指定分布耦合约束,包括Continuum distributing(连续分布)和Structural distributing(结构分布),约束区域...
Acoustic analysis(声学分析) Coupled problems(耦合问题) –Thermo-mechanical(热固) –Thermo-electrical(热电) –Piezoelectric(压电) –Pore fluid flow-mechanical(孔隙流动) –Thermo-mechanical mass diffusion(热-固-质量扩散) –Shock and acoustic-structural(冲击和声固耦合) ...
(AC3D4,AC3D8R)Structural-AcousticAnalysiswithABAQUSAcousticElementTypesAcoustic-structuralinterface(ASI)couplingelements(ABAQUS/Standardonly):Providethecouplingeffectsbetweenanacousticmeshandastructuralmesh.Canbedefinedtwodifferentways:UsercanexplicitlycreateASIelements.UsercanallowASIelementstobegeneratedinternallyand...
Use the following option to account for structural-acoustic coupling during the frequency extraction: HYPERLINK http://fea_wangxin:2080/v6.10/books/key/key-link.htm \l usb-kws-hfrequency \t v610keywin *FREQUENCY, EIGENSOLVER=LANCZOS, ACOUSTIC COUPLING=ON (default if the SIM architecture is ...
Structural-Acoustic Simulation Coupled Eulerian-Lagrangian Simulation The Coupled Eulerian-Lagrangian (CEL) approach in Abaqus allows engineers and scientists to simulate problems where the interaction between structures and fluids is important. This capability does not rely on coupling multiple software produc...