lms virtual.lab在电机上的解决方案 lms virtual.lab solution for...
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LMS Virtual.Lab Solution for
Electrical Motor
LMS Virtual.Lab在电机上的解决方案
孙新波: 18616288811
西门子工业软件(北京)有限公司
原LMS
20XX-XX-XX
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Page 2 Siemens PLM Software
目录
目录
1、LMS产品及Virtual. Lab 介绍
2、振动/流体噪声仿真分析解决方案介绍
2.1、源的确定
2.2、系统级建模解决方案
2.3、声学仿真分析
2.4、强大的后处理功能
3、LMS在提升工作效率上可以提供的解决方案
4、应用案例
20XX-XX-XX
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Page 3 Siemens PLM Software
Hybrid TEST/CAE Partner
1.000 people
Horizon 20XX
1995 1980
TEST-NVH Partner
200 people
LM
S 2
012
LMS, a track record of delivering transformational
solutions
Transforming is …
Addressing the future problems
of our CUSTOMERS
Leading Partner in
Test and Mechatronic Simulation
1200 people
1995 2010
Engineering
the passion
LM
S 2
01
0
LM
S t
he
Ro
ots
FU
TU
RE
Systems Engineering
to drive PLM &
to invent Transformational
Industry Solutions
2010 2020
Horizon 2010 2030
Transforming is …
Addressing the future problems
of our SOCIETY
20XX-XX-XX
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New LMS-Siemens – From 2014 onward...
LMS Siemens STS
Siemens PLM
20XX-XX-XX
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New LMS-Siemens Portfolio
20XX-XX-XX
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Page 6 Siemens PLM Software
Presenting Siemens STS
LMS Test.Lab – Test Based Engineering
LMS Imagine.Lab – Mechatronic System Simulation
Modal – NVH – Acoustics – Durability
Laboratory
Mobile
Design - CAD
Multi-physics
Modeling
LMS SCADAS
Controls
System
Synthesis
System Data Management
LMS
Test.Xpress
En
gin
eeri
ng
Serv
ices
LMS Virtual.Lab 3D Performance Simulation
LMS Samtech Structural Analysis
Dep
loym
en
t S
erv
ices
20XX-XX-XX
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LMS Virtual.Lab Value Proposition An integrated environment for functional performance engineering
Structures NVH-Acoustics Durability Motion Optimization Hybrid Simulation
Engineering the right product…
Simulate real-life behavior of mechanical designs
Rich Attributes
Deliver a balanced performance
Multi-Attributes
Tackle the root causes of design weak spots
Engineering
… Accelerating the development process
Accelerate model creation in a unified environment
One model
Capture and automate simulation processes
Automation
Combine the best of testing and 1D/3D simulation
Hybrid
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Page 8 Siemens PLM Software
Ease of Use
Easy to operate for
everyday tasks
LMS Virtual.Lab Acoustics and NVH
Reaching the goal: 3 key values
Realistic Modeling
Capture reality, both in
types of sources and
transfer
Performance
Get results fast by state-
of-the-art solver and
modeling technology
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LMS产品介绍
LMS Tec.Manager
试验和仿真数据管理
9 copyright LMS International - 2012
LMS工程咨询
过程集成 & 工程咨询服务
LMS Test.Lab
物理试验系统的市场标杆
LMS Virtual.Lab
虚拟仿真领域的技术领跑者
系统级 (1维) 仿真分析
Imagine.Lab AMESim
LMS SAMCEAF
虚拟仿真领域的技术领跑者
3D
1D
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Stru
ctu
re
Desktop
NVH仿真分析解决方案 LMS Virtual.Lab 平台
Mo
tion
Corre
latio
n
Aco
ustic
s
Du
rab
ility
No
ise
& V
ibra
tion
Optimization
Structures
LMS Virtual.Lab Structures 结构
通用有限元前后处理
LMS Virtual.Lab Motion 多体动力学
运动学/动力学仿真
LMS Virtual.Lab Durability 疲劳
强度和疲劳分析
LMS Virtual.Lab Acoustics 声学
声学分析
LMS Virtual.Lab Noise & Vibration 系统振动噪声预测
系统级振动噪声预测和混合建模
LMS Virtual.Lab Correlation 相关性分析
仿真模型校验
LMS Virtual.Lab Desktop 桌面
LMS Virtual.Lab 运行环境
LMS Virtual.Lab Optimization 优化
LMS Virtual.Lab集成数值优化技术
LMS Virtual.Lab Structures
CAD Meshing Solver
Driving
Post-
Processing
专项属性分析(声学、声振、多体、疲劳、相关性)
Mesh based
Pre-processing
LMS Virtual.Lab
Analysis
definition
优化
SE
A+
LMS SEA+ 高频振动噪声模块 (InterAC)
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LMS Virtual. Lab 平台的作用
1、Virtual. Lab 为客户提供一套三维仿真平台:
• 1. Virtual. Lab Motion 或 Image. Lab(与Virtual. Lab具有相同的界面接口)提供激
励源;
• 2. 通过在Virtual. Lab的平台下,驱动其他相关的结构分析软件,实现机械产品从多
体分析(源/载荷)、结构分析(振动响应)、声学分析(声载荷/声响应),疲劳
寿命到优化的全过程设计。
2、Virtual. Lab与Test. Lab或其他测试系统结合使用的作用:
• 1. 理论模型修正:通过实验模型与虚拟模型的相关性分析修正虚拟模型,从而提高
模型的仿真精度;
• 2. 混合建模:通过实验数据(早期产品数据)与虚拟模型(新部件的仿真数据)的
混合建模方式,为客户的产品开发在早期提供较准确的预测结果,并为产品的设计
提供正确的修改方向。
• 3. 反问题求解:通过实验数据,可以进行反推结构的表面振动特性,从而为结构的
激励源的搜索提供依据;
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LMS Virtual. Lab可以解决什么问题?
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管路声学问题
——进排气消声器
振动声学问题
——发动机声学问题 & 其他振动声学问题
流体声学问题
——管路/外场流体声学问题
大规模声学问题
——大尺度/多工况声学问题
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电机噪声用户:
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2、振动/流体噪声仿真分析解决方案介绍
14 copyright LMS International - 2007
Attachment & Mount
Air-Structure-Air
Noise
Air Borne Noise
激励载荷:
结构激励及流体激励
Structure Borne Noise
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NVH仿真分析流程:更强大的前后处理功能
15 copyright LMS International - 2007
Speed-optimized acoustic analysis
Fast full-system model
Response analysis
Reliable FE model
Insights and design guidance
Loads (Test
or MBD)
N&V
Response
Forced
Response
Contribution
analysis
No
Modifications &
Optimization
Full System
Model
Model
Assembly and
Synthesis
Component
Test Model
Component
FE model
Correlation
& Updating
Component
CAD model
Component
Test model
Acoustic
Radiation
Target
met?
Acoustic
response
Target
met?
Derive
surface
mesh
Component
FE model
No
(M)ATV
Create
acoustic
BEM model
Fast
modifications Mesh-based
modifications Geo-based
modifications
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电机的NVH问题:源——传递函数——响应
16 copyright LMS International - 2007
1)静不平衡
2)动不平衡
3)EMF转子载荷
1)EMF定子载荷
电机安装匹配
(结构振动传递)
电机噪声
直接辐射
Source 1 Source-2 Source-3
Flux与VLA之间
的联合仿真
VL-Motion与
VL-Acoustic之
间的联合仿真
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2.1 Source1:流体激励——风扇噪声
17 copyright LMS International - 2007
LMS Virtual.Lab Acoustics
CFD
计算
CFD数据后处理
时域 频域转化
根据流畅数据
自动生成流体声源
声学
计算 流体声学
计算结果
计算流体动力学(CFD)软件: PowerFLOW (EXA)
Star-CD (CD)
Fluent
CFX
SC Tetra
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Page 18 Siemens PLM Software
气动工具噪声测试及声学模型
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气动工具测点布置方案 气动工具模拟布置测点:
由于测点圆心不好确定,因此采用矩形体包裹的方式或半径为4.234m半径的球来模拟,然后取相对位置较近的点作为测点仿真结果!
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SAS—CFD分析结果:
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BPF声学仿真分析结果
工况描述:
• 电动工具风扇转速:15150r/min;
20 copyright LMS International - 2005
1BPF=1262.5Hz 2BPF=2525Hz
测点 1 2 3 4 5 6
试验 76.5 67.1 75.7 66.9 79.8 76.1
仿真 75.4 67.9 76.0 64.7 80.8 79.2
误差 1.4% 1.2% 0.4% 3.3% 1.2% 4.1%
测点 1 2 3 4 5 6
试验 76.9 67.8 71.0 69.9 65.3 73.4
仿真 78.8 81.3 70.8 70.0 72.4 74.6
误差 2.5% 20% 0.3% 0.1% 11% 1.6%
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2.1、Source2:结:激励
21 copyright LMS International - 2007
Speed-optimized acoustic analysis
Fast full-system model
Response analysis
Reliable FE model
Insights and design guidance
Loads (Test
or MBD)
N&V
Response
Forced
Response
Contribution
analysis
No
Modifications &
Optimization
Full System
Model
Model
Assembly and
Synthesis
Component
Test Model
Component
FE model
Correlation
& Updating
Component
CAD model
Component
Test model
Acoustic
Radiation
Target
met?
Acoustic
response
Target
met?
Derive
surface
mesh
Component
FE model
No
(M)ATV
Create
acoustic
BEM model
Fast
modifications Mesh-based
modifications Geo-based
modifications
20XX-XX-XX
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Page 22 Siemens PLM Software
structure borne noise—Load Identification
ts XXKF
,jjj XSQ 22 copyright LMS International - 2009
xt
xs
Mount Stiffness Method
- Operational Vibrations on both ends of the mounts are measured
- Mount stiffness FRFs measured in lab
Inverse Matrix Method
- Operational Vibrations are measured
- FRFs measured in lab
Acoustic Source Quantification
Retrieve operational loading:
Measured operational response
Measured FRFs in lab
Force estimation methods TEST
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2.1.2、CAE建模解决方案
23 copyright LMS International - 2007
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2.1.3 Source3:电磁力激励
Obtaining realistic Loads from Eletro-Magnetic
Simulation software
25 /45 copyright LMS International - 2012
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Solve: Which are the Modal Participation Factors (MPF) needed to match the operational response? Expand: Use the MPF solution to expand the solution to the full engine surface
Obtaining Loads/Response through Modal Expansion Combine real life test data with FE modes
Operational Deflection Shape Measured and mapped to reduced
set of FE nodes
FE modes
Solve + Expand
Use as Acoustic Boundary Conditions to predict Acoustic Response
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Obtaining Loads/Response through Inverse
Numerical Acoustics Acoustic Transfer Vectors - ATVs
One row in the Acoustic Transfer Function matrix represent the pressure in one field point due to a unit normal velocity in all N nodes of the acoustic model The ATV matrix represents the acoustic transfer relations between all NF acoustic field points and the N surface normal velocities ATVs can be computed based on BEM / FEM formulations ATV based formulation forward Numerical Acoustics: compute p in NF field points, given v at the surface in N points of the acoustic model
27 /45 copyright LMS International - 2012
1 acoustic field point
all acoustic field points
Vn
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激励源结论:
1、实验方法:
• 结构激励载荷;
• 振动噪声激励载荷;
• 纯声学的激励载荷;
2、仿真方法:
• CFD 仿真分析方法;
• 纯声学仿真分析方法;
• 多体动力学仿真方法;
• 电磁仿真分析获取电磁力;
3、实验——仿真方法:
• 获取结构表面振动:声学反问题求解、模态扩展;
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2.2、系统级模态及传函仿真分析
29 copyright LMS International - 2007
Speed-optimized acoustic analysis
Fast full-system model
Response analysis
Reliable FE model
Insights and design guidance
Loads (Test
or MBD)
N&V
Response
Forced
Response
Contribution
analysis
No
Modifications &
Optimization
Full System
Model
Model
Assembly and
Synthesis
Component
Test Model
Component
FE model
Correlation
& Updating
Component
CAD model
Component
Test model
Acoustic
Radiation
Target
met?
Acoustic
response
Target
met?
Derive
surface
mesh
Component
FE model
No
(M)ATV
Create
acoustic
BEM model
Fast
modifications Mesh-based
modifications Geo-based
modifications
20XX-XX-XX
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Page 30 Siemens PLM Software
电机的NVH问题:源——传递函数——响应
30 copyright LMS International - 2007
1)静不平衡
2)动不平衡
3)EMF转子载荷
1)EMF定子载荷
电机安装匹配
(结构振动传递)
电机噪声
直接辐射
Source 1 Source-2 Source-3
Flux与VLA之间
的联合仿真
VL-Motion与
VL-Acoustic之
间的联合仿真
20XX-XX-XX
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Page 32 Siemens PLM Software
2.2.1 结构动力学分析——结构模态分析
32 copyright LMS International - 2007
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2.2.1、模态特性验证
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LMS Virtual.Lab
LMS Virtual.Lab Correlation
Systematically improve simulation practices
Direct access to standard FE and Test data formats:
Unique export to LMS Test.Lab
A powerful and straightforward User Interface
In one integrated environment
More productive testing
Benefits
Compare and validate FE models based on Test data
Identify the cause of modeling errors
Define system targets and improve simulation models
Guarantee the validity of simulations, update FE
models and improve measurements
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Page 35 Siemens PLM Software
LMS Virtual.Lab
LMS Virtual.Lab Optimization
Quickly explore the Design Space
Easy access to advanced optimization technology For ALL and ACROSS Virtual.Lab applications
Fast and easy to use from within the Virtual.Lab environment
Benefits
Offers you more insight in your design
Improves and optimizes your design
Assesses the quality of your design
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系统建模结论
1、网格划分:
• 提供自动的网格划分功能;
2、结构模态分析:
• 在线驱动ANSYS/NASTRAN/NX-NASTRAN/ABAQUES进行模态分析;
• 具有自己独立的结构求解器;
2、模态分析验证:
• 相关性分析——FEM模型精度的提升;
• 预实验分析——指导模态实验的布点及激励点的布置;
3、优化分析:
• 通过参数更改,改善系统模型的动力学特性;
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2.3、声学仿真分析
37 copyright LMS International - 2007
Speed-optimized acoustic analysis
Fast full-system model
Response analysis
Reliable FE model
Insights and design guidance
Loads (Test
or MBD)
N&V
Response
Forced
Response
Contribution
analysis
No
Modifications &
Optimization
Full System
Model
Model
Assembly and
Synthesis
Component
Test Model
Component
FE model
Correlation
& Updating
Component
CAD model
Component
Test model
Acoustic
Radiation
Target
met?
Acoustic
response
Target
met?
Derive
surface
mesh
Component
FE model
No
(M)ATV
Create
acoustic
BEM model
Fast
modifications Mesh-based
modifications Geo-based
modifications
20XX-XX-XX
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Page 38 Siemens PLM Software
2.3.1 结构振动分析
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Page 39 Siemens PLM Software
Structural
Loads
Vibration
simulation
Acoustic
response
Acoustic
simulation
LMS Virtual.Lab Acoustics - Extended Range of
Simulation Techniques
Coupled FEM
FEM AML
FEM
BEM
Transient
Coupled BEM Aero-Acoustics
Random Acoustics
Ray Acoustic SEA+
From Frequency Domain to
Time Domain
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Page 40 Siemens PLM Software
NVH响应
40 copyright LMS International - 2007
多体动力学/电磁力计算激励载荷
模态求解
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Page 41 Siemens PLM Software
振动噪声:BEM外场声学——噪声辐射
41 copyright LMS International - 2007
快速全面的求解方案
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Page 42 Siemens PLM Software
Engine Acoustic Radiation process (version ATVs)
42 copyright LMS International - 2008
Vibration
Response
Vector
Processing
Structural
Modes
Structural
Loads
Motion
Flexible Body
Simulation
PDS
BEM Mesh
Structural
Mesh
Field Point
Mesh ATVs
Acoustic
Boundary
Conditions
Pressure
Response
structural
acoustical
time
frequency
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Creation of Acoustic BEM Mesh
43 copyright LMS International - 2008
Given a Structural
Mesh with
ribs/holes
Wrap on the surface
Build high quality,
frequency-dependent
BEM mesh
Detect/Fill Holes
Detect/Remove Ribs
1
2
3
Create BEM Mesh in 1 to 2
hours
Instead of 2 weeks
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Page 44 Siemens PLM Software
Engine Acoustic Radiation process (version ATVs)
44 copyright LMS International - 2008
Vibration
Response
Vector
Processing
Structural
Modes
Structural
Loads
Motion
Flexible Body
Simulation
PDS
BEM Mesh
Structural
Mesh
Field Point
Mesh ATVs
Acoustic
Boundary
Conditions
Pressure
Response
structural
acoustical
time
frequency
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Page 45 Siemens PLM Software
Mesh Mapping / Data transfer case
Special Case for transferring vector data from
one model to another
For acoustics:
• From structural mesh to acoustic mesh
• Vibration response data (ATV approach) or
modes (MATV approach)
45 copyright LMS International - 2008
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Acoustic Solution ATV-Based Response
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ATV Technology
Multi-rpm Analysis within a
day!!
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Key benefits of ATV process
Ultra-fast for multi-loadcase analyses (multi-rpm)
47 copyright LMS International - 2008
ATVs are INDEPENDENT from load conditions
(rpm, order…): you need to calculate ONCE
and then re-use for ALL load conditions
50 rpms means “50 times faster”
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Page 48 Siemens PLM Software
Key benefits of ATV process
Ultra-fast for exterior problems
48 copyright LMS International - 2008
For exterior radiation analyses, ATVs are
SMOOTH FUNCTIONS of frequency.
Structural Boundary Conditions are very
peaked.
Using 10Hz freq spacing instead of 1Hz freq
spacing means “10 times faster”
Acoustic result: need for
small frequency spacing
(1Hz)
ATV: only need for
wide frequency
spacing (10-25Hz)
Structural vibration: need for
small frequency spacing (1Hz)
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Page 49 Siemens PLM Software
Engine Acoustic Radiation process (version MATVs)
49 copyright LMS International - 2008
Structural
Modes
Structural
Loads
Motion
Flexible Body
Simulation
PDS
BEM Mesh
Structural
Mesh
Field Point
Mesh ATVs
Structural Modes
on BEM Mesh
Pressure
Response
Modal
Participation
Factors
structural
acoustical
time
frequency
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Page 50 Siemens PLM Software
2.2.3 声学建模与分析
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51 copyright LMS International - 2007
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Page 52 Siemens PLM Software
声学分析结论:
1、全频段的声学求解器:
• 频域求解器:FEM, BEM, FBEM, HBEM,Ray-Tracing;
• 时域求解器:TFEM, TBEM;
• 统计能量:SEA+
2、变频系统加速求解:
• ATV技术;
3、吸声材料处理:
• 多种吸声材料的快速建模:Biot-Allard,Miki,D-B模型,C-G模型;
• 快速内饰建模:Fast-Trim;
4、声学网格:
• BEM快速生成;
• FEM网格自动生成;
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2.4 后处理功能
53 copyright LMS International - 2007
Speed-optimized acoustic analysis
Fast full-system model
Response analysis
Reliable FE model
Insights and design guidance
Loads (Test
or MBD)
N&V
Response
Forced
Response
Contribution
analysis
No
Modifications &
Optimization
Full System
Model
Model
Assembly and
Synthesis
Component
Test Model
Component
FE model
Correlation
& Updating
Component
CAD model
Component
Test model
Acoustic
Radiation
Target
met?
Acoustic
response
Target
met?
Derive
surface
mesh
Component
FE model
No
(M)ATV
Create
acoustic
BEM model
Fast
modifications Mesh-based
modifications Geo-based
modifications
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Acoustic Post-processing
Post-processing: • 2D and 2.5 D displays
• Total Sound Power:
• ISO Microphone mesh
• Sound Pressure Levels
• Engine Run-up:
• Campbell diagrams
• Orders
• Sound Synthesis
• 3D Animation through frequency range
• RMS, dBA,…
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2.5 后处理
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Contribution Analysis
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Which Mode?
Which Panel?
(ASQ) What shape?
Problem
frequency
Which Path?
NEW
Rev 6A
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57 copyright LMS International - 2005
Contribution Analysis
Is it a matter of source strength or
path sensitivity?
receiver = Σ (transmitter * source)
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后处理结论
Path Contribution Analysis (TPA):
• Identify on the spot which Bearing
is critical
Modal Contribution Analysis:
• How structural modes contribute to
acoustic response
Panel Contribution Analysis
• Wrt Sound Pressure or total Sound
Power
• Which component/panel is most
critical
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Analysis Scalability
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仿真流程
60 copyright LMS International - 2007
Speed-optimized acoustic analysis
Fast full-system model
Response analysis
Reliable FE model
Insights and design guidance
Loads (Test
or MBD)
N&V
Response
Forced
Response
Contribution
analysis
No
Modifications &
Optimization
Full System
Model
Model
Assembly and
Synthesis
Component
Test Model
Component
FE model
Correlation
& Updating
Component
CAD model
Component
Test model
Acoustic
Radiation
Target
met?
Acoustic
response
Target
met?
Derive
surface
mesh
Component
FE model
No
(M)ATV
Create
acoustic
BEM model
Fast
modifications Mesh-based
modifications Geo-based
modifications
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快速更改及优化
Apply “conceptual” structural
modifications
Re-evaluate Acoustic performance on
the fly
No need for time-consuming FE re-
analyses
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Minutes !
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阻尼的更改及优化:
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LMS Virtual.Lab Engine Acoustics
Substructuring
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5 hours 10 minutes
Expanding the Frequency Range
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Design Refinement Optimization
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Post-process and
analyze the results
Define the Analysis
Sequence
Link Optimization
Outputs to Virtual.Lab
Analysis Sensors
Link Optimization
Parameters to
Application Features
Perform the calculations
based on DOE, RSM,
Numerical Optimization,
Six-Sigma
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流体声学
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3、提高工作效率方面:BEM声学网格快速生成
66 copyright LMS International - 2008
Given a Structural
Mesh with
ribs/holes
Wrap on the surface
Build high quality,
frequency-dependent
BEM mesh
Detect/Fill Holes
Detect/Remove Ribs
1
2
3
Create BEM Mesh in 1 to 2
hours
Instead of 2 weeks
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提高工作效率方面:FEM声学网格快速生成
67 fit for the future - copyright LMS International - 2009
5 min
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提高工作效率方面:纯声学不兼容网格处理
68 fit for the future - copyright LMS International - 2009
GAP
(incompatible
meshes)
Inlet: u=1
Outlet: Z=ρc
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提高工作效率方面:振动声学不兼容网格处理
69 fit for the future - copyright LMS International - 2009
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4、应用案例1——法雷奥电机噪声
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仿真结果
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BEHR应用案例: Corrleation
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Restricted © Siemens AG 2014 All rights reserved. Smarter decisions, better products.
谢谢!