LMS Virtual.Lab在电机上的解决方案 LMS Virtual.Lab Solution for ...tianyuantech.com/download/LMS.pdf · LMS Test.Lab – Test Based Engineering LMS Imagine.Lab – Mechatronic

Restricted © Siemens AG 2014 All rights reserved. Smarter decisions, better products.

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

Restricted © Siemens AG 2014 All rights reserved.

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



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



New LMS-Siemens – From 2014 onward...

LMS Siemens STS

Siemens PLM

20XX-XX-XX



New LMS-Siemens Portfolio

20XX-XX-XX



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



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

20XX-XX-XX



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

20XX-XX-XX



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

20XX-XX-XX



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)

20XX-XX-XX



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；


20XX-XX-XX



LMS Virtual. Lab可以解决什么问题？


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

20XX-XX-XX



电机噪声用户：


20XX-XX-XX



2、振动/流体噪声仿真分析解决方案介绍


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

20XX-XX-XX



NVH仿真分析流程：更强大的前后处理功能


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



电机的NVH问题：源——传递函数——响应


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



2.1 Source1：流体激励——风扇噪声


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

20XX-XX-XX



气动工具噪声测试及声学模型


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！

20XX-XX-XX



SAS—CFD分析结果：


20XX-XX-XX



BPF声学仿真分析结果

工况描述：

• 电动工具风扇转速：15150r/min；


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%

20XX-XX-XX



2.1、Source2：结:激励




Response analysis

Reliable FE model


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

20XX-XX-XX



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

20XX-XX-XX



2.1.2、CAE建模解决方案


20XX-XX-XX



2.1.3 Source3：电磁力激励

Obtaining realistic Loads from Eletro-Magnetic

Simulation software

25 /45 copyright LMS International - 2012

20XX-XX-XX



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

20XX-XX-XX



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

20XX-XX-XX



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；


20XX-XX-XX



2.2、系统级模态及传函仿真分析




Response analysis

Reliable FE model


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

20XX-XX-XX



电机的NVH问题：源——传递函数——响应


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



2.2.1 结构动力学分析——结构模态分析


20XX-XX-XX



2.2.1、模态特性验证


20XX-XX-XX



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

20XX-XX-XX



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

20XX-XX-XX



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；

20XX-XX-XX



2.3、声学仿真分析




Response analysis

Reliable FE model


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

20XX-XX-XX



2.3.1 结构振动分析


20XX-XX-XX



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

20XX-XX-XX



NVH响应


多体动力学/电磁力计算激励载荷

模态求解

20XX-XX-XX



振动噪声：BEM外场声学——噪声辐射


快速全面的求解方案

20XX-XX-XX



Engine Acoustic Radiation process (version ATVs)


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

20XX-XX-XX



Creation of Acoustic BEM Mesh


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

20XX-XX-XX



Engine Acoustic Radiation process (version ATVs)


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

20XX-XX-XX



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)


20XX-XX-XX



Acoustic Solution ATV-Based Response


ATV Technology

Multi-rpm Analysis within a

day!!

20XX-XX-XX



Key benefits of ATV process

Ultra-fast for multi-loadcase analyses (multi-rpm)


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”

20XX-XX-XX



Key benefits of ATV process

Ultra-fast for exterior problems


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)

20XX-XX-XX



Engine Acoustic Radiation process (version MATVs)


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

20XX-XX-XX



2.2.3 声学建模与分析


20XX-XX-XX




20XX-XX-XX



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；


20XX-XX-XX



2.4 后处理功能




Response analysis

Reliable FE model


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

20XX-XX-XX



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,…


20XX-XX-XX



2.5 后处理


20XX-XX-XX



Contribution Analysis


Which Mode?

Which Panel?

(ASQ) What shape?

Problem

frequency

Which Path?

NEW

Rev 6A

20XX-XX-XX




Contribution Analysis

Is it a matter of source strength or

path sensitivity?

receiver = Σ (transmitter * source)

20XX-XX-XX



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


20XX-XX-XX



Analysis Scalability


20XX-XX-XX



仿真流程




Response analysis

Reliable FE model


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

20XX-XX-XX



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


Minutes !

20XX-XX-XX



阻尼的更改及优化：


20XX-XX-XX



LMS Virtual.Lab Engine Acoustics

Substructuring


5 hours 10 minutes

Expanding the Frequency Range

20XX-XX-XX



Design Refinement Optimization


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

20XX-XX-XX



流体声学


20XX-XX-XX



3、提高工作效率方面：BEM声学网格快速生成


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

20XX-XX-XX



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

20XX-XX-XX



提高工作效率方面：纯声学不兼容网格处理


GAP

(incompatible

meshes)

Inlet: u=1

Outlet: Z=ρc

20XX-XX-XX



提高工作效率方面：振动声学不兼容网格处理


20XX-XX-XX



4、应用案例1——法雷奥电机噪声

20XX-XX-XX



仿真结果


20XX-XX-XX



BEHR应用案例： Corrleation


20XX-XX-XX




Restricted © Siemens AG 2014 All rights reserved. Smarter decisions, better products.

谢谢！

Documents

LMS Virtual.Lab在电机上的解决方案 LMS Virtual.Lab Solution for ...tianyuantech.com/download/LMS.pdf · LMS Test.Lab – Test Based Engineering LMS Imagine.Lab – Mechatronic