ansysworkbench培訓(xùn)富靜技術(shù)授之以漁-1.4dynamic動力學(xué)模塊-實(shí)例1intro

ANSYS

MechanicalDynamicsANSYS,

Inc.Proprietary?

2009

ANSYS,

Inc.s.WS1-1July

2009Inventory

#002666Workshop

1:Intro

(Flywheel)感謝使用技術(shù)整理的學(xué)習(xí)資料，In

this

workshop,

the

vibration

characteristics

of

a

spinning

flywheel

will

beinvestigated.感謝使用技術(shù)整理的學(xué)習(xí)資料，Drop

a

Static

Structural

system

into

the

Project

Schematic.In

this

system,

the

rotational

velocity

will

be

applied.感謝使用技術(shù)整理的學(xué)習(xí)資料，Drop

a

Modal

system

onto

the

Results

cell

of

the

Static

Structural

system.In

this

system,

the

prestressed

modes

will

befound.感謝使用技術(shù)整理的學(xué)習(xí)資料，Drop

a

Harmonic

Response

system

onto

the

Model

cell

of

theStaticStructural

System.In

this

system,

a

harmonic

load

will

be

applied

to

the

staticflywheel.感謝使用技術(shù)整理的學(xué)習(xí)資料，Import

the

geometry

file–

Flywheel.igsEdit

the

Model

cellto

open

the

Mechanical

application.感謝使用技術(shù)整理的學(xué)習(xí)資料，Two

coordinate

systems

will

be

added

to

align

with

the

center

of

the

shaft.The

origin

of

theaxis

by

selectincoordinate

system

can

easily

be

located

along

theshafto

keypoints.感謝使用技術(shù)整理的學(xué)習(xí)資料，Duplicate

the coordinate

system.–

set

the

type

of

the

newly-created

coordinate

system

to

Cylindrical感謝使用技術(shù)整理的學(xué)習(xí)資料，Select

the

symmetry

surfaces

and

insert

a

Frictionless

support.–

Since

the

geometry

is

3D,

a

frictionless

support

is

the

same

as

applying

asymmetry

boundary

condition.感謝使用技術(shù)整理的學(xué)習(xí)資料，Insert

a

Remote

Displacement

on

the

flywheelhub.select

the

coordinate

system

that

aligns

with

the

axis

of

the

shaftfix

the

X

Component,

Z

Component,

and

Rotation

Y感謝使用技術(shù)整理的學(xué)習(xí)資料，Insert

a

Rotational

Velocity

inertial

load.select

the

coordinate

system

that

aligns

with

the

axis

of

the

shaftset

the

Z

component

to

600

RPMSolve

the

model.感謝使用技術(shù)整理的學(xué)習(xí)資料，Insert

a

Directional

Deformation.–

set

the

Coordinate

System

to

the

Cylindrical

Coordinate

System

that

aligns

withthe

axis

of

the

shaftThe

X-Axis

orientation

is

now

the

radial

component.感謝使用技術(shù)整理的學(xué)習(xí)資料，Duplicate

the

Directional

Deformation.–

set

the

Orientation

to

Y

AxisThis

is

now

the

tangential

component

of

deformation.感謝使用技術(shù)整理的學(xué)習(xí)資料，Using

the

cylindricalcoordinate

system

again,

insert

radial

and

tangentialcomponents

of

stress.感謝使用技術(shù)整理的學(xué)習(xí)資料，Move

down

to

the

Modal

branch

and

Solve.Insert

some

total

deformation

plots

to

review

themode

sh

s.感謝使用技術(shù)整理的學(xué)習(xí)資料，Drag

and

drop

the

Frictionless

Support

and

Remote

Displacement

from

theStatic

Structural

branch

into

the

Harmonic

Response

Branch.感謝使用技術(shù)整理的學(xué)習(xí)資料，Insert

an

Acceleration

inertial

load.–

set

the

Z

component

to

2

G

(~20000mm/s^2)感謝使用技術(shù)整理的學(xué)習(xí)資料，Modify

theysis

Settings.set

the

Range um

to

500

Hzset

Cluster

Results

to

Yesset

Constant

Dam Ratio

to

5%Solve

the

model.感謝使用技術(shù)整理的學(xué)習(xí)資料，Insert

a

DeformationFrequency

Responseresult

on

the

outer

surfaceof

theflywheel.set

the

Spatial

Resolutionto

Use

umset

the

Orientation

to

ZAxisMake

note

of

the

frequency

and

phase

angleat

which

the

umamplitude

occurs.感謝使用技術(shù)整理的學(xué)習(xí)資料，Insert

a

Directional

Deformation

result.set