[email protected] engr-36_lec-28_application_sesimic-analysis.ppt 1 bruce mayer, pe...

[email protected] • ENGR-36_Lec-28_Application_Sesimic-Analysis.ppt1

Bruce Mayer, PE Engineering-36: Engineering Mechanics - Statics

Bruce Mayer, PELicensed Electrical & Mechanical Engineer

[email protected]

Engineering 36

Real LifeApplication



Bruce Mayer, PEDir. System Engineering

23Jul01

AL-3100S2 Seismic LoadingCG Measurements



SystemFootPrint



MacroMicro Main Unity

x

z

x y

z

z

x



Loader/UnLoader

x

z

x x

z

y

z



3100 MiniEnvironment Housing

x

z

y

z

x

z

x

y



Results, MiniEnvironment

Total Weight/Mass = 25.3 kN, 260 kg, 570 lb

Maximum Leg Load = 1.33 kN (300 lb) Center of Gravity Offset from Geometric

Center• CG 3% to Left (toward side A-D)• CD 2% Forward (toward end A-B)

CG offset Attributed to Fan Motor Inverter-Drive Unit



Leg Loading & Ctr of Gravity Test Apparatus

A B

CD

Load Cell at Each Level-Leg



Main Unit Center of Gravity

Test: X-Axis Tilt

Main Unit Center of Gravity Test

Y-Axis Tilt



Load/Unload Unit

Center of GravityTest: X-Axis Tilt



Load/Unload Unit Center of GravityTest: X-Axis Tilt

BEFORE Level

0.04° Tilt

AFTER Level

3.17° Tilt



LCGD-1k Load Cell Test – No Load - 23Jul01

13.65 Vdc Excitation Power Source

NO Load OutPut Signal (mVdc)

Load Cell

Lift Truck

3100 SEMICon-West01 MiniEnvironment Crate



LCGD-1k Load Cell Test – Full Load - 23Jul01

13.65 Vdc Excitation Power Source

Loaded OutPut Signal (mVdc): 8.8 mV•(50lb/mV) 440 lbs

Load Cell

Lift Truck

3100 SEMICon-West01 MiniEnvironment Crate



XY CG Calc Measure With Load

Cells• Total SubSytem Weight• Reaction loads at All Floor

Contact Points

Calc using RA & RB

LRYLWM AB 10

Solve for W and Y1• Check W by

LRYWM BA 10

BAz RRWF 0



Vertical CG (z-CoOrd) Determination

BeforeAfter



Vertical CG Determination Use XY CG Results TIP System, and Measure Angle with

Digital Protractor Note that for Higher CG, the Restoring Lever

Arm is Shortened More Working the Geometry, and Doing the Math

Find for Small Tilt Angles :

beforeB

afterBcgcgA R

RxzM

,

,1tan

0



Bruce Mayer, PEDir. System Engineering

19Feb02

3x00 S2-§19Seismic Protection

EarthQuake– Magnitude

8.0– Kurile Islands– 03Dec1995



3x00 Seismic Protection Analysis Plan Measure/Calc Weight and Center of Gravity Consult S2/§19 for Lateral Loading Criteria (0.63g) Consult Mechanical Design Drawing for Seismic

Structural-Element Location & Configuration Use Newtonian Vector Mechanics to Determine

Force & Moment Loads Use Solid-Mechanics Analysis to Determine

Fastener (Bolt) Stresses Use Mechanical-Engineering &

Materials Properties to determine Factors of Safety



BMayer



3x00 S2Testing: Tatsuno Japan, Dec01

S2-0200 Test SystemAL3120F, s/n 111001

3x00_S2S8_Tatsuno_PhotoDoc_0112.ppt



3x00 Seismic Loading & Geometry

BMayer



Loading Geometry Detail



Leg Loading & Ctr of Gravity Test Apparatus

Load Cell atEach Level-Leg

P7310022a_mm_tilt_full.JPG

Jack to TiltFrame Unit



Center of Gravity Tilt-Testing: Before

DigitalProtractor

P7310050_Ul_gage_before.JPG



Center of Gravity Tilt-Testing: After

DigitalProtractor

P7310055_me_GageAfter.JPG



OverTurning Analysis Analysis Parameters:

1. Worst Case → SHORTEST Restoring-Moment Lever-Arm– Lever Arms= 582mm, 710mm, 776mm (see

slides 4&5)

2. Vertical (resisting/restoring) Acceleration of 0.85gper SEMI S2 §19.2.4

3. Horizontal (overturning) Acceleration for non-HPM equipment of 0.63g per §19.2.2

Results → Safe From Overturning WithOUT Restraints (but not by much!)

Pivot Axis OverTurning Restoring Factor ofLine Direction Moment (N-m) Moment (N-m) SafetyR-S Y 6884 6966 1.01P-Q X 6884 8504 1.24

3x00_Seismic_Analysis_0202.xls



Bracket Stress Analysis Analysis Parameters

1. Assume Failure Pointat M6 or M10 Bolts

2. FOUR (4) Angle Brackets With a total of 8 Connecting & Anchor Bolts, Resist Shear

3. Two Bolts Per Point, Each Bolt Bears 50% of Load

4. Bolt Axial-PreLoad is negligible (Snug-Fit)

5. Shear Load Per Restraint Point = 500lb/2.22kN

6. Use Von Mises Yield Criteria: Ssy = 0.577Sy

Results

2.22 kN

Bolt Bolt Ssy Load Stress, Factor of

Size & Fcn Material (MPa) (MPa) SafetyM6 Connector SS-304 139.1 13.84 10.1M10 Anchor SS-304 139.1 4.74 29.4

3x00_Seismic_Analysis_0202.xls



3x00 S2-§19- Appendix A - R5-1: Seismic

Protection CheckList



X

X See Analysis By B. Mayer PE: file 3x00_Seismic_Analysis_0202.xls

Factor of Safety 10x for Shear-Load



S2-0200, §19 R5-1: Seismic Protection CheckList cont.1

X

Anchors are well secured, and system is connected by Flexible Electrical & CDA conduits

X

FrameWork is Rigid Relative to Module Weight Given 0.63g acceleration

FrameWork is Rigid Relative to Module Weight Given 0.63g acceleration

Customer Supplied M10 Floor Anchors Should have Need Pull-Out Rating 1.1 kN (250 lb) Ref: ASTM Standard E 488

X

X

X NO attached Equipment




No Large and Brittle ComponentsX

X

X

NOT APPLICABLE by Q.B3




No Hazardous Piping. The CDAir piping is flex-line

X

X

X

X




X

X



OLYMPUS Integrated Technologies America, Inc.

3x00 S2-§19- Appendix B -

Anchor-Bolt PullOut Ratings



B. Mayer Research: 1911 25-Jul-01

Ref: http://www.powers.com/manual/23pb.htm • 23.7 Performance Data

Testing conducted according to ASTM Standard E 488. Ultimate Load Capacities - Carbon Steel Power-Bolt™

GuideAnchor

SizeEmbed.Depth

Torque (ft-lbs.)

Tension (lbs.)

Shear (lbs.)

Tension (lbs.)

Shear (lbs.)

Tension (lbs.)

Shear (lbs.)

5/16"~ M8 2" 15 2,640 3,280 3,120 4,230 3,270 4,4005/16"~ M8 3" 15 3,280 4,240 3,780 5,380 4,260 5,3803/8"~M10 2-1/2" 35 5,200 7,270 5,590 8,155 6,270 8,2653/8"~M10 3-1/2" 35 5,585 8,525 6,150 8,770 7,550 9,055

1/2" ~ M12 3" 60 7,325 10,150 9,780 10,690 10,545 12,0051/2" ~ M12 5" 60 8,060 12,930 10,855 14,740 11,460 14,435

2,000 psi Concrete 4,000 psi Concrete 6,000 psi Concrete



OLYMPUS Integrated Technologies America, Inc.

3x00 S2-§19- Appendix C -

Engineering Mechanics Analsysis

[email protected] engr-36_lec-28_application_sesimic-analysis.ppt 1 bruce mayer, pe...

Documents

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load 23jul01

load cell test

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fan motor inverterdrive

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minienvironment housing