Oax Report Opt 3 INC PALA

RUDDER - RESULTS -

Ship Name: clase oaxaca

User: Login: deptohcosOrganisation: File: C:\Users\personal\Documents\calculos RUDDER\Copy of oax opt INC PALA.rud

Rudderv.1.5dFile: C:\Users\personal\Documents\calculos RUDDER\Copy of oax opt INC PALA.rud

Ship Name: clase oaxaca20/08/2014



BLADE - GEOMETRY & FORCES

GEOMETRY RESULTS

Cross sectional Mean height Mean breadtharea (m2) Hmean (m) Bmean (m)

Area A (full blade) . . . . . . . . . . . 2.849 500 2.050 1.390Area AF (afore the stock axis) . . 0.763 625 -- --

Area AT = A + rudder post or horn area . . . . 5.699 500 (m2)

LEVER ARMS

Ahead Condition Astern Condition

Lever r (m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.14 0.54

APPLIED FORCES


Rudder Force CR actiong on full blade (N) . . . . . . 182 721.20 33 222.04

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RUDDER STOCK DIAMETER

- Direct Calculation -

Stock material (Yield / Tensile) . . . . . . . . . . . . . . . . . . . . . . 235 / 400 (N/mm2)Stock standard material (Yield) . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 (N/mm2)Material factor k1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.00

Direct Calculation Results


Bending moment MB (N.m) . . . . . . . . . . . . . . . . . . . 216 411.60 39 347.55Support force FA2 (N) . . . . . . . . . . . . . . . . . . . . . . . 534 609.90 97 201.80Support force FA3 (N) . . . . . . . . . . . . . . . . . . . . . . . 351 888.70 63 979.77

Stock Diameter Results


Rudder stock bending moment (N.m) . . . . . . . . . . . 216 411.60 39 347.55Rudder torque (N.m) . . . . . . . . . . . . . . . . . . . . . . . . . 25 398.24 18 102.69

Ahead Condition Astern ConditionDLower DUpper DLower DUpper

Basic Stock Diameter . . . . . . . . . . . . 265.00 123.46 153.59 110.28Rule Stock Diameter (1) . . . . . . . . . . 265.00 123.46 153.59 110.28(1) all corrections taken into account (material, serv. notation, etc.)

Actual value Rule value(mm) (mm)

Stock diameter at the lower bearing level . . . . . . . . . . 348.00 265.00 Stock diameter at the upper bearing level . . . . . . . . . . 170.00 123.46

Rudder Stock Lower Bearing

Actual bearing inner diameter dm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.35 (m)Actual bearing length hm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.30 (m)

Ahead Conditions Astern Conditions Rule value

Support Force Fa acting on the bearing (N) . . . . . . . . 534 609.900 97 201.800 - Mean Bearing Pressure (N/mm2) . . . . . . . . . . . . . . . . . . . . . 5.193 0.944 7.000

Actual Max Rule

Length/diameter ratio of the bearing surface . . . . . . . . . . . . 0.85 1.20

Rule bearing clearance (metallic supports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.000 (mm)Rule bearing clearance (non-metallic supports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.50 (mm)

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Rudder Stock Upper Bearing

Actual bearing inner diameter dm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.17 (m)Actual bearing length hm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15 (m)

Ahead Conditions Astern Conditions Rule value

Support Force Fa acting on the bearing (N) . . . . . . . . 351 888.700 63 979.770 - Mean Bearing Pressure (N/mm2) . . . . . . . . . . . . . . . . . . . 13.719* 2.494 7.000

Actual Max Rule

Length/diameter ratio of the bearing surface . . . . . . . . . . . . 0.88 1.20

Rule bearing clearance (metallic supports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.000 (mm)Rule bearing clearance (non-metallic supports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.50 (mm)

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BLADE SECTIONS

Blade material (Yield / Tensile) . . . . . . . . . . . . . . . . . . . . . . . 235 / 400Blade standard material (Yield) . . . . . . . . . . . . . . . . . . . . 235 (N/mm2)Material factor k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.00

Blade section S 1 - perfil superior

Z coordinate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.000 (m)Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.068 024 (m2)Xg of gravity center . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.288 (m)

Moment of Inertia / Gx axis . . . . . . . . . . . . . . . 0.001 471 802 (m4)Moment of Inertia / Gy axis . . . . . . . . . . . . . . . 0.019 960 180 (m4)Section modulus Ws . . . . . . . . . . . . . . . . . . . . . . . 0.006 846 (m3)

Forces - direct calculation

Ahead condition Astern condition

Bending moment (N.m) . . . . . . . . . . . . . . . . . . . . . . . . 177 857.40 32 337.71Shear force (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 721.20 33 222.04

Strength checks - direct calculation

Ahead condition Astern conditionRule value Actual value Actual value(N/mm2) (N/mm2) (N/mm2)

Bending stress . . . . . . . . . . . . . . . . . . . . . . . . . . . 110.00 25.98 4.72 Shear stress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50.00 2.69 0.49 Equivalent stress . . . . . . . . . . . . . . . . . . . . . . . . . 120.00 26.39 4.80

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Blade section S 2 - perfil inferior

Z coordinate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 1.900 (m)Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.039 827 (m2)Xg of gravity center . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.254 (m)

Moment of Inertia / Gx axis . . . . . . . . . . . . . . . 0.000 409 800 (m4)Moment of Inertia / Gy axis . . . . . . . . . . . . . . . 0.007 392 892 (m4)Section modulus Ws . . . . . . . . . . . . . . . . . . . . . . . . 0.002 787 (m3)

Forces - direct calculation

Ahead condition Astern condition

Bending moment (N.m) . . . . . . . . . . . . . . . . . . . . . . . . . . . 854.85 155.43Shear force (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 497.74 2 090.50

Strength checks - direct calculation

Ahead condition Astern conditionRule value Actual value Actual value(N/mm2) (N/mm2) (N/mm2)

Bending stress . . . . . . . . . . . . . . . . . . . . . . . . . . . 110.00 0.31 0.06 Shear stress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50.00 0.29 0.05 Equivalent stress . . . . . . . . . . . . . . . . . . . . . . . . . 120.00 0.59 0.11

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CONE COUPLINGS

General data for computation

Cone coupling with hydraulic arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NOKeyed connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . YES

Stock material (Yield / Tensile) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 / 400 (N/mm2)Stock material factor k1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.00

Cone coupling material (Yield / Tensile) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 / 400 (N/mm2)Cone coupling material factor k1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.00Yield stress used for computation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 (N/mm2)

External boss diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500.00 (mm)

Rule Stock diameter at lower bearing level (Direct Calculation method) . . . . . . . . . . . . 265.00 (mm)Rule Stock diameter at upper bearing level (Direct Calculation method) . . . . . . . . . . . . 123.46 (mm)

Cone coupling results

Min Rule Actual MaxRule

Taper on diameter . . . . . . . . . . . . . . . . . . . 0.08333 0.16058* 0.125* not allowable

Key** section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381.04 (mm2)** for cone couplings without hydraulic arrangements

Dimensions massive part & slogging nut

Actual thickness Rule thickness(mm) (mm)

tS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 685.00 397.50dG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196.00 172.25tN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160.00 117.60dN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295.00 294.00dE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500.00 414.00

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