tutorial #4 - sacs basic

SACS BASIC Tutorial #4

KL4120 Offshore PlatformOcean Engineering ITB

2015

Outline Advanced Modelling (Review) Basic Load Environmental Load Load Factor and Combination Global Parameters

Assignment #3!

Advanced Modelling (Review)

Any questions (before)?

Kind of member properties type? How to determine member property? Why model need to be offsets? Check model step and troubleshooting

Basic Load Selfweight / Deadload Live load Equipment Load Jacket Appurtunance Load Crane Load + Moment etc

Basic LoadContoh load detail (requested by owner):

Basic Load Selfweight / Deadload

Two way to determine selfweight and deadload in SACS, which one we use?

Basic Load Live load

Live load = human load / operating load

Different for each areas/decks/standards

Basic Load Equipment Load

Using pressure area load Calculate weight / area of equipment,

and then input the load

Basic Load Jacket appurtunance load:

Anode Pad-eye / shackle Mudmats (if not appear in model) Ladder etc

Basic Load Crane load and moments:

What we need: crane weight crane arm

Calculate manually and input as joint load and joint moment

Environmental Load Wave Load Current Load Wind Load etc

Flood (for platform in river/delta/estuary area) Tsunami (for platform in tsunami area) dll

Environmental Load Wave Load


Wave theory selection Calculate Tapp

Environmental Load Current Load

Environmental Load Wind Load

Wind load on SACS Seastate input Manual calculation,

applied in deck legs

Find the difference!

Environmental Load Wind Load

Environmental LoadContoh environmental load :

Load Factor and Combination

Why load must be factor-ed? Why should be determine load

combination? How to determine factor and combination?

Global Parameters Mass and Drag Coefficient Marine Growth etc


Mass and Drag Coefficient


Marine Growth

Assignment #3! Load input from last model that created. Detail:

Selfweight Live load (see references!) Equipment (weight and dimension -> see references!) Crane (assumptions -> see references!)

Environmental load: NIM 155120xy x = wave height , y = wave period |x-y| = wind speed x and y = current speed ( bigger in surface, less in seabed)

FTP Tugas Address : ftp://kuliah.ocean.itb.ac.id Username: senin Password : malam

Format nama file:sacinp.tugas3_155120xy