News & Events

Apr-2010

MBM start to undertake stage 1

for a new build design. i.e. G.A,

Bid preparation and Build cost

analysis

Read More > ---------------------------------------------------------

Mar-2010

MBM undertakes weather route

analysis for a vessel and her cargo

to gain vessel and cargo

accelerations

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Feb-2010

MBM launches new website

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Jan-2010

New naval architecture software

and services within MBM for 2010

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Dec-2009

Strength of MBM enters 2D wire

frame FEA of hatch-covers

Read More > ---------------------------------------------------------

Dec-2009

Large project cargo's are on the

horizon for MBM from the oil

industry

Read More > ---------------------------------------------------------

Dec-2009

Cradle design to transport a 460t

Tug from China

Read More >

---------------------------------------------------------

Sept-2009

Innovative design to transport

windmill towers in upright position

Read More >

 

 

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> Home >> Past Projects >> 2D Hatch Cover Analysis

2D Wire Frame FE-Analysis:

A 2D wire frame is undertaken to compute large structures in FE-Analysis. As an example, below is the hatch cover of a Multi Purpose vessel. This model can be rigorously analysed for all scenarios that occur when transporting heavy loads.

The re-creation of the hatch-cover, tween-deck or the lower-hold of a vessel is commonly undertaken at MBM to confirm the structural integrity to transport cargo’s in sea going conditions.

 

Below are the 4 stages of the analysis:

 

• Stage 1 – Drawings are acquired.

Scantling drawings of hatches used to define the model

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Scantling drawings of hatches used to define the model.

 

 

 

• Stage 2 – Confirmation of dimensions from drawings with a Hatch Survey on the vessel.

 

The vessel under analysis will be visited by the Naval architect to confirm the scantling drawings provided. This is to ensure:

a) The drawings provided correspond to the hatch under analysis.

b) Modifications, corrosion, erosion, cracks, or imperfections are recorded.

A full set of hatches can be created and analysed as one-

Model of Hatches for analysis_01

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Or

 

Singular pontoons can be analysed to speed up the computation process-

Model of Hatches for analysis_02

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Or

 

Sections of the hatch cover (solid 3D model) can be re-created i.e. a transversal -

HatchCoverTransversal_01.

 

 

 

 

 

 

 

 

 

 

• Stage 4 – The model is subject to state of the art FE-Analysis.

FE-HatchCover Analysis.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

At MBM we continually undertake assessments of hatch-covers and tween-decks for Heavy lift cargo to assess deflections and material properties for loading conditions and sea going forces. As an example, these may include but are not limited to stress, strain, and buckling scenarios that will occur from impact conditions caused from slamming.