Price : 150 US$                        Local Strength of Ship Structure

STRUCTURE-PAK is a collection of programs created by practising naval architects for solving local strength problems in a quick and easy manner. This software was developed for designing and analysing elements of local structure from first principles

STRUCTURE-PAK allows the designer to set up 2D structural models of beams, plates and pillars.

STRUCTURE-PAK carries out :

- a moment distribution analysis to determine the forces, moments and deflections of beams.

- a bending and deflection analysis of flat plate.

- a buckling analysis of slender columns.

- a reinforcement analysis of openings in beams web.

STRUCTURE-PAK provides a range of numeric and graphic results reporting capabilities.

STRUCTURE-PAK displays tables and diagrams of numerical results.

STRUCTURE-PAK inlcudes a comprehensive on-line Help which is always available to give the proper information when needed.

BEAM 3.0 computes the shear force, bending moment, shear stress, bending stress and deflections for beams of uniform or variable section. The beam may be supported by a number of supports varying from one to ten. A combination of point loads, distributed loads (uniform or variable) and local moments may be applied to the beam. The user may also define uniform loads from an hydrostatic head, a pressure, a specific-weight or a specific volume. The beam self weight may be included as an additional load if required.

The beams section properties can be directly entered in the Section window or obtained by defining the beam cross section in the Special Section window. Stresses and deflections tables and diagrams can then be obtained. Alternately, the minimum section modulus and shear areas may be supplied by selecting the material properties and a safety factor.

MAJOR FEATURES

- On line help

- Imperial or SI units

- Single span or continuous beams

- Material properties database

- Limiting conditions (allowable stresses and deflections)

- Partial end fixities

- Variable beam cross section

- Geometrical properties computation

- Load superposition

        Point loads

        Distributed loads

        Hydrostatic loads

        Pressure

        Specific weight

        Specific volume

        Local moment

        Beam self-weight

- Drawing of beam cross-section

- Drawing of beam profile with loads and supports

- Graphics of results

        Shear force

        Bending moment

        Bending stress

        Minimum shear area

        Minimum section modulus

        Deflection

COLUMN 1.0 is used to calculate the buckling load and stress for slender columns. Column section may be circular, rectangular, elliptical or built-up with a group of rectangular elements. Material may be either metal, or wood (solid rectangular or circular column only).

The column section area and radius of gyration may be entered directly or calculated by the program from the section dimensions used.

MAJOR FEATURES

- On line help

- Imperial or SI units

- Material properties database (common to all programs)

- Limiting conditions

- Choice of column section

        Rectangular

        Circular

        Elliptical

        Special (Built-up column)

- End conditions

        Fixed-Fixed

        Fixed-Pinned

        Pinned-Pinned

        Fixed-Guided

        Fixed-Free

        Pinned-Guided

PLATE 1.0 computes the bending stress and deflections of a flat rectangular plate. Design calculations may be performed to define the required thickness to satisfy the limiting conditions. Alernately, an existing plate of a known thickness may be analysed to ensure that it is not stressed or deflected beyond permissible limits.

MAJOR FEATURES

- On line help

- Imperial or SI units

- Material properties database (common to all programs)

- Limiting conditions (allowable stresses and deflections)

- Plate with simply supported edges

- Plate with built-in edges

- Point load with variable radius of application

- Distributed uniform load

  HOLE 1.0 evaluates if reinforcement is required for beams with opening(s) cut in web. The program recommends the type (e.g. flat/ring bar and/or insert plate) and size of web reinforcement when required.

Two solvers are available. The first method is semi-empirical and is based on research work by Redwood and Shrivastava. The second approach is based on Bureau Veritas "Rules and Regulations for the Construction and Classification of Steel Vessels". This method takes into account the secondary bending and normal forces created by the opening in the beam web. Both methods use the bending moment and shear force in way of the hole.

MAJOR FEATURES

- On line help

- Imperial or SI units

- Material properties database (common to all programs)

- Two calculation methods available

- Determination of reinforcement size and type when required

- Calculation of stresses with and without opening (Veritas)