Challenge

Radar Mast & Final Assembly of Yacht

RRamana Murthy14 Feb 2022

SUNSEEKER PREDATOR YATCH

Objective

To model and render an Sunseeker predator yatch using surface modelling and solid modelling techniques in solid works.

Method

Types Of Commands

Sketch: Create the 2D or 3D sketches and dimension and apply geometrical relations.

Features: Select the appropriate features such as revolve, extrudes and fillets, determine features to apply.

Surfaces: Surfaces are formed by applying various surface features like extrude thin.

Assembly: Select the components to mate and apply the mates.

1.Sketch Creating a model begins with a sketch. Based on the sketch, we can create features. We can add delete or combine one or more features to make a part. Then, we can mate the appropriate parts to create an assembly. From the parts or assemblies complete drawings are created.

3-D sketch When sketching in 3D, we can snap to directions X, Y, and Z, and constraints are applied Along X, Y, Z respectively. When sketching on a plane, we can snap to the horizontal or vertical directions in the plane, and constraints are applied to the Horizontal and the Vertical.

1.Sketch Commands:

Smart Dimension - Creates a geometrical dimension for any selected sketch entity.

Point – It is a 1D element, it inserts a point or vertex into a sketch entity. This cannot be deleted if it is part of sketch endpoint or centre point.

Line - Line is one of the first sketching tools, lines can be drawn horizontally, vertically or at any angle. It plays very important role to complete the 2D drawing of the product or part and very easy to utilize its features.

Circle - The circle enables to create the circular drawing on the graphics area. There are two circle tools are available and they are “Centre circle” and “Perimeter circle”.

Rectangle - Sketches rectangles or square with a centre point at a selected angle there are rectangles like centered rectangle, corner rectangle. Parallelogram sketches a standard parallelogram.

Spline – splines can be created with number of midpoints depending upon the complexity of the curve. A 2or 3 dimensional curves defined by a set of control points. Points within a spline can be added or deleted.

Sketch Fillet - A tangent arc in between two sketch entities can be created with a radius.

Text - It can be used to write the text necessary wherever required either it’s a plane or face of a model.

Convert Entities - Copy a sketch entity on plane, it must have an original sketch entity already drawn and selected to use this tool.

Offset Entities – Creates a sketch entity to a specified distance from the original entity. Must have an original sketch entity already drawn and selected to use this tool.

Sketch Picture - Insert an image file into the background of a sketch. This allows the user to 2D sketches based on the image. Use the sketch picture property manager to alter the inserted image.

2.Features

Some sketch-based features are shapes such as extrude, extrude-cut and holes. Other sketch-based features such as lofts and sweeps use a profile along a path. Applied features include fillets, chamfers, or shells they are applied to existing geometry using dimensions and other characteristics to create the feature. Then we add applied features. It is possible to create a part without sketch-based features.

Feature Commands

Extruded Boss/Base - An Extruded Boss/Base feature will allow us to take a 2D sketch and add thickness to it in the perpendicular dimension.

Extruded Cut – It is a tool to remove material by projecting a sketched section normal to the sketch plane.

Combine – Combines the solids based on add, subtract and common areas are present.

Split - Lines are used to divide model faces into two. Split lines are created like any other sketched feature. They can be one or more connected sketch entities. They must be oriented so that they will pass through model faces when projected normal to the sketch plane.

Dome – dome can be of two types elliptical and spherical. It can add one or more domes to the selected planar or non-planar faces. The software calculates the distance using the radius of the arc as a basis for the dome.

Pierce Relationships - The Pierce relationship is used to sweep along a path. It can be thought of as a 3D Coincident relationship. In our spring, the circle will follow the helix. Consider the helix as a thin piece of wire and the profile sketch as being drawn on a piece of paper. If we stick the wire through the paper at the centre of the circle, this would be a pierce relationship. When we perform the sweep, the paper will slide along the wire, held at the pierce point.

Merge – combines solids or surfaces directly as a single solid or surface.

3.Surface Modelling

zero thickness geometry is known as surface. Surface modelling is a method of creating planar or non-planar complex geometry which has zero or negligible thickness. The surfaces are generally used to create models of complex shapes. We can convert surface models into solid models. We can also extract a surface from a solid model using the tools available for surface modelling.

Surface Commands:

Lofted Surfaces – Creates a lofted surface between two or more profiles or sketches. Specify start and end constraints and add guide curves to specify the path shape.

Boundary Surfaces – The boundary surface feature allows to create surfaces that can be tangent or curvature continuous in both directions.

Extruded Surfaces – Extrudes a sketch or selected sketch contours in one or two directions two create a surface features.

Revolved Surfaces – Revolves a sketch or selected sketch contours around an axis to create a revolved surface features.

Swept Surfaces – It Sweeps a closed profile along an open or closed path to create a surface feature. It uses a tangent plane at the end of the path so that the path is normal to the swept surface.

Filled Surfaces – Patches a surface within a boundary defined by edges, sketches, or curves.

Ruled Surfaces – Inserts ruled surfaces in a specified direction from edges. Tangent to surface, Normal to surface, tapered to vector, perpendicular to vector or sweep can be selected.

Trim Surface – It trims the surfaces where a surface intersect with another surface, a plane or a sketch.

Knit Surface – It combines two or more adjacent, non-intersecting surfaces into a single surface body. The surfaces must join at an edge. If the resulting knit surface encloses a volume and can create a complete solid body.

Move/copy surfaces – Moves or copy surfaces about a plane or a sketch.

Offset Surface – Offsets surfaces using one or more continuous faces. This tool helps us to create an offset surface with gaps.

Extend Surface – Extends one or more edges or faces on a surface, based on end conditions and extension type.

Mirror surfaces – A mirror feature is a copy of a selected feature, mirrored about a plane or planar face. A mirror sketch entity is a copy of a selected sketch entity that is mirrored about a centreline. If the original feature or sketch is modified, the mirrored copy is updated to reflect the change.

Reference plane – Planes can be created in part or assembly documents. We can use planes to sketch, to create a section view of a model, for a neutral plane in a draft feature, and so on.

Projected curve – A projected curve is typically used either in sweeps and lofts as path or guide curve.

There are two types of projected curves:

Sketch on Sketch: Use two sketches to make a single curve

Sketch on surface: Use a sketch to project on a surface

Modelling:

The yatch consists of following parts to be designed individually and assembled.

surface modelling: extrude surface, trim surface, ruled surface, lofted surface, swept surface

1.Blueprint- It is setup using with respect to reference planes where 2D and 3D sketches are drawn with transparent blue print photos.

Fig1: Blueprint setup

2.Hull - Hull is the base for all other parts in the assembly, accommodates all other parts.

Hull is designed using 2D splines and sketches, ellipse, 3point arcs, trimming of sketches and a projected curves from 2 different planes and surfaces are created using surface extrude is used to form the hull deck is created on hull and knitting is done to join the surfaces and extra surfaces are trimmed off, various chamfer and fillet commands are used, is merged into a solid and shell feature during the modelling according to E-book.

Fig2: Hull

3.Superstructure- Superstructure provides living space on hull, it is designed using blueprint model as reference on deck surface 2D sketches, splines, convert entities, offset entities various surface modelling options like extrude surfaces, trimming surfaces as shown in the E-book are used the superstructure is merged into a solid and shell feature is applied after mirroring and various colours are applied.

Fig3: Superstructure

4.Propeller - Propeller is designed using solid modelling 2D sketches- lines, circles, splines and extruded, unwanted solid material is removed by using extrude cut commands.

Fig4: Propeller

5.Garage door - Garage door is made from the split body from the hull solid using 2D sketches and solid modelling techniques like extrude and extrude cut and "name" is created on garage door following as per E-book.

Fig5: Garage door

6.Radar - Radar is placed on radar yatch, It is created using solid modelling by 2D sketches as and extruded and extra sketches or surfaces are trimmed off, various options like chamfer and fillets are used "name" is created on radar.

Fig6: Radar

7.Front seat - Front seat is designed with deck as reference using solid modelling techniques on 2D sketches and performing operations like extrude, extrude cut, chamfer fillet and various features are applied and mirrored about midplane.

Fig7: Frontseat

8.Middle seat – using deck as reference, middle seat is designed using various solid modelling commands using 2D sketches using extrude, extrude cut, chamfer fillet and various features are applied and mirrored about midplane as per book.

Fig8: Middleseat

9.Rear seat - using deck as reference, rear seat is designed by using commands like extrude, extrude cut, chamfer, fillets, offsets, mirror and various colours are applied.

Fig 9: Rearseat

10.Radar Mast- Radarmast is designed using solid modelling on an extended surface on superstructure commands used are extrude, extrude cut, fillet, chamfer, revolve, shell, mirror, dome from 2D sketches.

Fig10: Radarmast

Assembly:

There are 2 types of assembly approaches:

Top-down approach: Here the parts are designed and assembled simultaneously.

Bottom Up approach: Here the parts designed first and then assembled with reference to a particular part.

Superstructure is placed with respect to fixed hull, and radarmast is placed on superstructure and radar placed on radarmast, propeller is fixed to hull using mates

Mates used: Coincident mate for planes and faces.

Fig11 : Assembly of all parts

Rendering:

The photoview 360 rendering is done in solidworks to obtain realistic views and various views have been rendered by adjusting the lightings according to scene.

Decals provide us option to apply logos and allows labelling on surfaces.

Appearances allow us to apply paintings of colours on bodies, parts, or surfaces.

Lightings can be adjusted in the scene or assembly to match the environment and look real.