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Welcome to Solidworks
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Look at what we can do now…
Computer-Aided
Drafting (CAD)
Virtual RealityStress Analysis
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Compared to back when…
๏ OLD (1970-1990)
–Technical Pen
–Templates
–Pencil (0.5 mm)
๏OLDER (pre 1970)
–Ruling Pen
–Compass
–Pencil (2mm)
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Computer-Aided
Drafting (CAD) Manufacturing (CAM)
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Rendering and Animation
2008: Xbox 3602017: Xbox One X
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Solid Modeling
๏ Defined by:
- Boundary representation (B-rep)
- connected surfaces create an
inside and outside of the part
๏ Have these properties:
- Mass
- Volume
- Moment of inertia
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Applications of Solid Modeling (Solidworks):
- Engineering (perform structural, thermal, etc. analysis on model)
- FEM: Finite Element Method-breaking part into smaller, less
complex parts that can be better analyzed
- Manufacturing (allows Computer-Aided Manufacturing program to design
the way a product will be made)
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Mesh Modeling
๏ Defined by:
- Edges
- Polygonal faces
๏ No mass property
๏ Advantages:
- Smoothness
- Shading
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Applications of Mesh Modeling (Maya)
- Film and Advertising Industries (animations look great with mesh models)
- Medical Field (mesh models of human anatomy)
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Coordinate System
๏ Cartesian
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Primitive Shapes
๏ Critical to know basic shapes in order to accurately
represent the part that is being modeled
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Some Properties to keep in mind…
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Extruding a primitive shape allows you to make some of
these 3D objects…
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One of the basic steps…Extrusion
๏ Linear Extrusion: starts with closed polygon (profile) drawn
on a plane, and then swept along a defined path for a
defined length
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Constraints
๏ Defined as a limitation or restriction
๏ Apply constraints to any geometry drawn in Solidworks (under
the discretion of the user)
15
*Constraints in Solidworks look
like this.
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Implicit Constraints
๏ Geometric relationships
implied by the way the
profile is drawn and
interpreted by
Solidworks
- Note: Solidworks only makes
closed profiles, so your profiles
must have closure.
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More Implicit Constraints17
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Explicit Constraints
๏ Defined by the operator
- Dimensional constraints: assigning a specific
length to a line, radius to a circle, etc.
- Geometric constraints: specifying the ways in
which lines/shapes/features relate to one
another
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Levels of Constraint
๏ Fully constrained
- Every element has been completely dimensioned/specified
๏ Underconstrained
- Not all elements are dimensioned/specified (leaves interpretation up to
Solidworks)
๏ Overconstrained
- Adding a new constraint would conflict with existing constraints (Solidworks
won’t let another dimension be added)
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Example of an Overconstrained Sketch
Driven Dimension: is driven by the model *Changing the model changes this driven dimension value
Driving Dimension: drives the model *Changing this driving dimension changes the model
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Center point
of line
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Path-based and Revolute Extrusions allow you to
make some of these 3D objects….
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Path-based Extrusion
๏ Sweep: create a profile and
define its path to be
extruded along
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Revolute Extrusions
๏ Start with a drawn profile and define an axis of rotation
about which the profile is rotated for a defined angle.
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Activity
๏ Complete the Lesson 1: Parts tutorial
- How to get there: Tutorials>Getting
Started>Lesson 1: Parts
๏ Complete Revolves and Sweeps
tutorial
- How to get there: Tutorials>Basic
Techniques>Revolves and Sweeps
Let me know if you have any questions!