2008
Table Of Contents
- Contents
- Part I Overview
- 01 About AutoCAD Mechanical
- AutoCAD Mechanical Software Package
- Leveraging Legacy Data
- Starting AutoCAD Mechanical
- Accessing AutoCAD Mechanical Commands
- AutoCAD Mechanical Help
- Product Support and Training Resources
- Design Features in AutoCAD Mechanical
- Mechanical Structure
- Associative Design and Detailing
- External References for Mechanical Structure
- Associative 2D Hide
- Autodesk Inventor Companion Support
- 2D Design Productivity
- Engineering Calculations
- Machinery Systems Generators
- Intelligent Production Drawing and Detailing
- Detailing Productivity
- Annotations
- Standard Mechanical Content
- Standard Parts Tools
- Collaboration
- 02 Commands in AutoCAD Mechanical
- 03 New and Revised Commands
- 01 About AutoCAD Mechanical
- Part II Design and Annotation Tools
- 04 Working with Templates
- 05 Using Mechanical Structure
- 06 Working with Layers and Layer Groups
- 07 Designing Levers
- 08 Working with Model Space and Layouts
- 09 Dimensioning
- 10 Working with 2D Hide and 2D Steel Shapes
- 11 Working with Standard Parts
- Key Terms
- Working with Standard Parts
- Inserting Screw Connections
- Copying Screw Connections with Power Copy
- Creating Screw Templates
- Editing Screw Connections with Power Edit
- Working with Power View
- Deleting with Power Erase
- Inserting Holes
- Inserting Pins
- Turning Off Centerlines in Configurations
- Hiding Construction Lines
- Simplifying Representations of Standard Parts
- 12 Working with BOMs and Parts Lists
- 13 Creating Shafts with Standard Parts
- Key Terms
- Creating Shafts
- Configuring Snap Options
- Configuring Shaft Generators
- Creating Cylindrical Shaft Sections and Gears
- Inserting Spline Profiles
- Inserting Chamfers and Fillets
- Inserting Shaft Breaks
- Creating Side Views of Shafts
- Inserting Threads on Shafts
- Editing Shafts and Inserting Sections
- Replacing Shaft Sections
- Inserting Bearings
- 14 Calculating Shafts
- Part III Engineering Calculations
- Part IV Autodesk Inventor Link
- Appendix A Layer Specifications
- Appendix B Title Block Attributes
- Appendix C Accelerator and Shortcut Keys
- Index
Key Terms
DefinitionTerm
The moment of all forces that act on the member to the left of a section (a point
along the member where bending moment needs to be calculated) taken about
the horizontal axis of the section.
bending moment
A curve representing the vertical displacement of different points along the
member subjected to a load.
deflection line
A load or force that is exerted over a certain length.distributed load
A support that prevents translation as well as rotation about all axes.fixed support
Force or moment acting on a member or body.load
An important property of areas and solid bodies. Standard formulas are derived
by multiplying elementary particles of area and mass by the squares of their
moment of inertia
distances from reference axes. Moments of inertia, therefore, depend on the
location of reference axes.
A support that prevents rotation in all axes, but allows translation along one
axis.
movable support
A force that is concentrated on a point.point force
Calculating Moments of Inertia and Deflection Lines
The measurement unit for the moment of inertia is mm4 or inches4. These
are geometric values, which appear in deflection, torsion, and buckling
calculation. AutoCAD Mechanical uses the result of the moment of inertia
calculation for the deflection line calculation.
Moment of inertia calculations are performed on cross sections of beams or
on other objects that can be represented as closed contours. Calculations can
be performed on a cross section of any shape, as long as the geometry of the
cross section forms a closed contour.
318 | Chapter 15 Calculating Moments of Inertia and Deflection Lines