Theo Jansen Machanism Matlab Code Download Updated

The matlab code for the Theo Jansen mechanism has been updated and is now available for download. Also, in exchange for using my code I would appreciate your help by subscribing to and promoting the site and sharing it with your family, friends and coworkers. Please subscribe to my YouTube page and consider following me on Twitter. Thanks!

Theo Jansen matlab code file download

How to simulate rolling kinematics tutorial

How do you simulate wheels rolling down a hill or track in CATIA? A reader recently asked if I could put together a tutorial for the kinematics rolling simulation that I created. This may not be extremely detailed but should give you a pretty good idea of the steps to take when trying to simulate rolling in CATIA. This was one of the preliminary tests I ran before attempting to simulate my entire roller coaster model. Download the kinematics rolling powerpoint tutorial here.







How to simulate rolling in CATIA DMU kinematics workbench tutorial.ppt download

AutoCAD 2008 Video Tutorial

Here is a pretty good video tutorial for using AutoCAD 2008 which includes the Autocad interface, toolbars, pull-down menus, command line, accessing commands.

What are typical scales used in drafting?

•2:1 – double scale – 1” on the drawing = ½” in actual life

•1:1 – full scale – 1” on the drawing = 1” in actual life

•1:2 – half scale – 1” on the drawing = 2” in actual life

•1:4 – quarter scale – 1” on the drawing = 4” in actual life

•1:10 – 1 tenth scale – Etc..

•1:20 – 1 twentieth scale – Etc..

How do you deal with a large assembly in CATIA?

Here are a few notes on the best practices for dealing with a large assembly in CATIA V5 (although this information can also be applied to other CAD systems as well).

•Hide/Show

•Temporarily hide model

•Hide a partial model

•Visualization mode

•DMU Analysis

•Creating Drawings

•Node Deactivation

•Update BOM

•Update Assembly constraints

•Unload

•Design in context

•Deactivate Component

•Using knowledgeware rule

•Improve Graphic Performance

•Good = Hide Component

•Better = Deactivate Node, Visualization Mode

•Best = Unload unneeded components

•Improve CPU Performance

•Unload unneeded components

•Use Deactivate component via Knowledgeware

•You can only modify geometry when it is fully loaded and activated

 

Robocoaster Model

I constructed a recreation of a Kuka robocoaster in CATIA. I used the car from my cantilevered roller coaster simulations to save time. The track is created using three sketches with laws (one overhead, one side profile, and one for banking). I made this in about a day so please excuse the lack of detail. The purpose was more to show proof of concept that this was possible to create with CATIA.

For the simulation, I used the DMU Kinematics workbench. There are four user input commands to (1) drive the robotic arm down the track (2) horizontal rotation about the z axis (3)vertical rotation of the upper arm (4) rotation of the seats about the upper arm axis. In fact, in one of the video clips there is a fifth command- the rotation of one of the domes on which video would be projected, similar to the Harry Potter ride at Universal Orlando.

What does a CAD Designer do?

What does a typical CAD designer do? The responsibilities of a CAD Designer are the following:

Design 3D models and assemblies in various CAD packages including CATIA V5, UG‐NX, SolidWorks, Pro/E or

Inventor from conceptual designs, reverse engineering layouts, or legacy data.

 

Activities and duties:

The following duties and responsibilities are illustrative of the primary functions of this position and are not

intended to be all-inclusive:

• Create manufacturing drawings of assemblies and models including GD&T and B.O.M. information
  
• Interpreting 2D drawings for conversion to 3D models and assemblies
  
• Successfully convert 3D models from one CAD format to another.
  
• Create or re‐master new 3D models from conceptual designs
  
• Use specialized modules in CAD packages such as FTA, SMD, Piping/Tubing as required
  
• Track own progress against bid hours using sources available to ensure project deadlines are met
  
• Make decisions concerning personal time management and task prioritization to deliver quality service,
  

on time and under budget

 

KNOWLEDGE, SKILLS AND ABILITY:

• Ability to check manufacturing drawings to determine proper fit and function, correctness and
  
• completeness of information
  
• Must have strong mechanical aptitude, good reasoning and problem solving skills
  
• Knowledge of Data Management and Configuration Management principles
  
• Strong verbal and written communication skills
  
• Ability to work in a team environment
  
• Ability to function with minimum supervision