university of colorado - intro to aerospace structures (asen 3112) - fall 2013
TRANSCRIPT
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
For externally pressurized vessels (e.g. a submarine hull) the foregoing stress formulas should be used with extreme caution, becauseanother failure mode comes into play:
Instability due to wall buckling
Buckling is covered in Part 4 of this course
Warning
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
Digression: “Arrow Conventions” for Forces, etc
Are these equivalent?
Yes, and unambiguous
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
How About This One?
What does it mean?
Hard to say beforehand. Depends on convention(s).Best is to avoid “double negatives” in technical work
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
Double Negatives are Ambiguous ...
You aint’t going nowhere
Does it mean You are not going anywhere or You are going somewhere
A. It depends on context
University of Colorado - Intro to Aerospace Structures (ASEN 3112) - Fall 2013
In This Context (Bob Dylan 1967)
Obviously here You are not going anywhere
Buy me a flute and a gun that shoots, tailgates and substitutes,Strap yourself to the tree with roots,You aint’t goin’ nowhere.