HigherEd 2.0

This is our first introduction to the idea of stress. In this module, we examine stress at a point and you’ll notice that we use all the important tools from Statics to make these calculations. I encourage you to check out this module in one or more ways:

Review the PDFs I sent […]

 

 Module 2: Stress at a Point: Play Now | Play in Popup | Download

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These are all about Mohr’s circle, and they encapsulate most of the good discussion from class. The stress transformation and max/min process may be a little mysterious, but hopefully these videos give you the 10,000 foot view of Mohr’s circle and the usefulness of stress transformations.

 

 Lecture Module 23, April 7 2008: Play Now | Play in Popup | Download

 

 Lecture Module 24, April 11 2008: Play Now | Play in Popup | Download

 

 Lecture Module 25, April 18 2008: Play Now | Play in Popup | Download

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Yes, I know, I have been a bit delinquent on posting recordings of the lectures. I will try to remedy this soon, but I’ve been a bit too time constrained to create a separate time to record.
In the meantime, blow off some steam with Insurgo. It’s a truss-building scheme in which […]

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It’s taken some time, but here is the first introduction to stress transformations, Ch. 9. This is leading us up to Mohr’s circle (Wikipedia entry, not very useful, maybe an opportunity for you to flesh it out?), which we will introduce in class today and/or Monday. The key point about stress transformations, which […]

 

 Lecture Module 22, Mar. 31 2008: Play Now | Play in Popup | Download

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This podcast details the beginning of Chapter 8 and focused almost exclusively on pressure vessels. The derivation of the stress equations is pretty straight-forward, relying only upon FBDs cut very judiciously from the whole structure. Remember also that pressure vessels are the first structures we’ve examined which have more than one stress present. […]

 

 Lecture Module 19, March 21 2008: Play Now | Play in Popup | Download

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This is a good one dealing with shear flow (Wikipedia, not that helpful…an opportunity for one of you to author that page?). Anyhow, this lecture highlights the similarities to and differences from shear stress (Module 17). The calculations, as usual, revolve around choosing the correct A’ on which to calculate Q. Have […]

 

 Lecture Module 17, Mar 14 2008: Play Now | Play in Popup | Download

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This is also a good one, and it occurred to me that this kind of lecture really encapsulates the whole notion of how we are constructing our course. As you all know, I like the idea of presenting multiple perspectives on a topic, and then encouraging you to pick the one that makes the […]

 

 Lecture Module 17, March 13 2008: Play Now | Play in Popup | Download

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This module includes information about concrete-reinforced beams. But it’s somewhat incomplete…the concepts and the basic notion of how to do the transformation are presented. But to see the full approach in action, check out the video solutions on the publisher’s website. Good stuff.

 

 Lecture Module 16 (part 2), Mar. 12 2008: Play Now | Play in Popup | Download

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This is the first part of composite beam (this one, not this one) analysis. The idea here is to think of this question: if I want to make the structure out of a single material…how much of material 2 do I need to support the same amount of load as material 1? […]

 

 Lecture Module 16 (part 1), Feb. 27 2008: Play Now | Play in Popup | Download

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Modules 14 and 15 contained much the same information, so they are posted here as the singular “module 15″. The key points are related to unsymmetric bending. The small aside about product of inertia which is certainly useful but not compulsory for you to fully understand. Moreover, I think the discussion we […]

 

 Lecture Module 15, Feb. 25 2008: Play Now | Play in Popup | Download

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