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How a beam resists bending. (Moment of Inertia)

Rubber Band simulation of a beam subjected to bending.

In the post “Stress, Strain and finding center“, I talked about simple compression and tension and how beam or column elongates under tension and shrinks under compression. In the elastic portion of the stress strain curve the beam is acting like a very very strong

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Buckling of the Popsicle Crane Boom

A beam buckling

We have put quite a bit of effort in understanding the forces on the crane boom. Now we need to start figuring out what we are going to do about them. (Refer to the post crane-boom-analysis-part-2) The fact that the whole boom is under compression loading explains a lot to me

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A problem with scaling, and the popsicle stick project

Picture 1: Getting a feel for the strength of glued popsicle sticks

The whole idea of working with popsicle sticks was that they are relatively inexpensive and require little work space. I thought that it may be helpful to people little money and space to work with something to get some experience designing and

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Episode 41 – Framing a building

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In this episode I am going to show how we built the frame of a building. The main purpose of this is to show how wood is “stacked” so the position of the wood uses the strength of the wood while the nails are mostly nothing more than pins keeping the wood from moving.

This

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Episode 12 – Introduction to Forces

This is the first of several episodes that will be talking about materials and the forces on them. In this episode we will be talking about Newton’s three laws of motion and specifically about Newtons 3rd law – equal and opposite reaction force.

Newton’s laws:

A body at rest will remain at rest unless acted

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