Upload

Loading...

WTC Modeling Instruction & Testing in the Real World

4,159

Loading...

Loading...

Transcript

The interactive transcript could not be loaded.

Loading...

Loading...

Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Uploaded on Dec 2, 2010

Here is a overblown but defective description of collapse modeling by a NASA scientist followed a similar real model showing the actual results which our brilliant scientist failed to predict. In addition there is even worse example modeling presented by MIT which was shown on national television in 2002.

Gravitational collapse with crushable supports between 2 in. diameter washers weighing approx. 1.7 oz. each. The thickness of the washers does vary, they are sorted so the thinnest at the top and thickest at the bottom. 3 of the thinnest are about equal 2 of the thickest. So the weights range from 1.4 to 2.1 ounces. The intermediate supports are loops of paper 9/16 inches tall. The top 11 supports are single loops. The next 17 are double loops and the bottom 5 are triple loops. The falling mass consists of 4 washers out of a total of 33 or 12%. So the falling mass can sustain damage just like the stationary stack.

The model supported itself for three days before the drop was taped so the loops can sustain the static load.

I have tested the single loops for what was necessary to crush a loop. Dropping 4 washers from 4 inches will crush a single loop. It takes 0.1182 joules to crush single loop

The dowel is 4 feet tall and less than 3/4 in thick and there is nearly a 1/16th gap around the dowel to a washer. Some rubbing is inevitable.

Notice that loop 11 which is a single loop remains intact. So the collapse was not stopped because of double loops.

  • Category

  • License

    • Standard YouTube License

Loading...

When autoplay is enabled, a suggested video will automatically play next.

Up Next


Sign in to add this to Watch Later

Add to