User:ABL1993/ENES-100/Project 2

Research
My objective for this week was to research different bridges and decide which type will be best for my starting point

 After some brainstorming I realize that there are 2 possible bridges that could simple, done in a timely matter and learn somthing from.

Beam

A bridges are the simplest structural forms for bridge spans supported by an abutment or pier at each end. No moments are transferred throughout the support, hence their structural type is known as simply supported.(1) piers. Although a beam bridge is simple and could easily constructed before the deadline I would like to do something that would more of challenge and that would give me more work on.

Truss

A bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements forming triangular units.(1) Truss bridge are known for holding a lot weight and being finely designed in their structure,however they are not very attractive so in this project I want to create a design that will be firm in structure and have an appealing appearance.

I noticed that truss bridge are made with triangles and that is because triangles are firm in shape meaning that unlike a square if you wanted to brake by compression it would be more difficult due its acute structure.

https://www.youtube.com/watch?v=llhSEwUE6cY

Based on this video the truss will need a few basics materials:

- Sticks

- Glue gun

- Cable wire

I decide that I want to use the same materials instead rather than using sticks I would spaghetti to experiment how effective triangles would be with something as flimsy as spaghetti.

My New Steps
This week my plan was to start on the prototype of the Truss draw bridge but first I started off by drawing dimension of the length,height,width and depth of the truss itself

I took two wooden blocks to support the truss of the bridge My problem was figuring out what tool to use to get the bridge to go up.

Video I Found To Assist Me With My Problem []

I noticed that she had to keep a syringe under the beam of the bridge at 45 degree so that the bridge will go up as the water from the tube pushes the syringe upward.

Future Plan

 * Reconstruct the bridge so that I can find way to build a syringe under bridge


 * Use another frame other than Cardboard


 * Figure out what will hold the bridge in place

How I Made The New Bridge
Constructing the first prototype  gave me an idea of how I wanted the prototype will look and how I was going to get the bridge to go up. I create a new frame made out of white foam like material because I felt it was easier to cut out of than cardboard and instead of using a wooden block I decided to use a foam as the base.

 File:Hsdjfdifds.JPG|Side View

File:New base for a model truss bridge.jpg|Front View 

One of the group pointed out that a rode will be needed to help move the bridge up and down soI decided to pierce a hole into the side of the stands and the bridge were the rode will go which allow the bridge to move up and down.

 File:THs.JPG|The stands that support the bridge File:Ghff.jpg|The rode that was used 

Putting the materials together

I took the frames of of the bridge and inserted the rode into the holes of the stands and frame



Next Steps
We want to install a syringe under the bridge in order to move the bridge up

Similar to this design []

But we had to find a syringe that had enough presser to push the bridge upward

So we found 60 ml syringe which can contain enough water to push the bridge upward picture  image:Imyyft.jpg|  We use water for he syringes to provide enough presser to push the bridge up Issues I didn't quit no what was going to hold the syringe in place so our group member suggested that we take piece of foam that could hold the syringe together

 File:Jdjd.jpg|thumb|Foam used to hold syringe in place  I then took this piece and glue it to the board

Results
 File:Fgjkau123.jpg|



Our Final Prototype
We finish making the bridge but decided to to take it step further with little time we had. We took the frame and replace it with a truss like frame There two reason why added these triangles
 * 1) More of light weight
 * 2) And it has a more truss like design to it

 File:Final Bridge.jpg| 

We also decided to change the placement of the syringe

 File:Rugh.jpg|100px|Rugh  The hole is were we will place the tube filled with water that will go into the syringe

My attempt at making a servo motro CAD
 File:Dgfgdfg.png|I start off by making a circle File:78kmfwe.png|I then extrude the circle File:78jhgdf.png|I drew a outside outside of the sqaure and extruded it forward a File:89tjutgj.png|The result File:78956 TDFTR.png|Drew a hole File:07745 GHT.png|I made the hole extrude backwards File:RTTYRTY.png|Made a smaler hole File:Tyrtyrty.png|Extruded it File:=-fk.png|Made another circle File:54698ergrg.png|Created a new circle File:Thedrd.png|Then I have this as a result File:565ht4.png|Result File:Ueriower.png|I thread the cylinder to make it into a screw File:Tyrtyrty 234.png| I created a hole File:Sdfdf.png|Place the screw in the hole File:24546 GGHFGH.png|Fillet the edge of the cylinder

 Through this I was able to learn how to:
 * Extrude a lot
 * Coil a smaller cylinder to make a screw
 * Create a hole in the block for the screw
 * Fillet the edge of the cylinder

Activties I went to after November 17

 * /Low Charge Natural Refrigerant/

UMD Transfer Session/
https://us-mg6.mail.yahoo.com/neo/launch?.rand=do3o2c3sp45eo#7993389194/The Power Point