- #1
MasterG
- 7
- 0
Hi, my name is Goran and I have a physics/mechanics problem.
I'm a 3D artist and I do 3D CAD or non CAD models for a company I work at. New job I got is basically a engineer because I'm about to get my mechanical engineering degree, but it has been a long time I actually calculated something so I need help and it is really simple for someone that knows what to do.
I've read the forum and found some solutions and calculations for my problem but since my English is not the best in the world I ask for your help and consideration.
SO here is the problem.
We built a firefighter vehicle from IVECO 80E18D chassis. Okay, so I constructed the frame that holds the box at the back of the chassis, tank with 1500 L capacity and all the shelves, boxes, lights and stuff a firefighter needs to have.
The metal structure= 300 kg + 100 kg (all the sheet metal)
The tank= 1500 kg (of water) + 20 kg (weight of tank)
The crew is 3 (front) + 4 (back) = 7 * 75kg = 525 kg
The pump = 150 kg
Now I need to calculate the axle loads and see if it is within the manufacturers permissions. We actually went to measure it on scale AFTER MODIFYING IT (adding the structure, tank, pump and all that so finished truck) and the results are like this:
WITHOUT ANY FLUID IN TANK (without crew)
front axle 2690 kg
rear axle 2850 kg
WITH FLUID IN TANK (without crew)
front axle 2910 kg
rear axle 4160 kg
So, since the manufacturer specifies the front axle limit is 3600 kg and the rear axle limit is 5800 kg we should be fine, right? It basically a statics problem, but like I said, it has been a long time since I used mechanics calculations.
http://tinypic.com/r/hv71wh/8
I'm a 3D artist and I do 3D CAD or non CAD models for a company I work at. New job I got is basically a engineer because I'm about to get my mechanical engineering degree, but it has been a long time I actually calculated something so I need help and it is really simple for someone that knows what to do.
I've read the forum and found some solutions and calculations for my problem but since my English is not the best in the world I ask for your help and consideration.
SO here is the problem.
We built a firefighter vehicle from IVECO 80E18D chassis. Okay, so I constructed the frame that holds the box at the back of the chassis, tank with 1500 L capacity and all the shelves, boxes, lights and stuff a firefighter needs to have.
The metal structure= 300 kg + 100 kg (all the sheet metal)
The tank= 1500 kg (of water) + 20 kg (weight of tank)
The crew is 3 (front) + 4 (back) = 7 * 75kg = 525 kg
The pump = 150 kg
Now I need to calculate the axle loads and see if it is within the manufacturers permissions. We actually went to measure it on scale AFTER MODIFYING IT (adding the structure, tank, pump and all that so finished truck) and the results are like this:
WITHOUT ANY FLUID IN TANK (without crew)
front axle 2690 kg
rear axle 2850 kg
WITH FLUID IN TANK (without crew)
front axle 2910 kg
rear axle 4160 kg
So, since the manufacturer specifies the front axle limit is 3600 kg and the rear axle limit is 5800 kg we should be fine, right? It basically a statics problem, but like I said, it has been a long time since I used mechanics calculations.
http://tinypic.com/r/hv71wh/8