What supervisors? Is this for a schoolwork project? Or are you tasked with doing this in real life at work?salamikorv said:
I'm sensing this is a school project.berkeman said:
Yea its a school project, no its not for real life work. We get help from the studentassistents in the lectures all the time. They give us direct methods that we can use to make our parts, thats how i determined the bearings because its thanks to them. But ive been sick this week, still i am, so i havent been able to go to school and ask for help and its been difficult to understand how i can get the tension for the bolts when i have two forces directed in two different directions.berkeman said:
Oh alright. @erobz can you still help?berkeman said:
Yes it is.erobz said:
what are the missing dimensions?salamikorv said:
1.5m to the left, i mean thats the length from the left end of the beam to the point where you drew the upward force, and 0.75m is the length thats lefterobz said:
Explain how its in static equilibrium with an unbalanced horizontal force component from the support and the tension on the pulley?salamikorv said:
The beams are in static equilibrium since they are in rest state but yeah i guess with the pulleys its not in equilibrium once it starts to lift, when we stop the winch then its in static equilibrium.erobz said:
The forces in the horizontal direction are unbalanced. The beam is not in static equilibrium with the loading your supervisors told you was correct.salamikorv said:
?? Do you wan't to find the actual loading on your mounting bracket?salamikorv said:
Im fine with the forces i have and what the studentassistant has told us, no offense by the way. I dont want to say my mates calculations are wrong since he has got alot of help from the assistants , if i asked for help of an exercise in my book with these information given would you just ignore the information given and find it yourself? (poorly explained but i think you understand what im saying here). Just assume its 30kN directed as i drew it and 20kN on the side like i drew it, its alright. All i wanna understand is how to determine the bolts.erobz said:
Sizing the bolts requires having as close to an accurate loading as reasonably possible. If you don't care about having accurate loads, then why do you care about sizing the bolts accurately?salamikorv said:
Hhahaha yeah but im pretty confident he hasnt done any mistakes. Look, i can discuss this with him later on but i came here to get help from the problems i got, and that is to determine the bolts. If you re-did the calculations and got something else thats fine, but im only for understanding how to get the bolts. I dont get why you are so passionate about re-doing it, theres plenty of cranes with those exact loads he got, why cant you just help me understand how to get dimension the bolts, not even the loading but the general steps as in the formulas like Baluncore showed, i didnt give him numbers but he showed one way of determing the bolts. Let the force thats in compression be called K, no number, and the other force Q, so i got two loads. What principle/method do i have to use in order to determine the bolts?erobz said:
