Hey everyone,
I have a steel W10x49 beam with a distributed pressure of 80 psi being applied to it (over a length of 90"). The beam is fixed at both ends. The pressure is applied and is held anywhere from 30 min to 12 hours.
I was looking through a machine design book (Mott) and it looked like this was repeated, one-direction fluctuating stress, since I will be applying and removing the load many times.
Since I already have this material, this is only really for my own interest. But what is the proper way to design for this type of stress? Is there a way to determine how many cycles it can go through before it might fail? The book mentions the Goodman method and such, but I wasn't really sure how to apply it. Thanks a lot.
I have a steel W10x49 beam with a distributed pressure of 80 psi being applied to it (over a length of 90"). The beam is fixed at both ends. The pressure is applied and is held anywhere from 30 min to 12 hours.
I was looking through a machine design book (Mott) and it looked like this was repeated, one-direction fluctuating stress, since I will be applying and removing the load many times.
Since I already have this material, this is only really for my own interest. But what is the proper way to design for this type of stress? Is there a way to determine how many cycles it can go through before it might fail? The book mentions the Goodman method and such, but I wasn't really sure how to apply it. Thanks a lot.