w154
Automotive
- Dec 22, 2009
- 3
I am looking for help !
I have "accumulation rainflow" data for propshaft torques, and I need to understand the overall "damage" that this would cause. My data is a matrix of Mean Torque and Torque Amplitude, with the individual cells showing the accumulated cycles at each condition.
If all the data was simple bi-directional fatigue (i.e. with mean torque =0), then I think I know how to combine the data following miners rule. But I am not sure how to manage offset torques. Should I use something like the Goodman rule? and if so how do I apply it?
Thanks for any advice !
I have "accumulation rainflow" data for propshaft torques, and I need to understand the overall "damage" that this would cause. My data is a matrix of Mean Torque and Torque Amplitude, with the individual cells showing the accumulated cycles at each condition.
If all the data was simple bi-directional fatigue (i.e. with mean torque =0), then I think I know how to combine the data following miners rule. But I am not sure how to manage offset torques. Should I use something like the Goodman rule? and if so how do I apply it?
Thanks for any advice !