Maximum load given yield strength in Abaqus cae

Hello

I'm new to Finite Element Analysis and Abaqus cae.

I have created a model of a crane arm in Abaqus and I intend to use it to calculate the maximum load that it can tolerate before plastic deformation. I meshed the model and gave it a random load. The maximum principal stress seen in the model is much beyond the yield strength.

Can anyone tell me how to obtain the maximum load before plastic deformation without using a very inane procedure of trial and error?
Pardon my ignorance.

Thanks in advance.