Dear All,
I am simulating Lipped channel beam in shear. I am using linear perturbation BUCKLE analysis (eigen value solver). when I give the load as displacement induced loading, I am getting the eigen values but when I give the load as forced induced loading, it is showing the error as stated below.
DIFFERENTIAL STIFFNESS MATRIX IS COMPLETELY NULL. THE EIGENPROBLEM CANNOT BE SOLVED. IN A *BUCKLE ANALYSIS THE MOST LIKELY CAUSE IS THAT A NONZERO LOADING PATTERN WAS NOT SPECIFIED VIA *BOUNDARY, *CLOAD, *DLOAD, ETC,. SEE Eigenvalue Buckling Prediction IN THE Abaqus/Standard USERS MANUAL.
Please advice.
Thank you.
I am simulating Lipped channel beam in shear. I am using linear perturbation BUCKLE analysis (eigen value solver). when I give the load as displacement induced loading, I am getting the eigen values but when I give the load as forced induced loading, it is showing the error as stated below.
DIFFERENTIAL STIFFNESS MATRIX IS COMPLETELY NULL. THE EIGENPROBLEM CANNOT BE SOLVED. IN A *BUCKLE ANALYSIS THE MOST LIKELY CAUSE IS THAT A NONZERO LOADING PATTERN WAS NOT SPECIFIED VIA *BOUNDARY, *CLOAD, *DLOAD, ETC,. SEE Eigenvalue Buckling Prediction IN THE Abaqus/Standard USERS MANUAL.
Please advice.
Thank you.
