Hi,
I performed a buckling analysis for a composite panel obtaining several closely spaced eigenvalues. Then i did a static riks analysis for study the non linear behavour of the structure. Theorically the load proportionally factor has to be the same as the correspondant eigenvalue, is it right? because if the eigenvalue is the factor you have to multiply your load to reach the buckling, the LPF is the factor you apply to your load to get the collapse state, becase after buckling the structure lose stiffness, and the analysis can not continue. Some times the LPF is similar to the first eigenvalue calculated, but sometimes this doesnt happen.
What is the real meaning of this?how can I understand this?
Thank you in advanced.
I performed a buckling analysis for a composite panel obtaining several closely spaced eigenvalues. Then i did a static riks analysis for study the non linear behavour of the structure. Theorically the load proportionally factor has to be the same as the correspondant eigenvalue, is it right? because if the eigenvalue is the factor you have to multiply your load to reach the buckling, the LPF is the factor you apply to your load to get the collapse state, becase after buckling the structure lose stiffness, and the analysis can not continue. Some times the LPF is similar to the first eigenvalue calculated, but sometimes this doesnt happen.
What is the real meaning of this?how can I understand this?
Thank you in advanced.