hi,
i am doing analysis using 0D mass elements, but actually i am not aware about the difference between coupled, grounded and lumped mass, and what is the practical use of these 0D properties??? plz give sufficient advice, buz i am a beginer in FEA analysis.....
i am doing gap element problem in nastran patran, but an error is occuring while doing the analysis, i am doing non linear analysis. fatal error 2084 is comming. actualy i am a beginer in FEM analysis. so plz suggest a method for solving this problem.