三维框架结构拆了一根柱子，结果周期算不下去，特征值出问题，求教是什么原因？

thegiantboss

三维框架结构拆了一根柱子，结果周期算不下去，特征值出问题，求教是什么原因？FullGenEigenSolver::solve() - the eigenvalue 43 is complex with magnitude 1.133
FullGenEigenSolver::solve() - the eigenvalue 44 is complex with magnitude 1.133
FullGenEigenSolver::solve() - the eigenvalue 45 is complex with magnitude 1.09479
FullGenEigenSolver::solve() - the eigenvalue 46 is complex with magnitude 1.09479
FullGenEigenSolver::solve() - the eigenvalue 49 is complex with magnitude 1.04547
FullGenEigenSolver::solve() - the eigenvalue 50 is complex with magnitude 1.04547
FullGenEigenSolver::solve() - the eigenvalue 51 is complex with magnitude 0.901042
FullGenEigenSolver::solve() - the eigenvalue 52 is complex with magnitude 0.901042
FullGenEigenSolver::solve() - the eigenvalue 55 is complex with magnitude 1.11699
FullGenEigenSolver::solve() - the eigenvalue 56 is complex with magnitude 1.11699
FullGenEigenSolver::solve() - the eigenvalue 58 is complex with magnitude 0.997201
FullGenEigenSolver::solve() - the eigenvalue 59 is complex with magnitude 0.997201
FullGenEigenSolver::solve() - the eigenvalue 61 is complex with magnitude 1.0028
FullGenEigenSolver::solve() - the eigenvalue 62 is complex with magnitude 1.0028
FullGenEigenSolver::solve() - the eigenvalue 63 is complex with magnitude 1.0003
FullGenEigenSolver::solve() - the eigenvalue 64 is complex with magnitude 1.0003
FullGenEigenSolver::solve() - the eigenvalue 139 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 140 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 149 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 150 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 151 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 152 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 153 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 154 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 163 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 164 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 165 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 166 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 167 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 168 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 171 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 172 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 173 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 174 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 175 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 176 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 177 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 178 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 179 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 180 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 187 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 188 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 193 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 194 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 199 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 200 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 203 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 204 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 205 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 206 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 207 is complex with magnitude 0.999999
FullGenEigenSolver::solve() - the eigenvalue 208 is complex with magnitude 0.999999
FullGenEigenSolver::solve() - the eigenvalue 209 is complex with magnitude 1
FullGenEigenSolver::solve() - the eigenvalue 210 is complex with magnitude 1
DOF_Group::setNodeAccel: 0 Node Pointer

yiqguan

很好的话题