Yixiong Jing currently works at the Department of Civil and Earth Resources Engineering, Kyoto University. Yixiong does research in Civil Engineering. Now I am interested in using image processing including some of the most advanced convolutional neural networks for health monitoring.
I am working on programming a skew bridge, however the opensees kept on giving me such warning
WARNING PlainHandler::handle() - constraint matrix not identity, ignoring constraint for node 513
WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 7
Can any one help me fix this problem?