francesco aloschi 0 Report post Posted February 4 hi gys i have aproblem with optistruct. i'm doing a modal analysis but it gives me the folowing error " *** See next message about line 74 from file: C:/Users/francesco/Desktop/tank200L_correcteted.fem "GRID 2083 -657.01746.2322 1305.261" *** ERROR # 1020 *** in the input data: Missing BEGIN BULK or line before BEGIN BULK has trailing comma. how can i solve the problem? it is a simply eigen value problem analysis. tank200L_correcteted.fem tank200L_correcteted.hm tank200L_correcteted_001.out Quote Share this post Link to post Share on other sites
Hyperman 286 Report post Posted February 4 Hi, cannot access the files, but a similar error was already posted: Quote Share this post Link to post Share on other sites
jiaru72300 3 Report post Posted April 1 There are many basic errors in your model. For example: 1、 the mesh quality is too bad 2、 BCS were placed in the EIGRL loadcllector The following attachment is a model that can be calculated. tank200L_correcteted_done.fem Quote Share this post Link to post Share on other sites
