Numerical simulation technology for mechanical property analysis of sandwich panel connections in plane

Sandwich panel connections always restrict the application of steel folded core sandwich panels in ship structure. In order to promote the study of sandwich panel connections research and design,mechanical models for analysis of yield strength,ultimate strength and stability will be researched in this paper. And then the numerical simulation technology of modeling methods,element size,loading methods and initial imperfection factor and so on were studied. Through these research to determine: Shell-ShellContact modeling method can improve the calculation efficiency and precision; selection of element size should be based on the computing resources as the main consideration factor; small size structure models can be used to research ultimate strength and loading time between 5 ~ 10 T( T is structure natural period) can improve the calculation efficiency and precision; initial imperfection factor applied 5% shell thickness on the structure can guide structure into buckling mode in analyzing the ultimate compressive capacity.