PUMA publications for /user/itke/node%20analysisFri May 22 14:26:47 CEST 2020Journal of the Korean Association for Spatial Structuresjun387 – 95Investigation and Numerical Analysis of Node Connectors in Free-Form Spatial Structures720072007 analysis connector engineering free-form from:petraheim hwang itke knippers node numerical park peer-reviewed spatial structur The recent completions of free-form spatial structures provide us a very attractive form. To realize such an extraordinary shape, it is absolutely necessary that the connector systems have to be investigated the characteristics of the systems and analyzed with a practicable method. In this context, this research consists of not only literature research but also numerical analysis with selected connector systems, which was adopted in real free-form spatial structures. For numerical analysis, especially, finite element analysis (FEA) is performed with a various test parameter using a commercial program ANSYS. Consequently, the general characteristics of node connectors the moment-rotation-curves are presented by considering a large deformation effect as well as a multi-linear material properties.