At the international conference (ECCOMAS Thematic Conference) "Highly Flexible Slender Structures" in Kaiserslautern (22.-26.09.2025), Dr.-Ing. Jonas Boungard successfully presented the current research results of the Institute of Structural Analysis in the field of the validity of kinematic assumptions in beam theories. During the conference there was a fruitful exchange with other scientists. We are looking forward to the next HFSS 2027.