§16§§This book commemorates the 80th birthday of Prof. W. Pietraszkiewicz, a prominent specialist in the field of general shell theory. Reflecting Prof. Pietraszkiewicz's focus, the respective papers address a range of current problems in the theory of shells. In addition, they present other structural mechanics problems involving dimension-reduced models. Lastly, several applications are discussed, including material models for such dimension-reduced structures. § § § §04§1. A prominent specialist in the field of general shell theory.- 2. Range of current problems in the theory of shells.- 3. Structural mechanics problems involving dimension-reduced models.- 4. Conclusion. §02§§Prof. Dr.-Ing.habil.Dr.h.c.mult Holm Altenbach, Member of the International Association of Applied Mathematics and Mechanics, and the International Research Center on Mathematics and Mechanics of Complex Systems (M〓Present position: Full Professor in Engineering Mechanics at the Otto-von-Guericke-University, Faculty of Mechanical Engineering, Institute of Mechanics (since 2011), acting director of the Institute of Mechanics since 2015