Walter Sextro – författare

The aim of this book is to describe an efficient procedure to model dynamical contact problems with friction. This procedure is applied to different practical problems and verified by experiments.

Friction contacts are used to transmit forces or to dissipate energy. Examples for dynamical engineering systems with friction are brakes, machine tools, motors, turbines, bearings or wheel-rail systems. A better understanding of friction phenomena result in improvements like the reduction of noise and maintenance costs, increased life time of machines and improved energy efficiency. Dependent on the features of the dynamic system with friction contacts, different contact models and solution methods like multi-scaling methods are developed and applied.

Intelligent technical systems, which combine mechanical, electrical and software engineering with methods from control engineering and advanced mathematics, go far beyond the state of the art in mechatronics and open up fascinating perspectives. Among these systems are so-called self-optimizing systems, which are able to adapt their behavior autonomously and flexibly to changing operating conditions. The Collaborative Research Center 614 "Self-optimizing concepts and structures in mechanical engineering" pursued the long-term aim to enable others to develop dependable self-optimizing systems. Assuring their dependability poses new challenges. However, self-optimization also offers the possibility to adapt the system''s behavior to improve dependability during operation.

The aim of this book is to provide methods and techniques to master the challenges and to exploit the possibilities given by self-optimization. The reader will be able to develop self-optimizing systems that fulfill and surpass today’s dependability requirements easily.

This book is directed to researchers and practitioners alike. It gives a brief introduction to the holistic development approach for self-optimizing mechatronic systems and the steps required to assure a dependable product design starting with the very early conceptual design phase. A guideline to select suitable methods for each step and the methods themselves are included. Each method is individually introduced, many examples and full references are given.

Dieses Lehrbuch zeigt, wie man Schwingungen in Technik und Natur verstehen, deuten und in gewünschter Weise beeinflussen kann. Sowohl die physikalischen Grundlagen als auch die mathematische Behandlung aller relevanten Schwingungsformen werden anschaulich erklärt. In der aktuellen Auflage wurden Bilder qualitativ verbessert, der Text überarbeitet, das Literaturverzeichnis aktualisiert sowie konstruktive Hinweise der Leserschaft berücksichtigt.

Dieses Lehrbuch gibt eine einzigartige Übersicht zu Entstehung und Berechnung von Schwingungen in Technik und Natur. Sowohl die physikalischen Grundlagen als auch die mathematische Behandlung aller relevanten Schwingungsformen werden anschaulich erklärt. In der aktuellen Auflage wurde der Grundlagencharakter gestärkt und dafür nicht relevante Kapitel und Abschnitte gekürzt.