Resilience in Mechanical Engineering - A Concept for Controlling Uncertainty during Design, Production and Usage Phase of Load-Carrying Structures

Lena C Altherr,Pia D Schlemmer,Ingo Dietrich,Tristan Gally,Felix Geßner,Peter F Pelz,Hermann Kloberdanz,Philipp Leise,Nicolas Brötz,Andreas Schmitt

doi:10.4028/www.scientific.net/amm.885.187

Lena C Altherr, Pia D Schlemmer + Show 8 more

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https://doi.org/10.4028/www.scientific.net/amm.885.187

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Abstract

Resilience as a concept has found its way into different disciplines to describe the ability of an individual or system to withstand and adapt to changes in its environment. In this paper, we provide an overview of the concept in different communities and extend it to the area of mechanical engineering. Furthermore, we present metrics to measure resilience in technical systems and illustrate them by applying them to load-carrying structures. By giving application examples from the Collaborative Research Centre (CRC) 805, we show how the concept of resilience can be used to control uncertainty during different stages of product life.

Highlights

Load-carrying structures in mechanical engineering have traditionally been developed for a given design point
By giving application examples from the Collaborative Research Centre (CRC) 805, we show how the concept of resilience can be used to control uncertainty during different stages of product life
While designing structures which fulfill their purpose in a whole neighborhood of the design point, the so-called uncertainty set [2], already mitigates some of the uncertainty, the logical step is to design resilient structures that can even cope with failures of components or other effects disregarded during design phase

Summary

Introduction

Load-carrying structures in mechanical engineering have traditionally been developed for a given design point (e.g. a given load the structure should be able to sustain). Resilience is a concept that cannot only be applied to control uncertainty during design, and during operation by integrating the four resilience functions monitoring, responding, learning and anticipating [3]. In this context, resilience can be regarded as a paradigm shift: Instead of designing systems and processes that are robust regarding specific single assumptions made during the design phase (asking “What if...?”) the goal is to build systems and design processes that perform “No matter what!”.

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Conclusion