Stress and Strain

doi:10.1117/3.2317988.ch1

Stress and Strain

Book: Opto-structural Analysis

Author(s): John W. Pepi

Published: 2018

https://doi.org/10.1117/3.2317988.ch1

Author Affiliations +

Abstract

The opto-structural analyst is concerned with stress and deflection from externally applied loads, such as those occurring during mounting of optics, and internal loads, such as those initiated by gravity or acceleration. Additionally, the analyst is concerned with temperature change, which causes deflection and often causes stress. For cryogenic and high-temperature extremes, such values are obviously crucial; for more benign environments, temperature, loads, and self-weight deflection are still an issue, since we are concerned with fractionalwavelength- of-light changes. Accordingly, this initial chapter provides the basics of structural analysis, which lay the foundation for the chapters to follow.