Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 Apr 22;20(6):2825–3069. doi: 10.1007/s10518-022-01357-4

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Fig. 14 — The concept of the acceleration response spectrum: structures (lowest row) are represented as equivalent single-degree-of-freedom oscillators characterised by their natural period of vibration and equivalent viscous damping (middle row), which are then excited by the chosen accelerogram and the response of the mass calculated. The maximum response is plotted against the period of the oscillator and the complete response spectrum of the accelerogram is constructed by repeating for a large number of closely-spaced periods; building photographs from Spence et al. (2003)