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Title: Mechanical diode: Comparing numerical and experimental characterizations

Abstract

In this introductory work, joint compliance is studied in both a numerical and experimental setting. A simple bolted interface is used as the test article and compliance is measured for the joint in both compression and in tension. This simple interface is shown to exhibit a strong non-linearity near the transition from compression to tension (or vice-versa). Modeling issues pertaining to numerically solving for the compliance are addressed. It is shown that the model predictions, in spite of convergence being very sensitive to numerical artifacts of the interface model, are in good agreement with experimentally measured strains and joint compliances. The joint behavior is a mechanical analogy to a diode, i.e., in compression, the joint is very stiff, acting almost as a rigid link, while in tension the joint is relatively soft, acting as a spring.

Authors:
; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
574174
Report Number(s):
SAND-98-0249
ON: DE98003217; TRN: 98:001232
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Feb 1998
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; COMPUTERIZED SIMULATION; COMPRESSIBILITY; TENSILE PROPERTIES; BOLTED JOINTS; NONLINEAR PROBLEMS

Citation Formats

Sagartz, M J, Segalman, D, and Simmermacher, T. Mechanical diode: Comparing numerical and experimental characterizations. United States: N. p., 1998. Web. doi:10.2172/574174.
Sagartz, M J, Segalman, D, & Simmermacher, T. Mechanical diode: Comparing numerical and experimental characterizations. United States. https://doi.org/10.2172/574174
Sagartz, M J, Segalman, D, and Simmermacher, T. 1998. "Mechanical diode: Comparing numerical and experimental characterizations". United States. https://doi.org/10.2172/574174. https://www.osti.gov/servlets/purl/574174.
@article{osti_574174,
title = {Mechanical diode: Comparing numerical and experimental characterizations},
author = {Sagartz, M J and Segalman, D and Simmermacher, T},
abstractNote = {In this introductory work, joint compliance is studied in both a numerical and experimental setting. A simple bolted interface is used as the test article and compliance is measured for the joint in both compression and in tension. This simple interface is shown to exhibit a strong non-linearity near the transition from compression to tension (or vice-versa). Modeling issues pertaining to numerically solving for the compliance are addressed. It is shown that the model predictions, in spite of convergence being very sensitive to numerical artifacts of the interface model, are in good agreement with experimentally measured strains and joint compliances. The joint behavior is a mechanical analogy to a diode, i.e., in compression, the joint is very stiff, acting almost as a rigid link, while in tension the joint is relatively soft, acting as a spring.},
doi = {10.2172/574174},
url = {https://www.osti.gov/biblio/574174}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Feb 01 00:00:00 EST 1998},
month = {Sun Feb 01 00:00:00 EST 1998}
}