Analysis of Modeling Parameters on Threaded Screws.

Technical Report · Mon Jun 01 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1192267· OSTI ID:1192267

Vigil, Miquela S. ^[1]; Brake, Matthew Robert ^[1]; Vangoethem, Douglas ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Assembled mechanical systems often contain a large number of bolted connections. These bolted connections (joints) are integral aspects of the load path for structural dynamics, and, consequently, are paramount for calculating a structure's stiffness and energy dissipation prop- erties. However, analysts have not found the optimal method to model appropriately these bolted joints. The complexity of the screw geometry cause issues when generating a mesh of the model. This paper will explore different approaches to model a screw-substrate connec- tion. Model parameters such as mesh continuity, node alignment, wedge angles, and thread to body element size ratios are examined. The results of this study will give analysts a better understanding of the influences of these parameters and will aide in finding the optimal method to model bolted connections.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1192267
• Report Number(s): SAND-2015-5135; 594650
• Country of Publication: United States
• Language: English