Simultaneous topology and fastener layout optimization of assemblies considering joint failure

Ambrozkiewicz, Olaf; Kriegesmann, Benedikt

doi:10.15480/882.3377

Simultaneous topology and fastener layout optimization of assemblies considering joint failure

Citation Link: https://doi.org/10.15480/882.3377

Publikationstyp

Journal Article

Date Issued

2021-01-15

Sprache

English

Author(s)

Ambrozkiewicz, Olaf

Kriegesmann, Benedikt

Institut

Strukturoptimierung im Leichtbau M-EXK1

TORE-DOI

10.15480/882.3377

TORE-URI

http://hdl.handle.net/11420/7370

Journal

International Journal for Numerical Methods in Engineering

Volume

122

Issue

1

Start Page

294

End Page

319

Citation

International Journal for Numerical Methods in Engineering 122 (1): 294-319 (2021-01-15)

Publisher DOI

10.1002/nme.6538

Scopus ID

2-s2.0-85092118454

ArXiv ID

2005.03398v1

Publisher

Wiley

This paper provides a method for the simultaneous topology optimization of parts and their corresponding joint locations in an assembly. Therein, the joint locations are not discrete and predefined, but continuously movable. The underlying coupling equations allow for connecting dissimilar meshes and avoid the need for remeshing when joint locations change. The presented method models the force transfer at a joint location not only by using single spring elements but accounts for the size and type of the joints. When considering riveted or bolted joints, the local part geometry at the joint location consists of holes that are surrounded by material. For spot welds, the joint locations are filled with material and may be smaller than for bolts. The presented method incorporates these material and clearance zones into the simultaneously running topology optimization of the parts. Furthermore, failure of joints may be taken into account at the optimization stage, yielding assemblies connected in a fail-safe manner.