53 citations · 110 across the 9 of their papers we have counts for
9 papers
On the Hausdorff spectra of free pro- groups and certain -adic analytic groups
Iker de las Heras, Benjamin Klopsch, Anitha Thillaisundaram
We establish that finitely generated non-abelian direct products of free pro- groups have full Hausdorff spectrum with respect to the lower -series . This co…
Wire twisting stiffness modelling with application in wire race ball bearings. Derivation of analytical formula and Finite Element validation
Josu Aguirrebeitia, Inigo Martin, Iker Heras +2
Since Erich Franke produced the first wire race bearings in 1934, they have not been used profusely until these last years in applications such as computerized tomography, X-ray ma…
Static structural behaviour of wire bearings: comparison with conventional bearings and study of design and operational parameters
Inigo Martin, Iker Heras, Josu Aguirrebeitia +2
In wire bearings the rolling process occurs on raceways machined on steel wires, and the rings are made of light materials such as aluminium. This particular architecture provides…
Structural modeling of crossed roller wire race bearings: analytical submodel for the roller-wire-ring set
Inigo Martin, Iker Heras, Ibai Coria +2
Since wire bearings were patented in 1936, they have been used in applications where weight saving is a key aspect. Nevertheless, little work can be found in literature regarding t…
Load distribution and friction torque in four-point contact slewing bearings considering manufacturing errors and ring flexibility
Iker Heras, Josu Aguirrebeitia, Mikel Abasolo +2
This work introduces a methodology for the calculation of the load distribution in four-point contact slewing bearings considering ball preload, manufacturing errors and ring flexi…
Efficient assembly of bolted joints using numerical FEM
Ibai Coria, Inigo Martin, Abdel-Hakim Bouzid +2
Several factors can cause leakages in a bolted flange connection, external loads being the most important one. External loads such as those produced by misalignment introduce an ex…
The finitely generated Hausdorff spectra of a family of pro- groups
Iker de las Heras, Anitha Thillaisundaram
Recently the first example of a family of pro- groups, for a prime, with full normal Hausdorff spectrum was constructed. In this paper we further investigate this family by…
Powerfully solvable and powerfully simple groups
Iker de las Heras, Gunnar Traustason
We introduce the notion of a powerfully solvable group. These are powerful groups possessing an abelian series of a special kind. These groups include in particular the class of po…
Hausdorff dimension of closed subsets in profinite groups
Iker de las Heras
A countably based profinite group can be naturally seen as a metric space with respect to a given filtration, and thus, it has a well defined Hausdorff dimension function. Barnea a…