diff --git a/paper.md b/paper.md new file mode 100644 index 0000000..eacdbc3 --- /dev/null +++ b/paper.md @@ -0,0 +1,84 @@ +--- +title: 'Tamaas: a library for elastic-plastic contact of rough surfaces' +tags: + - C++ + - Python + - contact + - rough surface + - plasticity +authors: + - name: Lucas Frérot + orcid: 0000-0002-4138-1052 + affiliation: 1 + - name: Guillaume Anciaux + orcid: 0000-0002-9624-5621 + affiliation: 1 + - name: Jean-François Molinari + orcid: 0000-0002-1728-1844 + affiliation: 1 +affiliations: + - name: Civil Engineering Institute, École Polytechnique Fédérale de Lausanne, Switzerland + index: 1 +date: 13 December 2019 +bibliography: paper.bib + +--- + +# Summary + +Physical phenomena that happen at solid contact interfaces, such as +friction and wear, are largely entwined with the roughness of the +surfaces in contact. For example, the fact that the friction force +between two solids in contact is independent of their apparent contact +area is due to roughness, as the solids are only in contact over a +smaller "true contact area" which only depends on the normal force. +Roughness occurs on most man-made and natural surfaces alike +[@persson_nature_2005] and can span many orders of magnitude, from the +nanometer scale to the kilometer scale [@renard_constant_2013]. This +poses a serious challenge to conventional solid mechanics numerical +approaches such as the finite-element method. + +``Tamaas`` is a C++ library with a Python interface, developed in the +[Solid Mechanics Simulation Lab](https://www.epfl.ch/labs/lsms) at +EPFL, that implements a unique Fourier-accelerated volume integral +formulation of equilibrium [@frerot_fourieraccelerated_2019] for the +solution of elastic-plastic rough contact problems. The use of C++ +allows for a particular focus on performance: most loops are +paralelized using ``Thrust/OpenMP`` and the fast-Fourier transforms are +computed with ``FFTW3/OpenMP``. + +# Use and examples + +``Tamaas`` provides access in its Python API to random rough surface +generation procedures (e.g. @hu_simulation_1992), statistical tools +(e.g. autocorrelation and power spectrum computations) and a variety +of contact algorithms: + +- Normal and adhesive contact schemes based on the conjugate gradient + [@polonsky_numerical_1999], [@rey_normal_2017]; +- Frictional contact; +- Elastic-plastic contact [@frerot_fourieraccelerated_2019]. + +``Tamaas`` also exposes in its Python API the accelerated linear +operators it uses to compute equilibrium solutions, making prototyping +new algorithms convenient. + +The following publications have been made possible with ``Tamaas``: + +- @yastrebov_contact_2012 +- @yastrebov_contact_2014 +- @yastrebov_infinitesimal_2015 +- @yastrebov_accurate_2017 +- @yastrebov_role_2017 +- @rey_normal_2017 +- @rey_stability_2018 +- @rey_quantifying_2019 +- @frerot_mechanistic_2018 +- @frerot_fourieraccelerated_2019 +- @frerot_crack_2019 + +# Acknowledgements + +We acknowledge the financial support of the Swiss National Science Foundation (grant #162569 "Contact mechanics of rough surfaces"). + +# References