Niclas Strömberg

TL;DR: In this paper, the authors present two algorithms for solving the discrete, quasi-static, small-displacement, linear elastic contact problem with Coulomb friction, which are adoptions of a Newton method for solving B-differentiable equations and an interior point method to solve smooth, constrained equations.

TL;DR: In this paper, a generalized standard model for contact, friction and wear is derived from the principle of virtual power and the fundamental laws of thermodynamics by defining an internal state variable for the wear process.

TL;DR: In this paper, the authors consider topology optimization of hyperelastic bodies subjected simultaneously to external forces and prescribed non-zero displacements and show that even for gross rotations that are in all practical aspects small (<3 deg), topology optimisation based on a large deformation theory might generate different design concepts compared to what is obtained when small displacement linear elasticity is used.

TL;DR: In this article, the numerical treatment of fretting in the interface between a body and a rigid foundation is discussed, starting from a variational formulation of a fretting model given in a framework of continuum thermodynamics, an augmented Lagrangian formulation is derived by introducing finite element discretizations in space and a finite difference discretization in time.

TL;DR: In this article, a large rotational approach for dynamic contact problems with friction is proposed, which is obtained by superposing small displacement elasticity on rigid-body motions, and postulating tribological laws on the gear flanks.