Dealing with multiple contacts in a human-in-the-loop application

Abstract

Abstract. This paper deals with continuous contact force models applied to the human-in-the

On the continuous contact force models for soft materials in multibody dynamics

“…After some mathematical manipulation, the expression for this contact force model has the following form [18]:…”

“…Finally, a third part of the initial kinetic energy is dissipated. Thus, the balance of energy between the start and end of the compression phase can be written as follows: (18) in which T (max) represents the kinetic energy of the system at the end of the compression phase, U (max) is the maximum elastic strain energy stored and E c denotes the dissipated energy associated with internal damping of the material. This last term will be discussed in detail in the next section.…”

“…When the dissipated energy during the contact of two spheres is taken into account, the balance of energy given by (18) The linear momentum balance between instants t (−) and t (max) is given by…”

“…The contact problem has been an intensive topic of research over the last decades and deserved the attention of many authors, which led to the development of relevant work and even to the publication of a good number of textbooks totally devoted to this issue, such as those by Goldsmith [4], Brach [5], Pfeiffer and Glocker [6], Johnson [7], Stronge [8], Wriggers [9], among others. The contactimpact study in multibody dynamics has received a great deal of attention in the past few years and it still remains an active field of research and development [10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Load assessment and analysis of impacts in multibody systems

“…Francisco González et al or continuous force based methods [15], [4]. The main assumption for impulsemomentum level approaches is that the duration of impact is negligible on the time scale determined by the finite motion of the system.…”