... mechanical systems subjected to unilateral contact and friction. The dynamics of the system is initially formulated as a mixed linear complementarity problem (MLCP), from which the effective mass and force terms of the interface model are derived. These terms account for contact detachment and stick–slip...

...Tianheng Feng; Soovadeep Bakshi; Qifan Gu; Dongmei Chen Motivated by modeling directional drilling dynamics where planar curved beams undergo small displacements, withstand high compression forces, and are in contact with an external wall, this paper presents an finite element method (FEM) modeling...

...; final manuscript received June 28, 2018; published online July 30, 2018. Assoc. Editor: Paramsothy Jayakumar. 09 01 2018 28 06 2018 Algorithms Algorithms Bio-Mechanical dynamics Computational dynamics Computational kinematics Computational mechanics Control Contact modeling...

... characteristics that are critical to design applications and systems simulations. Dynamics MEMS Nano Experimental dynamics Parameter estimation System identification Impact Contact Friction modeling NEMS 12 06 2017 25 10 2017 Contributed by the Design Engineering Division...

... that lead to deteriorating behavior in Eq. (9) (negative values) are initially removed. 84 and 12 combinations satisfy the criterion for all the objective functions using 7.5% and 12.5% NES mass ratios, respectively. Impact Nonlinear dynamical systems Design optimization Contact Friction...

...Akira Saito This paper deals with the forced response analysis of chains of thin elastic beams that are subject to periodic external loading and frictionless intermittent contact between the beams. Our study shows that the beams show nonlinear resonances whose frequencies are the same as the linear...

... characteristics for stiction, is employed to estimate the stick–slip friction in revolute clearance joint. A hybrid contact force model, combining Lankarani–Nikravesh model, and improved elastic foundation model, is used to establish contact model. The generalized-α method, which can dissipate the spurious high...

... contact interface. An analytic contact model is proposed to calculate the local microslip based on the different deformations that the two flanges in contact take during vibration. The model is first introduced using a simple geometry representing two flanges in contact, and then, it is applied...

... was introduced to solve the rigid multibody dynamics problem in the presence of friction and contact. The discretized equations of motion obtained here are identical to the ones in Tasora and Anitescu 2011 [“A Matrix-Free Cone Complementarity Approach for Solving Large-Scale, Nonsmooth, Rigid Body Dynamics...

... 11 2016 10 07 2017 Chaotic dynamics Computational kinematics Non-smooth dynamics Nonlinear oscillations Impact Contact Friction modeling Dynamics Vibration During downhole drilling operations for extraction of oil and gas, different types of undesired vibrations occur...

...; final manuscript received June 6, 2017; published online September 7, 2017. Assoc. Editor: Stefano Lenci. 02 11 2016 06 06 2017 Impact Non-smooth dynamics Nonlinear phenomena Contact Friction modeling Collisions or impacts in mechanical systems are very common...

... Impact Non-smooth dynamics Nonlinear dynamical systems Nonlinear phenomena Impact Contact Friction modeling Stability of nonlinear systems Contact modeling Bells are one of the oldest musical instruments which still play an important role in culture and religion. They were invented...

... was used to perform a forward dynamic simulation of the impact phase of a drop landing. The analysis was performed for varying moduli: nominal stiffness based on the literature, stiffness increased by 10%, and decreased by 10%. As the cartilage stiffness increased, the medial compartment contact load...

... online September 7, 2017. Assoc. Editor: Stefano Lenci. 30 11 2016 11 02 2017 Computational kinematics Computational mechanics Experimental dynamics Nonlinear dynamical systems Impact Contact Friction modeling Dynamics Spent nuclear fuel is settled in a spent fuel...

... to obtain the dynamic behavior of the system when it has no contact with the ground or any object in its environment (flying phase); and a set of algebraic equations is exploited when this tree-type robotic system collides with the ground (impact phase). The Gibbs–Appell (G–A) formulation in recursive form...

... using both nano-indentation and micro-indentation machines, providing sub-nm displacement resolution and μ N force resolution. Good agreement is seen for load levels spanned by both machines. As the transition from elastic to plastic behavior occurs at contact displacements on the order of 30 nm...

... a spherical joint, are modeled as two individual colliding components. The normal contact-impact forces that develop at the spherical clearance joint are determined by using a continuous force model. A continuous analysis approach is used here with a Hertzian-based contact force model, which includes...

...Zilong Wei; Chen Shen; Zili Li; Rolf Dollevoet Irregularities in the geometry and flexibility of railway crossings cause large impact forces, leading to rapid degradation of crossings. Precise stress and strain analysis is essential for understanding the behavior of dynamic frictional contact...

...Madeleine Pascal We investigate the dynamics of a two degrees-of-freedom oscillator excited by dry friction. The system consists of two masses connected by linear springs and in contact with a belt moving at a constant velocity. The contact forces between the masses and the belt are given...

...Yan-Bin Jia; Feifei Wang A formal impulse-based analysis is presented for the collision of two rigid bodies at single contact point under Coulomb's friction in three dimensions (3D). The tangential impulse at the contact is known to be linear in the sliding velocity whose trajectory, parametrized...