%0 Journal Article
%T Modeling the damped dynamic behavior of a flexible pendulum
%A Eva Casoni
%A Geraldine Far¨ªas
%A Guillaume Houzeaux
%A Marcela Cruchaga
%A Mariano V¨¢zquez
%A Mat¨ªas Rivero
%A Roberto Ortega
%J The Journal of Strain Analysis for Engineering Design
%@ 2041-3130
%D 2019
%R 10.1177/0309324719832735
%X The focus of this work is on the computational modeling of a pendulum made of a hyperelastic material and the corresponding experimental validation with the aim of contributing to the study of a material commonly used in seismic absorber devices. From the proposed dynamics experiment, the motion of the pendulum is recorded using a high-speed camera. The evolution of the pendulum¡¯s positions is recovered using a capturing motion technique by tracking markers. The simulation of the problem is developed in the framework of a parallel multi-physics code. Particular emphasis is placed on the analysis of the Newmark integration scheme and the use of Rayleigh damping model. In particular, the time step size effect is analyzed. A strong time step size dependency is obtained for dissipative time integration schemes, while the Rayleigh damping formulation without time integration dissipation shows time step¨Cindependent results when convergence is achieved
%K Experimental validation
%K polyurethane rubber
%K nonlinear dynamics
%K Newmark method
%K Rayleigh damping
%U https://journals.sagepub.com/doi/full/10.1177/0309324719832735