Mechanical shock is a common problem that is present in many situations, such as ground motion, blast, explosions, crash, and impact. The development of passive, active, or adaptive control and isolation strategies for shock-induced vibration has experienced recent interest, typically due to the increasing demand in improved isolation requirements for sensitive equipment subjected to harsh environments. This paper presents a review of some of the significant recent works developed in the field, focusing on novel developments that contribute to the shock isolation. The article explores several isolation approaches considering passive, active, and nonlinear systems discussing both theoretical and experimental results. In addition, important outcomes of the work are reviewed. The paper concludes with suggestions for potential developments, applications, and recommendations for future research.

Two-degree of freedom system, or two-stage mount are used to improve the high frequency vibration isolation performance with the disadvantage of increasing the mass of the system and adding a second resonance. The vibration isolation property is a well-understood topic for harmonic vibration considering linear and nonlinear elements, but not its shock response. The absolute and relative response of a two-stage mount under shock excitation is investigated in this paper. Analysing the effect of the mass ratio between the two-stage, and its respective viscous damping. The potential advantages and issues behind this system are discussed and compared with the single mount. Experimental validation was performed using two commercial isolator and different masses. Findings suggested that a large secondary mass could reduce the shock response in terms of absolute motion. This effect is only significant for the case of short pulses and when the added mass is at least five times greater than the main mass. Being useful to have light damping only on the secondary stage.

To mitigate the high contact forces and noise inherent in traditional hard-impact dampers, this work evaluates the efficacy of a soft viscoelastic vibro-impact interface for passive vibration suppression. This study investigates the nonlinear dynamic behavior of a cantilever beam equipped with a soft vibro-impact interface, combining theoretical modeling and experimental validation to explore energy redistribution and damping enhancement mechanisms. The system is excited under both free and forced vibration conditions, and its response is characterized through tip displacement, acceleration, and impact force measurements. Numerical simulations based on an impact-contact model accurately predict the amplitude-dependent broadening and frequency shift observed in the experiments, demonstrating that the soft impacts introduce nonlinear stiffness and effective damping. The comparison between theoretical and experimental frequency responses confirms that energy is transferred from the primary mode to higher harmonics, leading to broadband vibration attenuation. These findings provide experimental evidence of the nonlinear energy transfer mechanisms previously predicted, including harmonic resonance stimulation and non-resonant energy exchange. The results demonstrate that soft-contact vibro-impact dampers can be effectively tuned to exploit nonlinear dynamics for enhanced passive vibration suppression, bridging the gap between theoretical predictions and practical implementations.

Hoy en día, la economía global se transforma rápidamente, consecuentemente México requiere de una economía basada no solamente en el conocimiento, sino también fundamentada en el aprendizaje por competencias y de innovación académica, lo cual conlleva la necesidad de generar profesionistas cuyo potencial se sustente principalmente en la capacidad para crear, desarrollar, adoptar y/o adaptar innovaciones tecnológicas para el desarrollo de nuevos productos. Por esta razón, se impone el reto de llevar a cabo una propuesta de rediseño del Programa Educativo (PE) de la licenciatura en Ingeniería de Materiales (IMT), reconociendo las competencias adquiridas, junto con los conocimientos, que trascienden para la responsabilidad social y aporta a la transformación de la sociedad (UANL, Modelo Académico, 2022).