Numerical Investigation on Vibro-acoustic Responses of a Satellite| Chapter 1 | New Trends in Physical Science Research Vol.7

 

 Currently, either the highly computational finite element (FE) approach or the imprecise statistical energy analysis (SEA) method is used to create a satellite's vibro-acoustic model. Three important technologies—division frequency, damping loss factor (DLF) model, and on-board equipment modeling—are suggested in this work for a combined vibro-acoustic simulation of a satellite. When f>f1, the division frequency (f1) is determined by whether the modes of the components are greater than 5. When all of the components are favoured by SEA when f>f1, hybrid FE/SEA technique is advised with just solar arrays by SEA method and the other components by FE method. Based on the examination of numerous experimental data, the DLF component model was proposed, in which the DLF is opposed to the area-to-mass ratio of components and frequency. It is established that the corresponding DLF of the panel may imitate the on-board equipment using the SEA theory. In comparison to the FE technique throughout the full band, the combined method not only cuts computation time by over 80% but also keeps prediction error to a maximum of 1 dB.

Author(s) Details:

Jie Zhang,
Institute of Telecommunication and Navigation Satellites, China Academy of Spacecraft Technology, Beijing, 100094, China.

Please see the link here: https://stm.bookpi.org/NTPSR-V7/article/view/7777

Masonry Wall Numerical Simulation Using the Concrete Damage Plasticity Model | Chapter 10 | New Approaches in Engineering Research Vol. 2

 The purpose of this study is to look into how the FE (Finite Element) tool may be used to analyse brick walls. Masonry is composed of highly nonlinear materials with varying properties depending on their application. Experimenting on a full-scale masonry wall model is difficult. Its importance in the development of low-rise structures is also overlooked. As if the beam and column were correctly contained and bonded to the wall. It boosts the seismic performance of low-rise structures. The term "energy" refers to the amount of Cracking dissipates the heat, just as it does in low-rise buildings. The rigidity of a building is increased and it can withstand extra weight when a masonry wall is cast monolithically (like restricted masonry) with the column. In this study, the FE tool is used to perform a numerical nonlinear analysis of a wall panel (ABAQUS). The results are compared to prior investigations by other researchers using a Damage Plasticity Model for Concrete (CDP), with the conclusion that the results are good.

 
Author (s) Details

Mr. Suraj D. Bhosale
Civil Engineering Department, Sardar Vallbhbhai National Institute of Technology, Surat, Gujarat, India.

Atul K. Desai
Civil Engineering Department, Sardar Vallbhbhai National Institute of Technology, Surat, Gujarat, India.

View Book :- https://stm.bookpi.org/NAER-V2/article/view/2124