Journal
SYMMETRY-BASEL
Volume 14, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/sym14071356
Keywords
negative Poisson's ratio; Lagrange equation; model; vibration isolation
Categories
Funding
- National Natural Science Foundation of China (NNSFC) [12172186, 11772166, 11832002, 11672188]
- Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality (PHRIHLB) [11772166]
Ask authors/readers for more resources
This paper investigates the application of Negative Poisson's ratio materials in the design of vibration isolation bases. The influence of the size of the negative Poisson's ratio re-entrant structure within a single structure is analyzed, and a honeycomb base with a negative Poisson's ratio re-entrant structure is designed. A new modeling method for the honeycomb base is proposed. The vibration isolation performance of the honeycomb base is evaluated, and numerical modeling is used to verify the results.
Negative Poisson's ratio materials are increasingly used in the design of vibration isolation bases due to their unique tensile properties. In this paper, based on the expansion feature of the negative Poisson's ratio re-entrant structure, the influence of the size of the re-entrant structure within a single structure was analyzed, and a honeycomb base was designed with a negative Poisson's ratio re-entrant structure. A new modeling method for the honeycomb base is proposed. In the modeling process, the honeycomb base was analyzed according to its symmetry using the Lagrange equation for base modeling and the finite element consistent mass matrix was introduced to simplify the calculation. The vibration isolation performance of the honeycomb base was evaluated by vibration level difference. COMSOL software was used to simulate and analyze the cellular base in order to verify the correctness of the results obtained from numerical modeling. In conclusion, the honeycomb base had a vibration isolation effect on external excitation in the vertical direction of the base. Furthermore, the vibration isolation performance of the base was greatly related to the wall thickness and Poisson's ratio of the re-entrant structure.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available