Evaluating the Impact of Sample Irregularities on the Dynamic Stiffness of Polyurethane: Insights from Experimental and FEM Analysis DOI Open Access
Krzysztof Nering, Arkadiusz Kwiecień, Konrad Nering

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(23), P. 5910 - 5910

Published: Dec. 3, 2024

This study investigates the dynamic stiffness and damping characteristics of three polyurethane materials-PM, PS, PST-using a comprehensive vibroacoustic testing approach. The aim is to examine material parameters such as stiffness, Young's modulus, critical factor, influence sample irregularities on accuracy measurements. employs both experimental testing, in which cuboidal cylindrical samples were subjected sinusoidal excitation, finite element modeling (FEM) simulate test conditions without irregularities. Results indicate that contact surface (even low ~0.04 mm) significantly impact measured with effect intensifying for materials higher modulus values (above 5 MPa). Furthermore, demonstrated more stable repeatable measurements compared samples, where tested controlled environment. findings underscore need consider geometry assessments ensure better evaluations. work contributes valuable insights accurate used vibration isolation sound insulation contexts.

Language: Английский

Analytical study and multi-objective optimization of low-frequency flexural vibration band gaps of periodic orthogonal stiffened meta-plates DOI

Xunyu Li,

Yong Hu, Yinggang Li

et al.

Marine Structures, Journal Year: 2025, Volume and Issue: 103, P. 103837 - 103837

Published: May 3, 2025

Language: Английский

Citations

0
Evaluating the Impact of Sample Irregularities on the Dynamic Stiffness of Polyurethane: Insights from Experimental and FEM Analysis DOI Open Access
Krzysztof Nering, Arkadiusz Kwiecień, Konrad Nering

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(23), P. 5910 - 5910

Published: Dec. 3, 2024

This study investigates the dynamic stiffness and damping characteristics of three polyurethane materials-PM, PS, PST-using a comprehensive vibroacoustic testing approach. The aim is to examine material parameters such as stiffness, Young's modulus, critical factor, influence sample irregularities on accuracy measurements. employs both experimental testing, in which cuboidal cylindrical samples were subjected sinusoidal excitation, finite element modeling (FEM) simulate test conditions without irregularities. Results indicate that contact surface (even low ~0.04 mm) significantly impact measured with effect intensifying for materials higher modulus values (above 5 MPa). Furthermore, demonstrated more stable repeatable measurements compared samples, where tested controlled environment. findings underscore need consider geometry assessments ensure better evaluations. work contributes valuable insights accurate used vibration isolation sound insulation contexts.

Language: Английский

Citations

2