Topology optimization design of frequency- and temperature-dependent viscoelastic shell structures under non-stationary random excitation

• Published in: Structural and multidisciplinary optimization Vol. 67; no. 6; p. 100
• Main Authors: Wu, Fan, Zhang, Xin, Xue, Pu, Zahran, M. S.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.06.2024; Springer Nature B.V
• Subjects: Ambient temperature; Computational Mathematics and Numerical Analysis; Design optimization; Engineering; Engineering Design; Frequencies; Optimization; Power spectral density; Random excitation; Random processes; Random vibration; Sensitivity analysis; Shells (structural forms); Specific gravity; Temperature dependence; Theoretical and Applied Mechanics; Topology optimization; Viscoelasticity; Topology optimization; Viscoelastic shell structures; Non-stationary random excitation; Pseudo excitation method; Frequency- and temperature-dependent

This paper investigates the topology optimization design of viscoelastic planar shell structures to minimize the random vibration intensity under non-stationary random excitation. The excitation is is modeled as uniformly modulated evolutionary random process. The viscoelastic material is characteri...