Dynamic Response Analysis of a SRM Incorporating Frequency-Dependent Modulus Using Iterative Approach

Adnan Muhammad; Bing Sun; Jian Wei Zhang; Dimitar Kamarinchev

doi:10.4028/www.scientific.net/AMM.232.706

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 232Dynamic Response Analysis of a SRM Incorporating...

Dynamic Response Analysis of a SRM Incorporating Frequency-Dependent Modulus Using Iterative Approach

Abstract:

Mode-based, dynamic analysis of a Solid Rocket Motor (SRM), during transportation, is performed, while considering frequency-dependent modulus of viscoelastic materials. The modulus of viscoelastic materials depends on vibration frequency, which however cannot be modified during the mode-based response analysis. An iterative approach is proposed, to extract mode-based stress response of a SRM. The material modulus used to get response, is based on frequency that is the same as the motor’s eigenfrequency. In order to do modal summation of mode responses, two methods are used in the analysis. Results show that in both the Eigenfrequency extraction and in the subsequent stress response analysis, the used material evaluation frequency is in complete agreement with the eigenfrequency.

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Periodical:

Applied Mechanics and Materials (Volume 232)

Pages:

706-710

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.232.706

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Online since:

November 2012

Authors:

Adnan Muhammad, Bing Sun, Jian Wei Zhang, Dimitar Kamarinchev

Keywords:

Frequency-Dependent Modulus, Response Spectrum Analysis, Solid Rocket Motor (SRM), Transportation Vibrations, Viscoelastic Material

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