Inflated membrane structures, useful in vibration/shock isolation devices, terrestrial and space structures, etc., rely on the internal dissipation in the membrane for vibration attenuation. In this work, using the Christensen viscoelastic material model, we study the contact mechanics, displacement-controlled relaxation response, force-controlled creep response, dynamic contact, and energy dissipation due to oscillatory contact in an inflated spherical nonlinear viscoelastic membrane. We consider an inflated spherical membrane squeezed between two large rigid, frictionless, parallel plates. The effective stiffness and damping in the membrane–plate assembly are determined, and a phenomenological model is developed. Under oscillatory contact condition, the energy dissipation per cycle is determined. Further, using the free-vibration test, the damped natural frequency of the membrane–plate system is calculated.
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December 2015
Research-Article
On the Static and Dynamic Contact Problem of an Inflated Spherical Viscoelastic Membrane
Nirmal Kumar,
Nirmal Kumar
Department of Mechanical Engineering and
Centre for Theoretical Studies,
Indian Institute of Technology Kharagpur,
Kharagpur 721302, India
e-mail: nirmal.mit@gmail.com
Centre for Theoretical Studies,
Indian Institute of Technology Kharagpur,
Kharagpur 721302, India
e-mail: nirmal.mit@gmail.com
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Anirvan DasGupta
Anirvan DasGupta
Department of Mechanical Engineering and
Centre for Theoretical Studies,
Indian Institute of Technology Kharagpur,
Kharagpur 721302, India
e-mail: anir@mech.iitkgp.ernet.in
Centre for Theoretical Studies,
Indian Institute of Technology Kharagpur,
Kharagpur 721302, India
e-mail: anir@mech.iitkgp.ernet.in
Search for other works by this author on:
Nirmal Kumar
Department of Mechanical Engineering and
Centre for Theoretical Studies,
Indian Institute of Technology Kharagpur,
Kharagpur 721302, India
e-mail: nirmal.mit@gmail.com
Centre for Theoretical Studies,
Indian Institute of Technology Kharagpur,
Kharagpur 721302, India
e-mail: nirmal.mit@gmail.com
Anirvan DasGupta
Department of Mechanical Engineering and
Centre for Theoretical Studies,
Indian Institute of Technology Kharagpur,
Kharagpur 721302, India
e-mail: anir@mech.iitkgp.ernet.in
Centre for Theoretical Studies,
Indian Institute of Technology Kharagpur,
Kharagpur 721302, India
e-mail: anir@mech.iitkgp.ernet.in
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received June 5, 2015; final manuscript received August 29, 2015; published online October 1, 2015. Assoc. Editor: Nick Aravas.
J. Appl. Mech. Dec 2015, 82(12): 121010 (8 pages)
Published Online: October 1, 2015
Article history
Received:
June 5, 2015
Revised:
August 29, 2015
Citation
Kumar, N., and DasGupta, A. (October 1, 2015). "On the Static and Dynamic Contact Problem of an Inflated Spherical Viscoelastic Membrane." ASME. J. Appl. Mech. December 2015; 82(12): 121010. https://doi.org/10.1115/1.4031484
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