Following the theoretical and computational developments of the pointwise membrane identification method reported in the first part of this paper, we perform a finite inflation test on a rubber balloon to validate the method. The balloon is inflated using a series of pressurized configurations, and a surface mesh that corresponds through all the deformed states is derived using a camera-based three dimensional reconstruction technique. In each configuration, the wall tension is computed by the finite element inverse elastostatic method, and the in-plane stretch relative to a slightly pressurized configuration is computed with the aid of finite element interpolation. Based on the stress-strain characteristics, the Ogden model is employed to describe the material behavior. The elastic parameters at every Gauss point in a selected region are identified simultaneously. To verify the predictive capability of the identified material model, the deformation under a prescribed pressure is predicted using the finite element method and is compared with the physical measurement. The experiment shows that the method can effectively delineate the distributive elastic properties in the balloon wall.
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e-mail: jia-lu@uiowa.edu
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November 2009
Research Papers
Pointwise Identification of Elastic Properties in Nonlinear Hyperelastic Membranes—Part II: Experimental Validation
Xuefeng Zhao,
Xuefeng Zhao
Department of Mechanical and Industrial Engineering, Center for Computer Aided Design,
The University of Iowa
, Iowa City, IA 52242-1527
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Xiaolin Chen,
Xiaolin Chen
Mechanical Engineering Program, School of Engineering and Computer Science,
Washington State University
, Vancouver, WA 98686
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Jia Lu
Jia Lu
Department of Mechanical and Industrial Engineering, Center for Computer Aided Design,
e-mail: jia-lu@uiowa.edu
The University of Iowa
, Iowa City, IA 52242-1527
Search for other works by this author on:
Xuefeng Zhao
Department of Mechanical and Industrial Engineering, Center for Computer Aided Design,
The University of Iowa
, Iowa City, IA 52242-1527
Xiaolin Chen
Mechanical Engineering Program, School of Engineering and Computer Science,
Washington State University
, Vancouver, WA 98686
Jia Lu
Department of Mechanical and Industrial Engineering, Center for Computer Aided Design,
The University of Iowa
, Iowa City, IA 52242-1527e-mail: jia-lu@uiowa.edu
J. Appl. Mech. Nov 2009, 76(6): 061014 (8 pages)
Published Online: July 27, 2009
Article history
Received:
February 5, 2008
Revised:
February 4, 2009
Published:
July 27, 2009
Connected Content
A companion article has been published:
Pointwise Identification of Elastic Properties in Nonlinear Hyperelastic Membranes—Part I: Theoretical and Computational Developments
Citation
Zhao, X., Chen, X., and Lu, J. (July 27, 2009). "Pointwise Identification of Elastic Properties in Nonlinear Hyperelastic Membranes—Part II: Experimental Validation." ASME. J. Appl. Mech. November 2009; 76(6): 061014. https://doi.org/10.1115/1.3130810
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