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Neural dynamics-based Poisson propagation for deformable modelling

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Abstract

This paper presents a new methodology from the standpoint of energy propagation for real-time and nonlinear modelling of deformable objects. It formulates the deformation process of a soft object as a process of energy propagation, in which the mechanical load applied to the object to cause deformation is viewed as the equivalent potential energy based on the law of conservation of energy and is further propagated among masses of the object based on the nonlinear Poisson propagation. Poisson propagation of mechanical load in conjunction with non-rigid mechanics of motion is developed to govern the dynamics of soft object deformation. Further, these two governing processes are modelled with cellular neural networks to achieve real-time computational performance. A prototype simulation system with a haptic device is implemented for real-time simulation of deformable objects with haptic feedback. Simulations, experiments as well as comparisons demonstrate that the proposed methodology exhibits nonlinear force–displacement relationship, capable of modelling large-range deformation. It can also accommodate homogeneous, anisotropic and heterogeneous materials by simply changing the constitutive coefficient value of mass points.

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Authors and Affiliations

  1. School of Engineering, RMIT University, PO Box 71, Bundoora, VIC, 3083, Australia

    Jinao Zhang, Yongmin Zhong & Chengfan Gu

  2. Department of Surgery, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC, 3168, Australia

    Julian Smith

Authors
  1. Jinao Zhang
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  2. Yongmin Zhong
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  3. Julian Smith
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  4. Chengfan Gu
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Correspondence to Jinao Zhang.

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Zhang, J., Zhong, Y., Smith, J. et al. Neural dynamics-based Poisson propagation for deformable modelling. Neural Comput & Applic 31 (Suppl 2), 1091–1101 (2019). https://doi.org/10.1007/s00521-017-3132-3

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  • DOI: https://doi.org/10.1007/s00521-017-3132-3

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