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Volume 5, Number 4, October 2020 , pages 349-362 DOI: https://doi.org/10.12989/acd.2020.5.4.349 |
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A review of numerical approach for dynamic response of strain gradient metal foam shells under constant velocity moving loads |
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Raad M. Fenjan, Ridha A. Ahmed, Luay Badr Hamad and Nadhim M. Faleh
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| Abstract | ||
| Dynamic characteristics of a scale-dependent porous metal foam cylindrical shell under a traveling load have been explored within this article based on a numerical approach. Within the material texture of the metal foams, uniform and non-uniform porosities may be dispersed. Based upon differential quadrature method (DQM) and Laplace transforms, the equations of motion for a shear deformable scale-dependent shell may be solved numerically. Scale-dependent shell modeling has been provided based upon strain gradient elasticity. Solving the equations will give the shell deflection as a function of load speed. Also, it is reported that shell deflection relies on the porosity dispersion and strain gradient influences. | ||
| Key Words | ||
| Dynamic characteristics of a scale-dependent porous metal foam cylindrical shell under a traveling load have been explored within this article based on a numerical approach. Within the material texture of the metal foams, uniform and non-uniform porosities may be dispersed. Based upon differential quadrature method (DQM) and Laplace transforms, the equations of motion for a shear deformable scale-dependent shell may be solved numerically. Scale-dependent shell modeling has been provided based upon strain gradient elasticity. Solving the equations will give the shell deflection as a function of load speed. Also, it is reported that shell deflection relies on the porosity dispersion and strain gradient influences. | ||
| Address | ||
| Raad M. Fenjan, Ridha A. Ahmed, Luay Badr Hamad and Nadhim M. Faleh:Al-Mustansiriah University, Engineering Collage P.O. Box 46049, Bab-Muadum, Baghdad 10001, Iraq | ||
