scholarly journals A Multi-scale Finite Element Approach for the Random Mechanical Response of Honeycomb-cored Structures

2012 ◽  
Author(s):  
Erick Saavedra Flores ◽  
Francisco Díaz De la O ◽  
Michael Friswell ◽  
Jans Sienz
Keyword(s):  
Finite Element ◽  
Mechanical Response ◽  
Finite Element Approach ◽  
Multi Scale ◽  
Element Approach

scholarly journals Numerical modeling of residual stresses during vibratory peening of a 3-stage Blisk – a multi-scale discrete element and finite element approach

2022 ◽  
Vol 299 ◽  
pp. 117383
Author(s):  
Joselito Yam Alcaraz ◽  
Jing Zhang ◽  
Arun Prasanth Nagalingam ◽  
Sharan Kumar Gopasetty ◽  
Boon Loong Toh ◽  
...  
Keyword(s):  
Finite Element ◽  
Numerical Modeling ◽  
Residual Stresses ◽  
Discrete Element ◽  
Finite Element Approach ◽  
Multi Scale ◽  
Element Approach

scholarly journals Microstructural Modeling of Rheological Mechanical Response for Asphalt Mixture Using an Image-Based Finite Element Approach

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2041 ◽  
Author(s):  
Wenke Huang ◽  
Hao Wang ◽  
Yingmei Yin ◽  
Xiaoning Zhang ◽  
Jie Yuan
Keyword(s):  
Finite Element ◽  
Mechanical Response ◽  
Micromechanical Model ◽  
Asphalt Mixture ◽  
Simulation Software ◽  
Fe Model ◽  
Finite Element Approach ◽  
X Ray ◽  
Element Approach ◽  
Asphalt Mortar

In this paper, an image-based micromechanical model for an asphalt mixture’s rheological mechanical response is introduced. Detailed information on finite element (FE) modeling based on X-ray computed tomography (X-ray CT) is presented. An improved morphological multiscale algorithm was developed to segment the adhesive coarse aggregate images. A classification method to recognize the different classifications of the elemental area for a confining pressure purpose is proposed in this study. Then, the numerical viscoelastic constitutive formulation of asphalt mortar in an FE code was implemented using the simulation software ABAQUS user material subroutine (UMAT). To avoid complex experiments in determining the time-dependent Poisson’s ratio directly, numerous attempts were made to indirectly obtain all material properties in the viscoelastic constitutive model. Finally, the image-based FE model incorporated with the viscoelastic asphalt mortar phase and elastic aggregates was used for triaxial compressive test simulations, and a triaxial creep experiment under different working conditions was conducted to identify and validate the proposed finite element approach. The numerical simulation and experimental results indicate that the three-dimensional microstructural numerical model established can effectively analyze the material’s rheological mechanical response under the effect of triaxial load within the linear viscoelastic range.

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