scholarly journals Multiscale modeling of cancellous bone considering full coupling of mechanical, electric and magnetic effects

2021 ◽  
Author(s):  
Mischa Blaszczyk ◽  
Klaus Hackl
Keyword(s):  
Cancellous Bone ◽  
Material Model ◽  
Multiscale Approach ◽  
Two Phase ◽  
Femur Bone ◽  
Magnetic Effects ◽  
Multiscale Finite Element ◽  
Full Coupling ◽  
Fully Coupled ◽  
The Magnetic Field

AbstractModeling of cancellous bone has important applications in the detection and treatment of fatigue fractures and diseases like osteoporosis. In this paper, we present a fully coupled multiscale approach considering mechanical, electric and magnetic effects by using the multiscale finite element method and a two-phase material model on the microscale. We show numerical results for both scales, including calculations for a femur bone, comparing a healthy bone to ones affected by different stages of osteoporosis. Here, the magnetic field strength resulting from a small mechanical impact decreases drastically for later stages of the disease, confirming experimental research.

scholarly journals A fully coupled two‐phase bone material model

PAMM ◽  
2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Mischa Blaszczyk ◽  
Klaus Hackl
Keyword(s):  
Material Model ◽  
Two Phase ◽  
Bone Material ◽  
Fully Coupled

scholarly journals Constitutive Modelling and Identification of Parameters of 316L Stainless Steel at Cryogenic Temperatures

2014 ◽  
Vol 8 (3) ◽  
pp. 136-140 ◽  
Author(s):  
Maciej Ryś
Keyword(s):  
Phase Transformation ◽  
Nonlinear Response ◽  
316L Stainless Steel ◽  
Parent Phase ◽  
Secondary Phase ◽  
Material Model ◽  
Transformation Process ◽  
Constitutive Modelling ◽  
Model Parameters ◽  
Two Phase

Abstract In this work, a macroscopic material model for simulation two distinct dissipative phenomena taking place in FCC metals and alloys at low temperatures: plasticity and phase transformation, is presented. Plastic yielding is the main phenomenon occurring when the yield stress is reached, resulting in nonlinear response of the material during loading. The phase transformation process leads to creation of two-phase continuum, where the parent phase coexists with the inclusions of secondary phase. An identification of the model parameters, based on uniaxial tension test at very low temperature, is also proposed.

scholarly journals Effect of cancellous bone on the stress distribution in the proximal human femur(Bone Mechanics)

2004 ◽  
Vol 2004.1 (0) ◽  
pp. 39-40
Author(s):  
Hiroki Nakatsuchi ◽  
Naoyuki Watanabe ◽  
Yukio Nakatsuchi ◽  
Masahiro Kusakabe ◽  
Shigeru Tadano ◽  
...  
Keyword(s):  
Stress Distribution ◽  
Cancellous Bone ◽  
Bone Mechanics ◽  
Human Femur ◽  
Femur Bone

A level set-based topology optimization for fluid-structure coupled problems by using two-phase material model

2016 ◽  
Vol 140 (4) ◽  
pp. 3430-3430
Author(s):  
Takashi Yamamoto ◽  
Yuki Noguchi ◽  
Takayuki Yamada ◽  
Kazuhiro Izui ◽  
Shinji Nishiwaki
Keyword(s):  
Topology Optimization ◽  
Level Set ◽  
Material Model ◽  
Coupled Problems ◽  
Two Phase ◽  
Fluid Structure

Developing an Advance Tire Hydroplaning Model Using Co-Simulation of Fully Coupled FEM and CFD Codes to Estimate Cornering Force

2018 ◽  
Author(s):  
Ashkan Nazari ◽  
Lu Chen ◽  
Francine Battaglia ◽  
Saied Taheri
Keyword(s):  
Cfd Model ◽  
Fluid Structure Interactions ◽  
Two Phase ◽  
Fluid Structure ◽  
The Public ◽  
Element Size ◽  
Road Surfaces ◽  
Computational Fluid Dynamics Cfd ◽  
Fully Coupled ◽  
Surrounding Fluid

Hydroplaning is a phenomenon which occurs when a layer of water between the tire contact patch and pavement pushes the tire upward. The tire detaches from the pavement, preventing it from providing sufficient forces and moments for the vehicle to respond to driver’s control inputs such as breaking, acceleration and steering. This work is mainly focused on the tire and its interaction with the pavement to address hydroplaning. Fluid Structure Interactions (FSI) between the tire-water-road surfaces are investigated through two approaches. In the first approach, the coupled Eulerian-Lagrangian (CEL) formulation was used. The drawback associated with the CEL method is the laminar assumption and that the behavior of the fluid at length scales smaller than the smallest element size is not captured. As a result, in the second approach, a new Computational Fluid Dynamics (CFD) Fluid Structure Interaction (FSI) model utilizing the shear-stress transport k-ω model and the two-phase flow of water and air, was developed that improves the predictions with real hydroplaning scenarios. Review of the public literature shows that although FEM and CFD computational platforms have been applied together to study tire hydroplaning, developing the tire-surrounding fluid flow CFD model using Star-CCM+ has not been done. This approach, which was developed during this research, is explained in details and the results of hydroplaning speed and cornering force from the FSI simulations are presented and validated using the data from literature.

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