Reverse Engineering of Human Body: A B-spline based Heterogeneous Modeling Approach

Bhatt, Amba D.; Warkhedkar, Ravi M.

doi:10.3722/cadaps.2008.194-208

Cited by 17 publications

(12 citation statements)

References 40 publications

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“…The processed grided data points of a group of slices are treated as control points. The B-spline triparametric hyperpatch (see Bhatt and Warkedkar, 2008;Warkhedkar and Bhatt, 2008) approach is used to represent solid model of proximal femur. Generally, in B-spline triparametric hyperpatch a point P(x, y, z, M) is represented as follows:…”

Section: Model Generation and Determination Of Materials Propertiesmentioning

confidence: 99%

A B-spline based heterogeneous modeling and analysis of proximal femur with graded element

Pise

Bhatt

Srivastava

et al. 2009

Journal of Biomechanics

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Section: Model Generation and Determination Of Materials Propertiesmentioning

confidence: 99%

A B-spline based heterogeneous modeling and analysis of proximal femur with graded element

Pise

Bhatt

Srivastava

et al. 2009

Journal of Biomechanics

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“…The B-spline tensor product modeling methodology is presented in this paper to model both geometry and material variation of human body slice from CT scan image. As B-splines are known to represent the freeform objects closely, it is proposed to represent both, the geometry and the density with B-splines [30]. The limitation of Med CAD interface is the incapability to capture details and complex tissue anatomical features, particularly for features with complex geometry [26] Figure 1.…”

Section: Cad In Tissue Engineeringmentioning

confidence: 99%

Recent Development in Finite Element Methods and Computer Aided Design in the Development of Porous Scaffolds-A Review

Sahai¹,

Rp²

2012

J Tissue Sci Eng

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Tissue engineering the development of functional substitute to replace missing or malfunctioning human tissue and organs by using biodegradable biomaterials as scaffolds to direct specific cell types to organize into three dimensional structures and perform differentiated function of targeted tissue. The important factors to be considered in designing of microstructure were porosity, pore size, and pore structure with respect to nutrient supply for transplanted and regenerated cells. Performance of various functions of the tissue structure depends on porous scaffold microstructures with specific porosity, pore size, characteristics that influence the behavior of the incorporated cells. Finite element Methods (FEM) and Computer Aided Design (CAD) combines with manufacturing technologies such as Solid Freeform Fabrication (SFF) helpful to allow virtual design, characterization and production of porous scaffold optimized for tissue replacement with appropriate pore size. Finite Element Modeling used to calculate the stress areas in a complex scaffold structures and thus predict their mechanical behavior during in vivo environment (eg. As load bearing in bone tissue scaffolds) is evaluated. This article reviews recent development and application of Finite Element Methods (FEM) and Computer Aided Design and computer-aided manufacturing (CAD & CAM), and rapid prototyping (RP) technology in the development of porous tissue scaffolds.

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“…where respectively. The description about the in-house development of this model is available in Bhatt et al [1] and Warkhedkar et al [33].…”

Section: B-spline Based Heterogenous Model Formulationmentioning

confidence: 99%

“…The processed gridded data points of the group of the slices are treated as control points. Further processing of the data was done with in-house developed modeling software [1]. The B-spline triparametric hyperpatch [1], [33] approach is used to represent solid model of proximal femur.…”

Section: Model Generation and Determination Of Materials Propertiesmentioning

confidence: 99%

Influence of Isotropic and Orthotropic Relationships on the Accuracy of B-spline Based Heterogeneous Graded Finite Element Modeling of Proximal Femur

Pise¹,

Bhatt²,

Srivastava³

2012

Computer-Aided Design and Applications

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Bone is a highly heterogeneous object. Its composition and structure both vary and depends upon skeletal site, physiological function and age. The goal of this study is to investigate the importance of including material anisotropy in B-Spline based heterogeneous graded (BSBHG) FE model of proximal femur. Five different BSBHG FE models are developed. Out of these five models, four are orthotropic models and one is isotropic model. Each model is simulated in simple stance load condition and their biomechanical response is evaluated and compared with each other as well as those of experimental results given in one of the reference paper for the same specimen in simple stance load condition. The Lagrangian graded element approach is used to assign inhomogeneous isotropic and orthotropic elastic constants in finite element model to improve the performance. Based on the analysis of the two parameters, maximum equivalent Von Mises stress and the displacement in 'z' direction, comparison is achieved. The displacement and Von Mises results have shown that there is small difference between one of the orthotropic model and the isotropic model while the displacement results of the other two orthotropic models show good agreement with the experimental findings. The global strain prediction accuracy for orthotropic model has improved over isotropic model: the regression coefficient increased from 0.63 to 0.9-0.96.

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Reverse Engineering of Human Body: A B-spline based Heterogeneous Modeling Approach

Cited by 17 publications

References 40 publications

A B-spline based heterogeneous modeling and analysis of proximal femur with graded element

A B-spline based heterogeneous modeling and analysis of proximal femur with graded element

Recent Development in Finite Element Methods and Computer Aided Design in the Development of Porous Scaffolds-A Review

Influence of Isotropic and Orthotropic Relationships on the Accuracy of B-spline Based Heterogeneous Graded Finite Element Modeling of Proximal Femur

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