MAKİNA MÜHENDİSLİĞİ BÖLÜMÜ ME 492 ENGINEERING PROJECT

PROJECT ANNOUNCEMENT

Fall 2025

Title: Computational Modeling of Anisotropy in Compact Bone Based on the Rotating Plywood Model

Ref Code: OCN_F250C2

Type: Group

Status: New

Availability: 1 Student

Project Description:

Bone is a lightweight, hierarchical composite material whose mechanical properties depend strongly on anisotropy across multiple scales. At the osteon level, anisotropy arises from the arrangement of mineralized collagen fibrils (MCFs) within lamellae. Previous work has computationally validated anisotropy predictions of the rotating plywood model for a single osteon and shown consistency with reported hardness values in the literature.

The next stage of this research is to extend the rotating plywood model to the scale of compact bone. This requires modeling multiple osteons and interstitial lamellae, integrating fibrillar orientation patterns into a composite mechanics framework, and simulating macroscopic anisotropy behavior under different loading conditions.

Finite Element Analysis (FEA) will be applied to model compact bone as a hierarchical composite, with fibril orientations represented according to the rotating plywood model. The project will quantify anisotropy ratios at the tissue level and compare them with available experimental data.

Work Description:

· Literature review on bone anisotropy and hierarchical composite modeling

· Development of geometric models for multiple osteons and compact bone regions

· Application of the rotating plywood model to lamellar arrangements at larger scales

· Finite Element Analysis of mechanical anisotropy under different loading conditions

· Comparison of computational predictions with reported experimental results

Required Qualifications and Skills:

· Knowledge of composite materials and mechanics of composites

· Familiarity with anisotropy and hierarchical structures in biological materials

· Experience in CAD modeling and Finite Element Analysis (ANSYS, Abaqus, or equivalent)

· Ability to interpret mechanical simulation results

· Careful documentation and scientific reporting skills

Related UN Sustainable Development Goals:

· No. 3 Good Health and Well-Being

· No. 9 Industry, Innovation and Infrastructure

Difficulty: high (X) medium ( ) low ( )

Time commitment: high (X) medium ( ) low ( )

Estimated expense: 500–1000 TL (mostly computer simulations)