Numerical simulation of multilayer cellular scaffolds with 3D and 1D elements

الموضوعات :

Hamid Reza khanaki ¹ (Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran)
Sadegh Rahmati ² (Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran)
Mohammad Nikkhoo ³ (Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran)
Mohammad Haghpanahi ⁴ (Biomechanics Group, Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran)
Javad Akbari ⁵ (Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran)

تاريخ الإرسال : 16 الثلاثاء , ذو القعدة, 1441 تاريخ التأكيد : 16 الثلاثاء , ربيع الثاني, 1442 تاريخ الإصدار : 16 الثلاثاء , ربيع الثاني, 1442

الکلمات المفتاحية: Finite Element Modeling, Multilayer scaffold, Additive Manufacturing, numerical analysis, Open-lattice cellular scaffold,

ملخص المقالة :

In this paper, an attempt has been made to provide a numerical method for investigating the mechanical properties of multilayer scaffolding. These scaffolds can be used as implants in bone fractures. For this purpose two numerical simulation methods are introduced to predict the elastic properties of multilayer cell scaffolds. These simulations are based on two models: a 3D model with a volumetric element, and a 1D model with a linear element. To compare the results of these models, three types of two- and three-layer titanium alloy scaffolds have been simulated by the two methods. Also, Young's modulus of the scaffolds has been compared with the experimental conclusions of earlier studies. The results confirm that simulations with 1D models are more cost-effective compared to 3D ones. Additionally, because of the more reliable agreement of Young's modulus results of numerical modeling with the linear element (1.8 to 5 times) compared to the volumetric element (11 to 23 times) compared to the experimental findings, the numerical method with the linear elements can be a reliable tool for studying multilayer scaffoldings.

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