Zewu Wang
Associate Professor Supervisor of Master's Candidates
Gender:Male
Alma Mater:Huazhong University of Science and Technology
Degree:Doctoral Degree
School/Department:School of Chemical Machinery & Safety
Discipline:Chemical Process Equipment. Safety Science and Engineering
Business Address:H317,Building of Chemical Machinery
Contact Information:wangzewu@dlut.edu.cn
E-Mail:wangzewu@dlut.edu.cn
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Indexed by:期刊论文
Date of Publication:2017-07-01
Journal:JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
Included Journals:SCIE、EI、PubMed、Scopus
Volume:71
Page Number:262-270
ISSN No.:1751-6161
Key Words:PDLLA/nano-HA composites; Mechanical properties; Compressible hyper-elastic; Constitutive Modeling
Abstract:Poly-D-L-lactide/nano-hydroxyapatite (PDLLA/nano-HA) can be used as the biological scaffold material in bone tissue engineering as it can be readily made into a porous composite material with excellent performance. However, constitutive modeling for the mechanical response of porous PDLLA/nano-HA under various stress conditions has been very limited so far. In this work, four types of fundamental compressible hyper-elastic constitutive models were introduced for constitutive modeling and investigation of mechanical behaviors of porous PDLLA/nano-HA. Moreover, the unitary expressions of Cauchy stress tensor have been derived for the PDLLA/nano-HA under uniaxial compression (or stretch), biaxial compression (or stretch), pure shear and simple shear load by using the theory of continuum mechanics. The theoretical results determined from the approach based on the Ogden compressible hyper-elastic constitutive model were in good agreement with the experimental data from the uniaxial compression tests. Furthermore, this approach can also be used to predict the mechanical behaviors of the porous PDLLA/nano-HA material under the biaxial compression (or stretch), pure shear and simple shear.
