Hyper-elastic modeling and mechanical behavior investigation of porous poly-D-L-lactide/nano-hydroxyapatite scaffold material

Quan Feng Han, Ze Wu Wang, Chak Yin Tang, Ling Chen, Chi Pong Tsui, Wing Cheung Law

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)262-270
Number of pages9
JournalJournal of the Mechanical Behavior of Biomedical Materials
Publication statusPublished - 1 Jul 2017


  • Compressible hyper-elastic
  • Constitutive Modeling
  • Mechanical properties
  • PDLLA/nano-HA composites

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Mechanics of Materials

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