Biomechanical model and finite element analysis on electromechanical behaviours in bone tissues
AIM: Based on researching the relationship of stress and streaming potential in bone tissues by numerical methods, biomechanical properties of bone can be understood. And physiological and pathological phenomenon can be explained. There is important significance on auxiliary physical rehabilitation techniques researching for treatment of bone fracture and related diseases. METHODS: Upon physiological structure of bone tissue, the porous media theory associated with electro-kinetics was used to model the electromechanical effects in bone tissue. The finite element governing equations were built up through Galerkin method and the penalty method. The distortion of skeleton, interstitial fluid flow and the streaming potential in bone tissue were numerically computed and simulated. Then the results will be compared with experiments. RESULTS: The relationship of streaming potential and frequency and magnitude of loading is gained. CONCLUSION: The magnitude of streaming potential is increasing with the loading frequency, and the slope is declining. The relations of the phase difference of streaming potential and load is just opposite with amplitude changing. The phase difference is declining with the loading frequency increasing.
porous mediaelectromechanical behavioursstreaming potentialfinite element method
NETL
NSTL
万方数据
维普
