Comput. Biol. Med. - Dynamic finite element analysis and moving particle simulation of human enamel on a microscale.

Tópicos

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Resumo

CKGROUND: The study of biomechanics of deformation and fracture of hard biological tissues involving organic matrix remains a challenge as variations in mechanical properties and fracture mode may have time-dependency. Finite element analysis (FEA) has been widely used but the shortcomings of FEA such as the long computation time owing to re-meshing in simulating fracture mechanics have warranted the development of alternative computational methods with higher throughput. The aim of this study was to compare dynamic two-dimensional FEA and moving particle simulation (MPS) when assuming a plane strain condition in the modeling of human enamel on a reduced scale.METHODS: Two-dimensional models with the same geometry were developed for MPS and FEA and tested in tension generated with a single step of displacement. The displacement, velocity, pressure, and stress levels were compared and Spearmans rank-correlation coefficients R were calculated (p<0.001).RESULTS: The MPS and FEA were significantly correlated for displacement, velocity, pressure, and Y-stress.CONCLUSIONS: The MPS may be further developed as an alternative approach without mesh generation to simulate deformation and fracture phenomena of dental and potentially other hard tissues with complex microstructure.

Resumo Limpo

ckground studi biomechan deform fractur hard biolog tissu involv organ matrix remain challeng variat mechan properti fractur mode may timedepend finit element analysi fea wide use shortcom fea long comput time owe remesh simul fractur mechan warrant develop altern comput method higher throughput aim studi compar dynam twodimension fea move particl simul mps assum plane strain condit model human enamel reduc scalemethod twodimension model geometri develop mps fea test tension generat singl step displac displac veloc pressur stress level compar spearman rankcorrel coeffici r calcul presult mps fea signific correl displac veloc pressur ystressconclus mps may develop altern approach without mesh generat simul deform fractur phenomena dental potenti hard tissu complex microstructur

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