Structural model with contact between pulmonary alveolus walls. / Modelo estrutural com contato entre paredes de alvéolo pulmonar.

AUTOR(ES)

Rudolf de Almeida Prado Hellmuth

DATA DE PUBLICAÇÃO

2010

RESUMO

This work is an important step on the development of a computational model of lung parenchyma capable to simulate mechanical ventilation maneuveres. The lung has a complex and hierarchized structure. Therefore a multidisciplinary literature review was held. The review presents the mechanical properties of the parenchyma, its morphology and the effects of surface tension to septums contraction and adhesion. An important aspect for the alveolus model is a contact model which includes the adhesion caused by surface tension. Thus a simplified model was developed and then simulated in a structure with properties of the same order of magnitude of a real alveolus. The simulation was performed with the nonlinear finite element method. The implementation of the arc-length method was also necessary in order to prevent diversion at limit points. The numerical results were close to whole lung experimental results with pressure levels of the same order of magnitude.

ASSUNTO(S)

tissue mechanics finite element method biomecânica biomechanics mecânica de tecidos método dos elementos finitos lung desease doença pulmonar (especialidade)

Documentos Relacionados

• Terapêutica experimental com células mononucleares da medula óssea em modelo animal de enfisema pulmonar.
• Análise estrutural de edifícios de paredes de concreto armado
• Modelo de atrito estático em interfaces de contato entre concreto e areia
• Cisalhamento nas interfaces verticais de paredes de edifícios de alvenaria estrutural
• Interação de paredes em alvenaria estrutural cerâmica sob ações verticais