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Simulation on human respiratory motion dynamics and platform construction

Bao Yudong, Li Xu, Wei Wen, Qu Shengquan, Zhan Yang

Biocybernetics and Biomedical Engineering

2023

Vol. 43, no. 4

736--750

Bronchoscopy has a crucial role in the current treatment of lung diseases, and it is typical of interventional medical instruments led by manual intervention. The scientific study of bronchoscopy is now of primary importance in eliminating problems associated with manual intervention by scientific means. However, for its intervention environment, the trachea is often treated statically, without considering the effect of tracheal deformation on bronchoscopic intervention during respiratory motion. Therefore its findings can deviate from practical application. Thus, studying kinetic problems in respiratory motion is of great importance. This paper developed a mathematical model of mechanical properties of respiratory motion to express respiratory force from the perspective of dynamics of respiratory motion. The dynamical model was solved using MATLAB. Then, a finite element model of respiratory motion was built using Mimics, and the results of respiratory force solution were used as the load of model for dynamics simulation in ABAQUS. Then, a human–computer interaction platform was designed in MATLAB APP Designer to realize parametric calculation and fitting of respiratory force, and a personalized human respiratory motion dynamics simulation was completed in conjunction with ABAQUS. Finally, experimental validation of the interactive platform was performed using pulmonary function test data from three patients. Validation analysis by respiration striving solution, kinetic simulation and experiment found that Dynamical model and simulation results can be better adapted to the individualized study of human respiratory motion dynamics.

Effect of extrusion blow molding bottle neck area structural form on deformation during application of the closure

Pepliński K.

Journal of Polish CIMEEAC

2015

Vol. 10, no 1

133--138

Bottles obtained by unbounded extrusion blow molding process must first be designed to meet a number of specific requirements related to the phase of filling and subsequently closing on the production line, and during their use. Closing phase in plastics blowing packaging often is critical. Value of the force necessary for the integral connection of the closure (cap) with the neck and bottle body can cause excessive displacements in some part of bottle. Often this involves the improper design of the neck part of the blowing package. The influence of PE-HD bottle wall thickness and the modified construction on deformation occurring during bottle closing phase was presented – closing closure onto the neck of the bottle. These phenomena are verified through software Abaqus simulation.