【摘要】 采用质点—弹簧建模方法提出了人体软组织面模型和体模型系统、程式化的计算模型建立方法。将连续的软组织离散为由弹簧/阻尼器及与其连接的质点构成的离散系统,用邻接表来表示离散系统的拓扑结构,即弹簧—质点间的邻接关系,依据该信息,可自动建立方程并计算与每个质点连接的弹簧、阻尼器对质点的粘弹性力的贡献,然后采用4阶Runge Kutta方法对得到的微分方程组进行数值积分。通过小肠模型(面模型)和规则块状软组织模型(体模型)2个实例介绍了采用所提出的方法实施软组织变形仿真的过程。更多还原

【Abstract】 A computeroriented modeling method is presented for soft tissue deformation using massspring/damper models. The soft tissues are discretized to a massspring/damper system, and the topologies of the system are described using adjacent tables, then, the dynamical equations can be constructed based on the data stored in the adjacent tables. The 4th order RungeKutta method is used to integrate the equations of deformation. Two examples are given to test the method.更多还原