【摘 要】
：
CAD model with consistent topology is a fundamental precondition in many fields.Currently,on-uniform rational B-spline(NURBS)is a standard method for free-f
【机 构】
：
StateKeyLaboratoryofAdvancedDesignandManufacturingforVehicleBody,CollegeofMechanicalandVehicleEngine
【出 处】
：
第五届亚太国际工程中计算方法学术会议暨第11届全国工程计算方法学术会议
论文部分内容阅读
CAD model with consistent topology is a fundamental precondition in many fields.Currently,on-uniform rational B-spline(NURBS)is a standard method for free-form curves and surfaces sculpting in commercial modeling software.However,as we known,NURBS has some disadvantages such as its control points must lie topologically in a rectangular grid and using trimming operator for the purpose of exact expression of the complex objects cause a problem that there will be a gap between two trimmed NURBS surfaces when we put them back together.This problem is not new.But it has puzzled CAD for over twenty years.Besides,due to the reason such as the different tolerance of modeling system after the model data transmission,there also may be some geometry noises.
其他文献
In this paper,a new plane shape-free multi-node singular hybrid stress-function(HS-F)element with drilling degrees of freedom,which can accurately capture t
In this article,the Cauchy data are used to determine the temperature and heat source simultaneously for materials with nonlinear heat conduction coefficien
In the present work,the stress intensity factors of cracks in two tightly coupled elastic solids,the particle and the matrix under far field load in full sp
Cellular automaton has been widely used in various fields.In this study,a numerical algorithm based on the concept of cellular automaton is proposed to mode
Investigation on high-velocity impact and its shielding structures are of great importance to spacecraft due to existence of a large number of orbital debri
Within a successful CAE driven product development,there are two fundamental issues: a seamless interaction between the CAD and CAE software tools and a fas
In this study,an explicit expression is derived for body forces and fluid sources equivalent to a general dynamic dislocation in a fluid-saturated porous.Th
A time domain boundary integral equation method,which is named as quasi-initial condition method [1-3],is applied in this paper to solve the transient heat
A new method is proposed for the numerical evaluation of stress intensity factors(SIFs)for three-dimension(3D)corner crack problems in this paper.Accurate a
The perforated silencers are widely used in practical applications.One may face great challenge to model and calculate the transmission loss(TL)of perforate