This paper deals with the parametrization of balanced multiwavelets and different properties associated with them. We introduce the property balancing symmetry and orthogonal properties of multiwavelet and link these ...This paper deals with the parametrization of balanced multiwavelets and different properties associated with them. We introduce the property balancing symmetry and orthogonal properties of multiwavelet and link these properties to the matrix of the lowpass synthesis rnultifilter. Using these new results, we present the parametrization of orthogohal multiwavelets of flip-symmetry with length two and three. This is a direct construction method, making the construction of the balanced multiwavelet as easy as the scalar wavelet.展开更多
Assembly simulations such as assembly process simulation and assembly tolerance simulation have become an effective means to evaluate and analyze product assembly design and assembly process planning.Being core aspec...Assembly simulations such as assembly process simulation and assembly tolerance simulation have become an effective means to evaluate and analyze product assembly design and assembly process planning.Being core aspect of simulation implementation,building an assembly simulation model is rather time-consuming because of its high complexity.Furthermore,modeling has a significant influence on the popularization and application of simulation technology.In this paper,data needed by assembly process and tolerance simulation are addressed to propose a data-driven approach for assembly simulation modeling.The application process and the architecture of modeling framework for assembly simulation are presented as well.An assembly sequence simulation example is given to illustrate the application of the framework.The framework provides a new idea for the realization of automatic modeling for assembly simulation.展开更多
Calculation of assembly clearance is the basis of analysis on assembly problems,and the real assembly surface is the nonideal surface.In this paper,the concept of assembly clearance on nonideal surface is defined and...Calculation of assembly clearance is the basis of analysis on assembly problems,and the real assembly surface is the nonideal surface.In this paper,the concept of assembly clearance on nonideal surface is defined and the calculation algorithm of assembly clearance is designed.Based on the calculation,the concept of clearance surface is put forward to express the distribution of assembly clearance on nonideal surface as it can assist the analysis of assembly problems.Finally,the effectiveness of the algorithm is verified by the calculation of the assembly clearance between the surfaces of piston and cylinder.展开更多
文摘This paper deals with the parametrization of balanced multiwavelets and different properties associated with them. We introduce the property balancing symmetry and orthogonal properties of multiwavelet and link these properties to the matrix of the lowpass synthesis rnultifilter. Using these new results, we present the parametrization of orthogohal multiwavelets of flip-symmetry with length two and three. This is a direct construction method, making the construction of the balanced multiwavelet as easy as the scalar wavelet.
基金the National Science Foundation of China(Grant No.51575031)the Graduate Student Innovation Fund of Beihang University and the key program of the Engineering Research Center of Complex Product Advanced Manufacturing System,Ministry of Education.
文摘Assembly simulations such as assembly process simulation and assembly tolerance simulation have become an effective means to evaluate and analyze product assembly design and assembly process planning.Being core aspect of simulation implementation,building an assembly simulation model is rather time-consuming because of its high complexity.Furthermore,modeling has a significant influence on the popularization and application of simulation technology.In this paper,data needed by assembly process and tolerance simulation are addressed to propose a data-driven approach for assembly simulation modeling.The application process and the architecture of modeling framework for assembly simulation are presented as well.An assembly sequence simulation example is given to illustrate the application of the framework.The framework provides a new idea for the realization of automatic modeling for assembly simulation.
基金National Natural Science Foundation of China(Grant No.51575031)the key program of the Engineering Research Center of Complex Product Advanced Manufacturing System,Ministry of Education.
文摘Calculation of assembly clearance is the basis of analysis on assembly problems,and the real assembly surface is the nonideal surface.In this paper,the concept of assembly clearance on nonideal surface is defined and the calculation algorithm of assembly clearance is designed.Based on the calculation,the concept of clearance surface is put forward to express the distribution of assembly clearance on nonideal surface as it can assist the analysis of assembly problems.Finally,the effectiveness of the algorithm is verified by the calculation of the assembly clearance between the surfaces of piston and cylinder.
