An approach to feature-based parametric design for die and mould is proposed in this paper.The assembly relationship and parts of the die and mould are described by feature.The dependent relationship of features is de...An approach to feature-based parametric design for die and mould is proposed in this paper.The assembly relationship and parts of the die and mould are described by feature.The dependent relationship of features is described by parent-child operator structure.The feature shape and location can be modified by design parameters.An expert system is used for deriving a geometry of the features which satisfies the given constraints.This approach provides a more natural and convenient method of representing a parametric model of the die and mould.展开更多
A hidden line removal algorithm for bi parametric surfaces is presented and illustrated by some experimental results. The enclosure test is done using area coordinates. A technique of moving box of encirclement is p...A hidden line removal algorithm for bi parametric surfaces is presented and illustrated by some experimental results. The enclosure test is done using area coordinates. A technique of moving box of encirclement is presented. It is found that the algorithm is of general purpose, requires minimal computer storage, has high accuracy and simplicity, and is very easy to be implemented on a computer.展开更多
In this paper a new generator for parametric drafting program is presented.The func- tions and the syntax of the parametric drafting program are described.This software has been suc- cessfully used to generate a param...In this paper a new generator for parametric drafting program is presented.The func- tions and the syntax of the parametric drafting program are described.This software has been suc- cessfully used to generate a parametric drafting program for designs of motors.展开更多
鉴于传统塔吊结构建筑信息模型(building information modeling,BIM)存在建模时间长、效率低、移植性差等问题,将塔吊结构拆分为多组构件模型,提出定位点分层建模思想,采用Dynamo软件实现塔吊构件的参数化建模。该参数化建模技术具有较...鉴于传统塔吊结构建筑信息模型(building information modeling,BIM)存在建模时间长、效率低、移植性差等问题,将塔吊结构拆分为多组构件模型,提出定位点分层建模思想,采用Dynamo软件实现塔吊构件的参数化建模。该参数化建模技术具有较好的移植性,可缩短模型修改时间,极大地提高塔吊结构BIM的建模效率,具有较好的工程应用价值。展开更多
文摘An approach to feature-based parametric design for die and mould is proposed in this paper.The assembly relationship and parts of the die and mould are described by feature.The dependent relationship of features is described by parent-child operator structure.The feature shape and location can be modified by design parameters.An expert system is used for deriving a geometry of the features which satisfies the given constraints.This approach provides a more natural and convenient method of representing a parametric model of the die and mould.
文摘A hidden line removal algorithm for bi parametric surfaces is presented and illustrated by some experimental results. The enclosure test is done using area coordinates. A technique of moving box of encirclement is presented. It is found that the algorithm is of general purpose, requires minimal computer storage, has high accuracy and simplicity, and is very easy to be implemented on a computer.
文摘In this paper a new generator for parametric drafting program is presented.The func- tions and the syntax of the parametric drafting program are described.This software has been suc- cessfully used to generate a parametric drafting program for designs of motors.
文摘鉴于传统塔吊结构建筑信息模型(building information modeling,BIM)存在建模时间长、效率低、移植性差等问题,将塔吊结构拆分为多组构件模型,提出定位点分层建模思想,采用Dynamo软件实现塔吊构件的参数化建模。该参数化建模技术具有较好的移植性,可缩短模型修改时间,极大地提高塔吊结构BIM的建模效率,具有较好的工程应用价值。
