在结构有限元分析中,内力或应力均与截面特性有关。在实体建模分析时,由于截面的几何尺寸均为已知,故软件会自动计算特性;但有时为了提高分析效率和简化模型会采用简化的单元,就需要对截面的相关特性进行指定。截面特性是结构有限元分...在结构有限元分析中,内力或应力均与截面特性有关。在实体建模分析时,由于截面的几何尺寸均为已知,故软件会自动计算特性;但有时为了提高分析效率和简化模型会采用简化的单元,就需要对截面的相关特性进行指定。截面特性是结构有限元分析求解中的重要数据,主要包括面积、抗弯惯性矩、扭转惯性矩和截面形心等。文中主要介绍使用软件AUTO CAD、M IDAS SPC和ANSYS来计算截面主要特性的方法,并比较三者的计算结果,给出使用指导意见,因此具有较强的实用意义。展开更多
In order to realize the auto-generation of clothing paper pattern making and reduce the reliance on the experience of clothing pattern makers,by simulating the experience of the clothing pattern maker through back pro...In order to realize the auto-generation of clothing paper pattern making and reduce the reliance on the experience of clothing pattern makers,by simulating the experience of the clothing pattern maker through back propagation(BP)neural network,400 children’s body measurements are collected and drawn into the clothing paper pattern,and the children’s body measurements and the pattern sizes generated through the children’s clothing structure design rules are imported into MATLAB neural network toolbox and a neural network model is established to automatically become the predicted pattern size.Then the parametric mathematical model of children’s clothing paper pattern is established and the children’s body measurements is imported into Auto-CAD parametric function to generate children’s clothing paper pattern automatically.The experimental interface and the virtual try-on interface are demonstrated and their effects are evaluated.The results show that the production rate of clothing paper patterns is improved by the auto-generation method,which is of positive significance to the intelligent production of clothing enterprises.展开更多
本文通过对高级语言、dBASEⅢ和 Auto LISP 语言读写文件的形式进行分析,利用它们之间往返的数据传输,实现了高级语言、dBASEⅢ系统和 Auto CAD 系统一体化的计算机辅助设计及自动绘图的方法;着重介绍了 Basica、True Basic、dBASEⅢ系...本文通过对高级语言、dBASEⅢ和 Auto LISP 语言读写文件的形式进行分析,利用它们之间往返的数据传输,实现了高级语言、dBASEⅢ系统和 Auto CAD 系统一体化的计算机辅助设计及自动绘图的方法;着重介绍了 Basica、True Basic、dBASEⅢ系统和 Auto CAD 系统之间实现往返连接的技术措施,并附有已在 IBM PC/XT、AT 或兼容机上通过了的有关程序。展开更多
文摘在结构有限元分析中,内力或应力均与截面特性有关。在实体建模分析时,由于截面的几何尺寸均为已知,故软件会自动计算特性;但有时为了提高分析效率和简化模型会采用简化的单元,就需要对截面的相关特性进行指定。截面特性是结构有限元分析求解中的重要数据,主要包括面积、抗弯惯性矩、扭转惯性矩和截面形心等。文中主要介绍使用软件AUTO CAD、M IDAS SPC和ANSYS来计算截面主要特性的方法,并比较三者的计算结果,给出使用指导意见,因此具有较强的实用意义。
文摘In order to realize the auto-generation of clothing paper pattern making and reduce the reliance on the experience of clothing pattern makers,by simulating the experience of the clothing pattern maker through back propagation(BP)neural network,400 children’s body measurements are collected and drawn into the clothing paper pattern,and the children’s body measurements and the pattern sizes generated through the children’s clothing structure design rules are imported into MATLAB neural network toolbox and a neural network model is established to automatically become the predicted pattern size.Then the parametric mathematical model of children’s clothing paper pattern is established and the children’s body measurements is imported into Auto-CAD parametric function to generate children’s clothing paper pattern automatically.The experimental interface and the virtual try-on interface are demonstrated and their effects are evaluated.The results show that the production rate of clothing paper patterns is improved by the auto-generation method,which is of positive significance to the intelligent production of clothing enterprises.
文摘本文通过对高级语言、dBASEⅢ和 Auto LISP 语言读写文件的形式进行分析,利用它们之间往返的数据传输,实现了高级语言、dBASEⅢ系统和 Auto CAD 系统一体化的计算机辅助设计及自动绘图的方法;着重介绍了 Basica、True Basic、dBASEⅢ系统和 Auto CAD 系统之间实现往返连接的技术措施,并附有已在 IBM PC/XT、AT 或兼容机上通过了的有关程序。
