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二维工程图形中相切关系分析及计算机编码方法
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作者 梅树立 江景涛 +1 位作者 陈忠良 张强 《中国农业大学学报》 CAS CSCD 北大核心 2000年第2期87-91,共5页
相切约束从位置关系上来说是一种较复杂的约束 ,多数相切约束存在多解情况 ,从多解中确定出和原来图形相符的解是图形参数化系统能否正确进行尺寸驱动的关键。为此 ,在深入研究二维工程图形中常见相切位置关系的基础上 ,结合矢量叉积的... 相切约束从位置关系上来说是一种较复杂的约束 ,多数相切约束存在多解情况 ,从多解中确定出和原来图形相符的解是图形参数化系统能否正确进行尺寸驱动的关键。为此 ,在深入研究二维工程图形中常见相切位置关系的基础上 ,结合矢量叉积的概念 。 展开更多
关键词 相切约束 矢量叉乘 工程图形 多数化设计
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Multidimensional CAE methods for car body structure optimization
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作者 Men Yongxin Ma Fangwu +2 位作者 Zhu Zhenying Zhang Jiyou Yuan Liantai 《Engineering Sciences》 EI 2012年第6期38-42,66,共6页
The computer aided engineering(CAE) analysis technique has become one of the most important means in modern automobile development due to its remarkably computing capability.With the development of CAE bussiness softw... The computer aided engineering(CAE) analysis technique has become one of the most important means in modern automobile development due to its remarkably computing capability.With the development of CAE bussiness software and intensive research on automotive development process,the CAE technique,which was only used as an auxiliary validation tool in the later product development in the past,is gradually used in each stage of product development now.Furthermore,accurate and fast analysis data can be supplied effectively.Especially in current CAE application, based on some optimization technologies such as sensitivity,feature and topology,the parametric design gradually enables a CAE engineer to be free from the condition which a convention analysis usually lags behind a design,and makes it be parallel to or even anterior to the design.Under the circumstance,the CAE resources can be maximized in each project development department,thereby promoting the project progress and quality,and creating a new philosophy of 'analysis-driven design'. 展开更多
关键词 BIW MODAL STIFFNESS SFE PARAMETERIZATION sensitivity topological optimization structural adhesive
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