检索结果-南通市图书馆

SIX-VARIABLE geometrical nonlinear LAMINATED THEORY FOR LARGE DEFORMATION

Acta Mechanica Solida Sinica 1999年第3期12卷 248-254页

作者： Tan Huifeng Yu Zengxin Du Xingwen Harbin Inst Technol Composite Mat Res Lab Harbin 150001 Peoples R China

A six-variable geometrical nonlinear shear deformation laminatedtheory is presented by which normal stress and strain distributioncan be calculated. by considering some affective factors that wereneglected under the finite deformation condition, an improved vonKarman geometrical non- linear deformation-strain relation is usedfor large deformation analysis. After analyzing the bending problemof laminated plates, and comparing it with 3-D elasticity solutionsand *** five-vari- able simple higher-order shear deformationlaminated theory, we can conclude that a satisfactory cal- culationprecision has been achieved, which shows that is especially suitablefor the calculation in the condition of large deformation and thelaminated thick plate analysis.

关键词： geometrical nonlinear laminated thoery six-variable

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

geometrical nonlinear Analysis of Orthotropic RectangularThin Plates with Three Edges Clamped and One EdgeSimply Supported

Geometrical Nonlinear Analysis of Orthotropic RectangularThi...

引用

第十三届国际复合材料会议

作者： Jiaming Yang and Xuejin YuDepartment of Applied Engineering Nanchang Institute of Aeroautical Technology Nanchang China (330034)

＜正＞In resent years, a lot of research works about geometrical nonlinear analysis of orthotropic plates have been made. Professor C.Y. Chia in Calgary University of Canada made systematic analysis about isotropic and orthotropic plates. At present, the most of study focus on four edges simply supported;four edges clamped;and the elastic rotation constrain boundary conditions of two opposite edges with the same support. But the study of nonlinear problem for three edges clamped and one edge simply supported is seldom reported. In the paper, the vibration functions of beam which can accurately meet the boundary conditions are presented. The functions with orthogonality advantage are fully used to transfer differential

关键词： three edges clamped and one edge simply supported orthotropic geometrical nonlinear algebraic equations

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Isolation performances and optimization of triple quasi-zero stiffness isolators

引用

Science China(Physics,Mechanics & Astronomy) 2024年第7期67卷 124-141页

作者： Yuntian Zhang Guangnan Zhu Qingjie Cao School of Astronautics Harbin Institute of TechnologyHarbin 150001China

In this paper,triple quasi-zero stiffness(QZS)passive vibration isolators whose restoring force curve has a three-stage softening effect are ***-coupled SD oscillators with three independent geometrical parameters are used as negative stiffness mechanisms to achieve QZS characteristics at the origin and symmetrical positions on both sides of the *** performances of different triple QZS isolators are analyzed to show influences of the selection of QZS regions away from the origin on the range of isolation *** optimizations of system parameters are carried out to get a larger range of small restoring force regions and small stiffness *** performances of two triple QZS isolators are discussed to show the influence of different Pareto optimization solutions through the comparisons with single and double QZS *** showed that triple QZS isolators have both the advantages of single and double QZS isolators which results in better isolation performances under both small and large excitation *** improvement in isolation performances for triple QZS isolators is found with the decrease in average stiffness due to the appearance of two symmetrical QZS regions away from the *** displacements of QZS regions away from the origin result in better isolation performances when excitation amplitude is large,and triple QZS characteristics are similar to double QZS isolators at this *** restoring forces of QZS regions away from the origin lead to better isolation performances when excitation amplitude is small,and triple QZS characteristics are similar to single QZS isolators at this *** with the decrease in average stiffness,the improvement of isolation performances shows a hysteresis phenomenon due to the difference between static and dynamic characteristics.

关键词： triple quasi-zero stiffness vibration isolation Pareto optimization force transmissibility geometrical nonlinear

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：