1) shallow double curved shells
扁双曲壳
1.
Because many variables are used in the finite element method and the computation is complex,this research has used Bezier surface patches as the admissible displacement fields to represent the shell\'s middle surface displacement and rotation components,the deformation of the shallow double curved shells under the loads are studied with a Semi-analytical procedure.
板壳结构主要采用有限单元法进行结构设计分析,由于有限单元法设计变量较多,计算复杂,采用Bezier曲面多项式为壳体中面位移和转动分量的试解函数,用半解析法分析了复合材料扁双曲壳在外载荷作用下的变形。
2) double-curved autobody panel
双曲扁壳
1.
The numerical simulation of double-curved autobody panel′s static dent resista nce;
双曲扁壳覆盖件静态抗凹性数值模拟研究
3) double-curved shallow shell
双曲度扁壳
1.
Experiment study on shape defect of double-curved shallow shells;
双曲度扁壳形状不良的实验研究
2.
The surface deflection was studied through the experiments of rectangle double-curved shallow shell drawing parts, and the measured method and evaluated criterion of surface deflection were presented.
以矩形双曲度扁壳为模型 ,研究了其拉深件面畸变分布、评价方法及形成机制 ,得到了压边力、型面曲率半径 (凸模弦高 )、板料厚度、材料性能、拉深筋对面畸变的影响规律 ,为面畸变的工程控制提供了基本依
4) double layer hyperboloid latticed flat shell
双层双曲扁网壳
1.
In this paper,double layer hyperboloid latticed flat shells free vibration differential equation are founded according to the method of simulated shell,and then,its frequeney and amplitude are derived.
建立双层双曲扁网壳的拟壳法自由振动微分程方程,求解其自振频率与振型,编制计算程序,并通过实例计算与有限元法进行比较。
5) Double arch and flat shell structure
双曲扁壳结构
1.
Though 37 years passed after the double arch and flat shell structure applied in the water power engineering, the rubber canvas faceplate has never been used.
薄壳空间结构具有很多优点 ,我国在水工闸门中使用双曲扁壳结构的历史已有 37年 ,但尚未见到采用橡胶布面板的。
6) linear double-curved shallow shell
线性双曲扁壳
1.
This paper has given an exact solution to partial differential equations of linear double-curved shallow shells using the method of separation variable and the principle of superposition under the conditions of the simple supports to all the four boundaries with general loads.
用分离变量法及叠加原理,给出了线性双曲扁壳体方程组,得到在四边简支,承受一般载荷的条件下的准确
补充资料:双曲扁壳闸门
双曲扁壳闸门
double-curved shallow shell gate
shuangqu bianqiao zhamen双曲扁壳闸门(double一eurved shallowshell gate)门叶采用双曲扁壳结构形式的闻门适用于低水头水工建筑物。双曲扁壳是一种良好的结构形式,大量应用在工业与民用建筑工程上。中国自201让纪60年代开始,将双曲扁壳引用到水闸的闸「1上。最初采用的是由钢丝网水泥和钢筋混凝土制作、并由凸面承受水压力的正向扁壳闸门,随后出现了钢制扁壳闸门和由凹面承受水压力的反向扁壳闸门,应用范围也由水闸扩展到船闸等建筑物(见钢丝网水泥薄壳闸门)。20多年运行经验表明扁壳闸门是成功的。应注意的问题有:①启闭力计算中要考虑壳体曲面空间的影响,正向扁壳闸门作用有较大的浮力,反向扁壳闸门包含有较大的水重;②正向钢扁壳闸门的板厚不宜太薄,以防丧失稳定;③钢丝网水泥扁壳闸门施工时要严格控制保护层厚度,砂浆振捣要密实,表面要淤光,并涂以防水涂料,以防钢丝网锈蚀。 (夏念凌)
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