正四角錐 的英文怎麼說
中文拼音 [zhēngsìjiǎozhuī]
正四角錐
英文
square pyramid-
Comparison of the layout of cables for the prestressed square pyramid space grids
預應力正放四角錐網架布索方案比較The rule of free vibration and vertical seismic action of pyrimid space grid ( psg ) roof structures are studied in this paper
本文主要研究平板型周邊支承正放四角錐網架的固有振動規律和豎向地震作用。It is comprised of a sensor head ( a quadrangular pyramid tip, a base, four quartz crystal plates ) and a network analyzer and an apparatus to apply three - axis force. according to mechanics, four plates of the quadrangular pyramid tip correspondingly receive four one - dimension forces when applying a three - axis force to the sensor head. because quartz crystal has a force - frequency effect, namely, resonance frequency change of the quartz crystal is in direct proportion to one - dimension forces applying to it, four certain resonance frequency changes of the four quartz crystal plates are corresponding to a three - axis force
當傳感頭受三軸力作用時，根據力學的分析可以確定三軸力與四角錐體四個面上單向力之間的對應關系，用分別貼在四角錐體四個面上的四片壓電石英晶體作為壓敏元件，由於石英晶體的力頻效應（即石英晶體在受到應力作用時，它的諧振頻率與應力大小成正比） ，從而最終確定了四片石英晶體的諧振頻率改變量與傳感頭上所受三軸力大小和方向之間的對應關系。Principals of how to ensure geometry parameter of space grids finite element model are given and f90 program to calculate member force and chord section is developed according < < space grid design and construction code > > ( sgdc code ) so as to determine the real constant ansys needed. to create finite element model of psgs, program to create node, element number and restriction information is compiled also
給出了確定網架有限元模型幾何參數應遵循的一般原則，並依據《網架結構設計與施工規程》中網架內力計算演算法編制了計算周邊簡支條件下正放四角錐網架內力和桿件截面f90程序，從而確定採用ansys進行網架計算所需的單元實常數。Natural vibration analysis of pyramid space grid roof structures
正放四角錐網架屋蓋的固有振動分析Analyzing the characteristics of natural vibration of square pyramid space grids under different support forms
不同支承形式正放四角錐網架自振特性分析Experimental study on prestressed orthogonal square pyramid composite space truss
預應力正放四角錐組合網架結構試驗研究分享友人