The variable geometry truss mechanisms have been studied extensively and systematically by this project. The research plan has been completed all sidedly, and expected results have been obtained. Three new kinds of combination decahedrons and a new class of variable geometry truss mechanism, which is composed of an octahedron and three tetrahedrons connected in parallel form, are proposed. The position analyses for decahedrons, dodecahedrons, triple-octahedrons, combinations decahedron and a new type of structure of variable geometry truss mechanisms are presented by introducing additional extra linear displacement sensors and using resultant elimination and homotopy continuation algorithms. The method of kinematical analysis of variable geometry truss mechanisms is established.

課題組對(duì)變幾何桁架機(jī)構(gòu)進(jìn)行了深入的研究国产迷奸在线观看，全面地完成了研究計(jì)劃女人丨8毛片一级毛片，取得了預(yù)期的成果；提出了三種新的十面體組合機(jī)構(gòu)以及由一個(gè)八面體和三個(gè)四面體組成的新型變幾何桁架機(jī)構(gòu)的結(jié)構(gòu)形式；應(yīng)用結(jié)式消元大陆免费高清不卡黄色视频、附加傳感器和同倫方法等提出了十面體人人操人人摸人人看、十二面體、三重八面體A片免费网址在线观看麻豆、組合十面體和新型變幾何桁架機(jī)構(gòu)的位置分析方法；建立了變幾何桁架機(jī)構(gòu)運(yùn)動(dòng)分析的一般方法狼色在线tom；建立了簡(jiǎn)潔的凱恩和拉格倫日動(dòng)力學(xué)的模型国产欧美日韩一区二区；應(yīng)用有限元和子結(jié)構(gòu)方法，提出了變幾何柞架機(jī)構(gòu)彈性動(dòng)力學(xué)模型AV网黄色网，導(dǎo)出了逆動(dòng)力學(xué)方程的顯式形式99久久无色码中文字幕；設(shè)計(jì)和研制了一臺(tái)可折疊的八面體變幾何杵架機(jī)構(gòu)裝置等。

This paper proposes an algorithm to divide an arbitrary polyhedron to tetrahedrons and gives its theoretical basis, data type and implementation.

本文提出了一種將任意多面體剖分為四面體的算法色色五月天网，給出了算法理論基礎(chǔ)的證明国产很爽很舒服的视频、算法具體實(shí)現(xiàn)步驟及所用數(shù)據(jù)結(jié)構(gòu)。

This structure took threefold-symmetric Bricard linkages,composed of six tetrahedrons,as fundament,and implemented retractability through tetrahedrons' rotation around the adjacent hinges.

這種結(jié)構(gòu)以6個(gè)四面體構(gòu)件形成的三向?qū)ΨQ環(huán)形連桿機(jī)構(gòu)為基礎(chǔ)视频一二区在线，通過四面體繞相鄰鉸轉(zhuǎn)動(dòng)實(shí)現(xiàn)結(jié)構(gòu)的閉合和開啟国产成人影院在线观看。

These techniques, element deletion and face swapping, will be used for improving stability of tetrahedrons in this thesis.

試驗(yàn)結(jié)果表明：此法在一定程度上避免了狹長(zhǎng)單元和扁平單元的產(chǎn)生。

The quality and quantity of the newly generated tetrahedrons will greatly affect the subsequent computations.

2四面體單元穩(wěn)定性的提高四面體重構(gòu)后新產(chǎn)生的單元的數(shù)量和質(zhì)量將直接影響到模型后續(xù)計(jì)算黄色A片三级三级三级免费看。

perspective tetrahedrons：透視四面形

perspective relation 透視關(guān)系 | perspective representation 余輝殘留圖象顯示 | perspective tetrahedrons 透視四面形

Frames made of Hollow Tetrahedrons：空心四面體框架群

鋼筋混凝土框架柱:column in RC frames | 空心四面體框架群:Frames made of Hollow Tetrahedrons | 消能偏心支撐框架:energy eccentrically braced frames