角形柱頭 的英文怎麼說

The main products include high - strength fasteners of 8. 8 and 12. 9 grade and stainless steel fasteners, like hex socket, set screw, hex socket countersunk screw, half - round head hex socket screw, torx head hilt, umbrella - type hilt, bsp line plug throat taps, straight pin, taper sleeve screw, connecting screw, spanner, flying ring, double end screw, hex nut, washer and so on

本公司主要經營8 . 8 、 12 . 9級高強度螺絲及不銹鋼緊固件，內六角、平杯、圓杯、機米、梅花頭刀把、傘形刀把、 bsp喉塞、塞打、圓柱銷、錐套螺絲、連接件專用螺絲、扳手、吊環、雙頭牙、外六角?螺母?墊圈等。

Hexagon lobular socket head cap screws - property class

內六角花形圓柱頭螺釘

Hexagon lobular socket thread forming screws

內六角花形圓柱頭自攻鎖緊螺釘

Based on extensive investigation of construction technique history of chinese ancient buildings, the structure method, structure developing history and seismic behavior of chinese ancient timber structure buildings are analyzed in several respects of the structural system and form. through a series of experiments on constituent parts of chinese ancient timber building structure, including the tests on the corbels and brackets called dougong subjected to low cyclic reversed loadings, the tests on the wooden frame using the tenon - mortise joints as connections of column and beam subjected to low cyclic reversed loadings, the tests on vibration isolation effect of friction and slippage between column footing and their socle base, and a series of shaking table tests on a chinese ancient timber structure palace building mode under artificial earthquake at serving conditions, destroyed conditions and reinforced conditions, many valuable results of structures such as moment - curvature hysteretic loops of dougong structure and tenon - mortise joints under low cyckc reversed loadings, the static function, the seismic performance, energy dissipation, vibration reduction, energy - loss mechanism, nechanicalmode and failure mode were studied. aplenty of valuable parameters of the structure system were obtained, such as the natural period of structure, vibration modes, damping ratio, factor of vibration isolation, oscillate amplitude of ineitial accebration, velocity and displacement, magnitude of slippage, and the mechanism of structure failure and collapse etc. based on these research, the complete analysis of ancient timber structure under earthquake were carried out in which including mechanism analysis method, calculating mode, strength analysis of members and joints, strengthening methods for serving damaged ancient timber structure buildings were also taken into account

依照宋代《營造法式》建造了抬梁式殿堂木結構構件及結構模型，對中國古代木結構中的典型構造如：柱腳在礎石頂面平擱簡支、柱架榫卯連接、柱高不越間之廣、側腳、生起、斗拱等的構造機理及結構功能進行了量化分析和實驗研究： （一）通過木柱石礎靜摩擦試驗，測定了柱腳與石礎古鏡面間的摩擦系數及摩擦力隨上部結構荷載變化的規律； （二）通過單柱承載力試驗，測定了古建築中木柱的受力變形特徵、破壞模式、及模型材料的變形模量、極限承載力、極限變形等參量； （三）通過柱架低周反復荷載試驗，測定了柱架的抗側移剛度、柱架恢復力特性及滯回曲線、榫卯張角剛度及其變化規律、柱架及榫卯的極限承載力和極限變形、及榫卯減振參數； （四）通過斗?低周反復荷載試驗和受壓試驗，測定了古建築木構件與木構件間摩擦系數，斗?抗側移剛度，斗?恢復力特性及滯回曲線，斗?抗壓極限承載力及受力變形規律； （五）通過抬梁式殿堂間架模型振動臺試驗，測定了殿堂木構架結構自振周期，地震反應振形、阻尼特性及阻尼比；按結構分層特點對柱腳、柱頭和斗?層上的屋蓋的地震反應採用多點同步測量，對柱根滑移、榫卯變形、斗?的變形、復位、耗能減振參數等進行了定量分析。

As the temperatures increase through different ranges, the flakes will form as flat hexagonal plates, followed by hollow columns, needles, and then back to lacy hexagons between 25 f and 32 f

當溫度通過不同的范圍上升時，雪花將會形成平面六角板，其次是空心柱和針頭狀，然後在25 ? 32度之間又會變回花邊六面體。

General rules were validated and a new rule was discovered : i. e. the shape 0f these two stress fields are same, the equivalent stress of the round corner in the bottom reached its maximum at the first phase, the equivalent stress of the edge of hole reached its maximum at the third phase, the equivalent stress of flanging with cone - shaped punch descend more than that with column - shaped punch at the fourth phase i. e. the phase of deformation completed

驗證了一般規律，也發現了新規律，即兩者的應力場形狀相同，底部圓角處等效應力在變形第1階段最大，孔口邊緣處等效應力最大出現在變形第3階段，第4階段（變形終了時）錐形沖頭翻邊的等效應力比柱形沖頭翻邊時下降更大。

Hexalobular socket head cap screws

內六角花形圓柱頭螺釘