pressure vessel head 中文意思是什麼
pressure vessel head
解釋
壓力殼頂蓋-
The cause that causes cerebral blood - vessel block basically has two kinds : it is a head thrombosis, it is the pathological changes as a result of cerebral blood - vessel itself, often make the film inside tubal antrum coarse because of sclerosis of appearance of cerebral artery congee, be in charge of antrum stricture, below certain condition, if blood pressure is reduced, blood stream is slow, blood sticks consistency heighten, the cruor factor such as plaque, condense inside blood - vessel agglomerate, form cerebral thrombus
引起腦血管阻塞的原因主要有兩種：一是腦血栓形成，它是由於腦血管本身的病變，常因腦動脈粥樣硬化使管腔內膜粗糙，管腔狹窄，在某些條件下，如血壓降低，血流緩慢，血液粘稠度增高，血小板等凝血因子，在血管內凝聚成塊，形成腦血栓。 -
On the base of the basic structure study of the tooth - locked quick closure vessel of middle and low pressure with crown head, the optimization method of parameterized whole device is presented in this paper, the emphases of research is put on optimization of the tooth - locked quick closure device whose structure and load distribution is complicated, the wall of vessel, however, is designed according to the existing strength formula
本文對帶有球冠形封頭的中、低壓齒嚙式快開容器的基本結構進行研究的基礎上，提出了齒嚙式快開容器的參數化整體優化方法，研究重點放在結構和受力復雜的齒嚙式快開裝置的優化，對于容器簡體壁厚仍採用現有強度公式設計。 -
Linear adjustment of the head of a spiral wound thick - wall pressure vessel
螺旋纏繞厚壁壓力容器封頭段的線型調整 -
Author thinks that the direction of the maximum plastic distortion along a constant radius around the crack tip may be considered as the direction of shear - mode fracture ( named pmax - criterion ) and the load when located shear band prongs the ligament in the front of crack tip is regarded as the limited load of shear - mode fracture. ( 3 ) the fad ( fracture assessment diagram ) of titled crack is proposed based on achievements of mesomechanics about i - ii complex ductile fracture of metal, and the titled crack is classified two kinds : void - mode fracture is assessed by fracture assessment curve, and shear - mode fracture by limited load. ( 4 ) using a fe program based on plantle - ressue theory to calculate some mesomechanical parameters, a flange joint structure of a high pressure vessel ( design pressure 31. 4mpa and the thickness of the hemispherical head is half of that of shell. ) is analyzed to determine whether the structure under operation pressure is safe or not, forecast the mode of potential invalidation and argue for the rationality of design of the structure
試件的整體斷裂為剪切型，但在試件芯部裂尖鈍化區中部出現了韌窩型啟裂並有一定的擴展，說明局部較高的應力三軸度也會使韌窩型機制得以發展，但是不改變試件整體的剪切型斷裂模式；對韌性斷裂的剪切模式的細觀機理做了一定的探討，並且提出了含裂紋構件剪切型斷裂的宏觀判據：認為裂紋前方的集中剪切帶中與裂紋尖端等半徑處最大有效塑性應變出現的方向可以作為裂紋剪切斷裂的方向（可簡稱為_ （ pmax ）準則） ，集中剪切滑移帶貫穿裂紋前方承載韌帶時的載荷可以作為極限載荷；本文運用金屬韌性斷裂細觀力學在一復合型韌性斷裂方面的研究成果，採用失效評定圖的形式，提出了傾斜裂紋的安全性評定方法的基本框架。 -
Formed head for pressure vessel
壓力容器封頭
分享友人