屈曲模態 的英文怎麼說
中文拼音 [qūqūmótài]
屈曲模態
英文
buckling mode-
The study of the effect of material properties and dimensions and loading currents on liner buckling, using a capacitor bank as a driver, indicates that the mode number for buckling increases with the ratio of radius to thickness of a liner, and the yield strength to plastic hardening modulus, but keeps invariable with the increase of loading current, and that the magnitude of buckling increases with the loading current
用電容器組脈沖發生器裝置作為驅動源,設計4種不同材料、不同尺寸的金屬套簡,通過調節電容器組的充電電壓得到不同的加載電流,研究材料及幾何參數、加載脈沖特性對套簡屈曲的影響;採用瞬態非線性有限元方法對實驗結果進行了數值模擬。Pole, thin plate, thin shell in the electromagnetic elastic system, etc. when there is no machinery to restrain, the system has an unstable movement mode at least, and while exists restrain, after up to a certain critical value in electric current or the magnetic fielding, buckling must take place in the system
電磁彈性系統中的桿、薄板、薄殼等,當沒有機械約束時,系統至少存在一個不穩定的運動模態,而存在約束時,當電流或磁場達到某一臨界值后,系統將發生屈曲。With the different loading ratio of parallel to axis and normal to axis direction, damage defects will occur bulking problem. by varying the degree of material anisotropy relative to the loading axis such as poisson ' s ratio and shear modulus, crack growth bulking strain value parallel to or normal to the loading axis is different. the parameters controlling the growth or arrest of the delamination damage are identified as the geometry and the depth of defects and radius of cylindrical etc. at last, it was investigated that the delamination damage is often induced by the tip of matrix damage under higher stress
研究結果表明:殼體筒段受軸向拉伸和內壓載荷作用時,軸向和環向載荷的比率不同,母層和子層可能發生拉伸屈曲,也可能發生收縮屈曲,或者同時發生拉伸和壓縮屈曲;母層與子層各向異性存在差異,即泊松比與剪切模量不匹配時,將使子層板的邊界上承受壓縮和剪切作用,當分層達到臨界狀態則發生屈曲,當母層與子層的各向異性差異越大,則發生分層屈曲的可能性越大;分層損傷的屈曲應變值與子層自身的彈性模量、分層子層的形狀、厚度以及圓柱半徑等因素有關。Analyzed with the developed software, the stress and deformation distributions of f320 derrick and j250 / 42 - k derrick under several working conditions are obtained. the results obtained here are consistent with tha t obtained with supersap93, which illustrates the program is correct and practicable. finally a fem pre - processor and post processor is developed
本論文用編制的程序分析了f320型和jj250 / 42 - k型石油鉆機井架在幾種工況下的應力、變形分佈,及兩種井架的固有模態、屈曲模態和可靠性,所得結果與supersap93的計算結果比較,應力和位移誤差均相差很小,說明本程序系統是正確可行的。According to three dimension braided composites for braided technology - four - step and technology - two - step procedure, and with reference to theories of braided fabric geometry and force models, a geometric model is built. in this model, the cross - section of thread is described as a circle and thread path as a cubic b - spline. braided - fabric structures in three dimensions are displayed by using solid - modeling techniques
本文三維編織物根據四步法和二步法編織工藝,從紗線的力學模型出發,建立了以圓形近似描述紗線的截面形態,以三次b樣條曲線近似描述紗線的屈曲形態的織物空間幾何模型,利用計算機三維實體造型技術,分別建立各自的編織物實體模型,用來模擬織物內部各紗線的空間位置,完成織物結構模擬。( 2 ) the finite element program ansys is used to analyze the elastic buckling of rectangular tube, consequently the buckling load pcr and the simulating formula for the restraint coefficient &, is obtained. the results derived from the program are compared with the british standard and china standard
( 2 )採用有限元程序ansys對矩形鋼管板組進行了彈性屈曲分析,得出其臨界荷載p _ ( cr ) ,彈性屈曲模態與解析法所作假設相符,並擬合出均勻受壓下的矩形鋼管約束系數k _ 1的公式,並與英國規范和我國規范進行比較。Using the nonlinear methods of the ansys procedure, the stability of the gallery of pudong international airport in the second phase under several different load combinations is analyzed, and load factors, buckling modes, buckling characters and other different factors are obtained
利用ansys程序的非線性分析功能對上海浦東機場二期工程中的候機長廊結構進行了多種荷載組合下的穩定性分析,得到各組合下的屈曲荷載因子、屈曲特徵、屈曲模態及不同因素的影響。The fem analysis was carried out for many practical frames where both the axial forces and the stiffnesses of members were varied story - by - story
而後研究了支撐剛度變化對框架屈曲模態及各階模態對應的屈曲荷載的影響。Moreover, the detailed calculation and contrastive analysis are carried out by using the software ansys. theoretical calculation and testing results show that adopting the connection construction with a hole on the web can alleviate the stress state greatly and transform the failure mode of the connection from brittle fracture to local buckling damage on beam, reduces the possibility of brittle fracture by welding and improve the ductility performance of connection to a great extent
結果表明,採用腹板開孔的節點形式,可以使梁的塑性鉸位置由梁根部向中部偏移,達到了有效控制塑性鉸位置的目的;同時,採用這種節點構造可以改變節點附近的梁截面應力分佈狀態,降低了節點脆性破壞的可能性,使節點的破壞模式從脆性破壞轉變為梁的局部屈曲破壞,很大程度上改善了結構的延性。分享友人