塑性壓曲 的英文怎麼說
中文拼音 [sùxìngyāqū]
塑性壓曲
英文
plastic buckling-
The machine is applicable to the plasticity material to inhibit the craft, such as hurtles to press, curve, turn over the side, lamella to pull to stretch etc. craft, also can used for correct, pressing to pack, the emery wheel model, the cold crowded metals spare parts model, the plastics product and the powder product of inhibit and model craft
本機器適用於可塑性材料的壓制工藝,如沖壓、彎曲、翻邊、薄板拉伸等工藝,也可用於校正、壓裝、砂輪成型,冷擠金屬零件成型、塑料製品及粉末製品的壓製成型工藝。Pressure that this series the machine still have the extensive and in general use, be applicable to the every kind of plastic to process with take shape, if wash to press, squeeze, flection, fold the side, rivet jointing, orthopedics etc. ; stalk the pressing of set spare parts pack ; the plastics and what powder product inhibits ; stalk with other is similar to the correcting of spare parts ; the pressing of zero parts packs, and the pulling of spare parts of small scaled plank form stretch, type, fall material, press to print various uses of etc
本系列機器還具有廣泛的通用性,適用於各種塑性材料的壓力加工和成形,如沖壓、擠壓、彎曲、折邊、鉚接、整形等;軸套類零件的壓裝;塑料及粉末製品的壓制;軸類和其他類似零件的校正;零部件的壓裝,小型板形零件的拉伸、成型、落料、壓印等多種用途。The influence of such parameters as axial load index, aspect ratio and percentages of lateral reinforcement, on seismic performance of reinforced concrete frame column in hong kong and analyses the distribution relationships of flexural deformation, shear deformation and slippage of longitudinal reinforcement in joint zone
根據試驗結果,討論了軸壓比、配箍率、剪跨比等參數對其抗震性能的影響,分析了水平荷載作用時塑性鉸區的彎曲變形、剪切變形和縱向鋼筋粘結滑移變形所產生的位移在框架柱總水平側移中所佔的比例及其變化規律。Results showed that the ductility of bolt spjice is much better than welds, weaker splice joints develop larger plastic deformation, slipping between faying surfaces, bearing of bolts to hole surfaces and buckling of splicing plates are all ideal energy dissipation mechanism
試驗結果表明:螺栓拼接節點的延性遠好於樑柱焊縫連接;較弱的拼接節點產生較大的塑性變形;接觸面的滑移、螺栓與孔壁的擠壓和翼緣拼接板的屈曲都具有良好的耗能能力。During the temperature fields, the results indicate that the processing parameters such as the extrusion velocity, casting temperature, perform preheating temperature, die preheating temperature and so on are important for the temperature fields besides the dwell time. they are must be in concordance each other to the deforming zone is in the quasi - solid state, and the stable semi - solid extrusion is implemented. during the deforming fields, the hyperbolic sine thermo - rigid - viscoplastic fem model is selected according to the forming feature of the process, and the variations of the stress - strain fields are studied
在溫度場的模擬中,模擬結果表明,保壓時間是影響製件成形質量的關鍵因素之一,擠壓速度、液態金屬澆注溫度、預制體預熱溫度和模具預熱溫度等工藝參數對溫度場的影響也很大,需進行參數之間的協調,只有當變形區內部始終維持準固態時,才能實現穩定的液-固擠壓成形過程;在變形場的模擬中,根據液態浸滲擠壓的成形特徵,選用了雙曲正弦剛-粘塑性有限元計算模型,研究了變形過程中應力應變場的變化規律,研究了模角對變形和金屬流動的影響及變形力的變化過程和其影響因素。The thesis had done the theories analysis in detail and built the relevant mathematics models aiming at the mechanics characteristic about the lodging of stalk, the elastic and plastic deform of stalk under the action of the transverse loads, the mechanics condition which causes stalk pushed, the relation between the speed of unit and the surface radius of ski, the relevant location between the thickness of the compressed stalk and action location of load, the relevant location between the mating device and plough, the coefficient of overturning soil under the thickness of the compressed stalk and so on. in addition, the computer aided analysis and simulating experiments in field were acted by choice
本文對秸稈自倒伏力學特性;橫向載荷作用下的莖稈彈塑性變形與秸稈被推倒的力學條件;機組作業速度與滑撬曲面半徑的關系;秸稈壓實厚度與加載作用點的相對位置;配套裝置與犁體相對位置;秸稈壓實厚度下的翻垡系數等,進行了較詳細的理論分析並建立了相關數學模型。在此基礎上,本項研究還選擇性地進行了計算機輔助分析和田間模擬試驗。A fem of elasto - plastic flexural - torsional buckling of steel members under cyclic loading
循環荷載下壓彎鋼構件彈塑性彎扭屈曲的有限單元法Aiming at the shortages and demerits in the study of constitutive relationship of concrete based on elastic - plastic mechanics, damage expressions of concrete subjected to uniaxial tension - compression was deduced based on damage mechanics, and general damage evolution equation of concrete in bending state was received also
摘要針對彈塑性力學研究混凝土本構問題帶來的不足和缺陷,運用損傷力學的方法,導出混凝土在單軸拉、壓狀態下的損傷表達式,得到了混凝土在彎曲狀態下的統一的損傷演化方程。The sedimentation compression lines, intrinsic compression lines can be normalized by a void index, then the difference of the structural clays and reconstituted clays are showed
天然粘土的沉積壓縮曲線、重塑土的壓縮曲線可以用孔隙指數來歸一化,它清晰地顯示出結構性土和重塑土的內在差別。The critical crack and stress put forward provides theoretic foundation for monitoring portal machine. 3. applying steady theory of board, studying the problem of early curvature, flexibility model, welding remaining stress, elastic transmutation and brace condition and so on, conclude that structure of beam is primary place where metal structure of portal crane lose stabilization and the break of main beam is result of losing partial stabilization of main board
文章提出的界限應力和臨界裂紋對于港口機械的監測提供了理論依據; 3 、運用板的穩定理論,探索了作為薄壁構件的門機金屬結構在失穩破壞中所涉及到的初曲率問題、彈性模量問題、焊接殘余應力問題、彈塑性變形問題以及支承條件問題等,得出了門機金屬結構發生失穩破壞的主要部位為臂架結構,且主臂架的折斷是由於受壓翼板局部失穩引起整體破壞; 4 、探討了焊接對結構承載的影響。Effects of tramadol on synaptic remodeling in the rat spinal cord after chronic constriction injury of sciatic nerve
曲馬多對慢性壓迫性坐骨神經損傷模型大鼠脊髓突觸重塑的影響Then, this paper edits other computer program to calculate thirty sgrc frame columns, and researches the drift capacity of sgrc frame column, and analysis the turning capacity of frame column " s plastic hinge. then the relational expression of the curvature ductility factor and ratio of hoops of sgrc frame columns is derived. this paper analysis the relation of the curvature ductility factor and the relative drift of sgrc frame columns, and discuss the question of the minimum values of ratios of hoops of sgrc frame column at different axial load ratios
一11一太原理工大學碩_ i :學位論文使用本文程序另外模擬計算了30榻煤研石混凝土框架,進一步分析了軸壓比和配箍率對煤研石混凝土框架柱曲率延性的影響,編寫程序計算了30根煤研石混凝土框架柱,對煤研石混凝土框架柱的側向變形能力進行了研究,分析了柱塑性鉸的轉動能力,導出了煤研石混凝土框架柱的曲率延性系數與配箍率的關系式,分析了煤研石混凝土框架柱的曲率延性系數與框架柱相對側向位移的關系,討論了煤研石混凝土框架柱在不同軸壓比下最小配箍率的取值問題。The sedimentation compression lines of natural clays, intrinsic compression lines of reconstituted clays and oedometer compression curves can be normalized by a void index, then the difference of the structural clays and reconstituted clays as well as the gradual damage course of soil structure are showed apparently
用孔隙指數來歸一化天然粘土的沉積壓縮曲線、重塑土的壓縮曲線和固結儀壓縮曲線,可以很清晰地揭示出結構性土與重塑土的內在差別、固結儀試驗中土體結構性的漸進破壞過程。Then, a step - by - step increase of vertical curvature is applied to the hull girder assuming that the plane cross section remains plane. at each incremental step, the stress of the cross section is evaluated using the average stress - strain curves of the elements as well as the incremental bending moment due to the curvature increment. performing sample calculations on existing girder models tests under pure bending, the rationality of the proposed method was examined
假設船體橫向框架材足夠強,因而板架的整體破壞不會發生;基於梁?柱理論、理想彈塑性假設、平面假設,建立了拉伸和壓縮加筋板單元的平均應力?應變關系曲線,應用船體結構總縱極限強度的簡化逐步破壞分析方法計算船體總縱極限彎矩,並據此開發了計算程序sus 。Local buckling capacity of steel composite beam subjected to combined bending, shear and patch loading is one of key problem in steel structures design. the computational formula for local stability of web was based on the assumption of infinite - elastic perfect plates in the steel structures design code ( gbj17 - 88 ). but in the revised code ( gb50017 - 2003 ), this formula was made big change with reference to british code ( bs5950, partl ) and australian code ( as4100 ), the related research result of our country was included as well. in the modified formula, influence of early geometric imperfection and elastic - plastic buckling stage were considered, which is compatible with both actual circumstance of engineering and the strength formula of beams under bending stresses ( considering partial plasticity of the section ). in this paper, the preceding problem is deeply analyzed and studied, considering the effects of various geometric parameters and stress combinations on buckling critical stress of web, the revised local buckling correlative formula for transverse and longituded stiffened web panels under combined stresses is analyzed and verified by finite element method
組合鋼梁腹板在彎、剪及局壓復合應力作用下的局部屈曲承載能力是鋼結構設計中需考慮的問題,新的《鋼結構設計規范》 ( gb50017 ? 2003 )對此部分內容作了較大改動,原規范中關于腹板局部穩定的計算公式是基於無限彈性的完善板假定;新的規范則參考了英國規范( bs5950 part1 )及澳大利亞規范( as4100 )並結合我國相關研究成果,考慮了屈曲進入彈塑性階段以及初始幾何缺陷的影響。這不僅與工程實際情況相符,而且也與鋼梁在彎曲應力作用下允許截面部分進入塑性的計算公式相協調。Hardness solution form for elastic - plastic material considering the indenter tip curvature effect
考慮壓頭尖端曲率的彈塑性材料硬度的解答形式The results indicate that stress - strain curves with different water contents, consolidation stresses and stress paths are evidently dissimilar, which are correspondingly described with softening elastic - plastic model, ideal elastic - plastic model and hyperbolic elastic model
研究表明,原狀黃土含水量不同、固結圍壓不同、應力路徑不同、應力應變曲線亦顯著不同,可以由軟化彈塑性模型、理想彈塑性模型或雙曲線彈性模型描述。The effects of external pressure on elastic - plastic dynamic buckling of ring - stiffened cylindrical
外壓對環肋圓柱殼軸向彈塑性動力屈曲的影響Four - cloumn universal hydraulie press is used in pressing technology of plastic materials, such as click folding turn up. seretching of sheet metal and canbe also used in correetion pressed install, forming of grinding wheel and cold - coining metal fittings and forming technology of poastic and powder prodects
四拄式萬能液壓機適用於塑性材料的壓制工藝,如沖載、彎曲、翻邊、薄板拉伸等,也可以從事于校正、壓裝、砂輪成型,冷擠金屬零件成型,塑料製品及粉末製品壓製成型工藝。3. the action of main affected factors, such as axial force, shear - span ratio, transverse reinforcement amount and so on, are described in detail to study the shear behavior and mechanism of columns under cyclic load. 4. the shear contribution of concrete and transverse reinforcement as to the increasing of columns * displacement ductility level is also investigated
詳細地分析了位移延性、循環次數以及剪跨比、軸壓比及配箍特徵值等因素對框架柱構件骨架曲線、荷載退化曲線、剛度退化曲線及構件滯回性能等的影響,得出了反復荷載下框架柱塑性鉸區域剪切受力性能的眾多試驗研究結果。分享友人