Program model research of spline finite strip method based on multi - agent 的樣條有限條法的程序模型研究
Finite strip method 有限條法
Improved finite strip method of overall stability and second - order displacement analysis on tall tubular structures 高層筒體結構整體穩(wěn)定及二階位移分析的改進條元法
So , it takes both advantages of spline finite strip method with less node displacement and that of plastic hinge method with convince of getting plastic elemental stiffness matrix 因此該方法兼具二者優(yōu)點:樣條有限條法的位移量少和塑性鉸法形成塑性剛度矩陣的便利。
A program finite strip analysis model is formed and finite strip computer software is also made in this paper . the buckling behaviors of plates with flat - hat intermediate stiffener are analyzed by employing finite strip method 論文建立了有限條法分析模型,編制了有限條計算程序,用有限條法分析了帽形中間加勁板件的屈曲和帽形肋條的加勁性能。
By combining the displacement function of two - end fastened strip in finite strip method ( fsm ) with that of rectangular element in finite element method ( fem ) , the compound finite strip - element method is used to solve plane problems with mechanics of elasticity 摘要將有限條帶法( fsm )中兩端固定條和有限單元法( fem )中矩形單元的位移函數(shù)相迭加,運用混合條元法來求解平面彈性力學問題。
This paper try to mix the finite strip method and hybrid stress element , and deduce a numerical and computer method which combines the advantages of the two methods - mixed hybrid finite strip method ; analyze the intensity and stability of the orthotropic plate by this method ; deduce the formula of the orthotropic plate ' s analysis and calculation under this method ; compile the program of orthotropic plate ' s mixed hybrid finite strip method ( hfsop . for ) with fortran - 77 language , and perform them under fortran90 environment of pc computer ; comparing with traditional methods by example of computing , prove that the mixed hybrid finite strip method have better degree of accuracy , moderating the stiffness of plate , coming more close to actual conditions , avoiding over - hard or over - soft ; finally , this paper analyze the stability of a orthotropic plate by this method , and deduce the - value of critical stress 論文將有限條法和應力雜交元法兩者結合起來,導出一種兼有兩者優(yōu)點的數(shù)值計算方法? ?混合雜交有限條法。運用這種方法對正交異性板的強度和穩(wěn)定進行了分析,推導出正交異性板在這種方法下的分析計算公式,用fortran - 77語言編寫正交異性板混合雜交有限條法程序( hfsop . for )在微機fortran90環(huán)境下運行。通過算例與傳統(tǒng)的方法比較,驗證混合雜交有限條法有更好的精度,使板的剛度適中,更接近實際情況,避免“過硬”或“過軟” ;最后,論文還用此方法對一正交異性板進行了穩(wěn)定分析,得出臨界應力值。
The elastic foundation model is considered as two - parameter elastic foundation model and its effect to moderate - thick plates are taken into account by a set of governing differential equations . united with hu hai - chang ’ s function , least squares collocation weighted residual method which uses b - spline function as trial function is put forward for solving the bending problems . compare with the results of finite element method of lines , spline finite strip method , accurate solution of series etc . it is proved that the method in this article has adequate accuracy and practical feasibility 本文采用瑞斯納中厚板理論求解彈性地基板,建立雙參數(shù)地基與中厚板相互作用的控制微分方程,結合胡海昌的解耦函數(shù),運用雙五次b樣條函數(shù)作為試函數(shù)的離散型最小二乘加權殘值法分析了雙參數(shù)地基上的中厚板的彎曲問題,并將結果與有限元線法、有限條法、級數(shù)精確解等進行比較,證明本文方法具有足夠的精確性與實際的可行性。
In this paper , a generalized hybrid finite strip method is deduded for analyzing the shear lag effect in box girders . it has the advantage of the generalized finite strip method and hybrid stress element . shear lag effect in thin - walled box girder is analyzed with this method and stiffness matrix of generalized hybrid finite strip element is deduced . a calculating program for thin - walled box girder " s generalized hybrid finite strip method is compiled with fortran language and performed in visual fortran environment of pc computer . a typical example demonstrates that the proposed method has higher accuracy and efficiency , is suitable for analysis of shear lag effect in box girders 本文結合應力雜交元法和廣義有限條法導出一種用來分析箱梁剪力滯效應的廣義應力雜交有限條法,它兼有應力雜交元和有限條法的優(yōu)點。運用這種方法對薄壁箱形梁的剪力滯效應進行了分析,推導出廣義應力雜交有限條元的單元剛度矩陣,用fortran - 77語言編寫薄壁箱形梁廣義雜交有限條法程序( hfsbg . for )在visualfortran環(huán)境下運行。具體算例的數(shù)值結果表明:廣義應力雜交有限條法用于計算箱形梁的應力分析具有很好的精度和效率,適合于分析箱形梁的剪力滯效應。
Generally , the skew bridge ' s calculation theories can be divided into three types : the category 1 is the plank theories method , such as the finite difference method , the finite element method and the finite strip method , etc ; the category 2 is the beam theories , such as the grid beam theories , the general grid theories , the rigid cross - beam method , the elastically - supported continuous beam method and the bar system analytical method , etc ; the category 3 is the practical method , such as the g - m revising method , the grid - beam simple method and ghali form coefficient method , etc 目前關于斜梁橋的計算理論和方法概括起來,大致可以分為三類:第一類為板理論方法,如有限差分法、變分法、有限單元法、有限條法等;第二類為梁理論法,如格構梁理論、一般格構理論、剛性橫梁法、彈性支承連續(xù)法、桿件結構的分析方法;第三類為實用計算法,荷載橫向分布的計算方法如g ? m修正法、格構梁的簡易法、 ghali表格系數(shù)法等。
百科解釋
The finite strip method is a technique of structural analysis used for bridge and tall structure design as well and in the design of construction components such as steel beams. The technique was first introduced in 1968 and is less powerful and versatile than the finite element method but is more efficient in terms of computation power in some situations.