本文阐述变截面开口薄壁杆件的有限分析法。
Pnesents the finite analytic method of the open Thin-walled bars with variable section.
本方法适用于任意形式截面的薄壁杆件分析。
The present method is suitable for any shape of cross section thin-walled members.
本文研究的是一种特殊的薄壁结构——薄壁杆件结构。
In this paper the research on thin-walled structure is onetype of particular thin-walled structure -the thin-walled bar structure.
薄壁杆件的截面变形是经典薄壁杆件理论无法描述的。
Classical thin-walled beam theory can not handle sectional deformation.
本方法适用于任意横截面形状和任意边界条件的薄壁杆件。
The proposed method is applicable for the thin-walled member of any cross section with any boundary condition.
根据位移变分原理，建立有限杆元模型，对薄壁杆进行侧向稳定分析。
The present study is focused on establishing a finite member element model, based on energ.
根据位移变分原理，本文提出一种纯压或纯弯薄壁杆件稳定分析的新单元。
Based on the displacement variational principle, a new element is developed for buckling analysis of thin-walled members with shear lag effect in the present paper.
本文并简述了复室混合截面薄壁杆件和复室闭合截面薄壁杆件扭转计算的异同。
This paper narrates simply the similarities and differences of the calculation between the torsion oft…
本文根据开口薄壁杆件稳定性的一般理论导出了舱壁扶强材的侧向稳定性方程序。
Basing upon the general buckling theory of bars with thin-walled open sections, the lateral buckling equation of bulkhead stiffeners is derived in this paper.
根据势能驻值原理 ，提出在横向荷载作用下薄壁杆件稳定分析的样条有限杆元法。
The displacement variational principle was used to develop the spline finite member element method for buckling analysis of thin walled members with shear lag effect.
从而突破了弯心不共线薄壁杆件体系计算困难的问题，显示了这种计算方法的优越性。
Some difficulties in calculation of thin-walled structures with "plane bending theory" and "constrict twist theory" are overcome, showing the advantages of this method.
针对钢筋砼箱形截面桁梁桥的侧倾稳定性分析，提出一种基于薄壁杆件理论的新型超级单元。
In this paper, a new type of super_element based on the thin_walled bars theory is presented for the lateral stability analysis of the reinforced concrete truss_beam bridge with a box_section.
将有限元与薄壁杆件弯扭理论两种计算方法进行了分析对比，提出了模型化及边界处理的方法。
This paper carries out the comparison between FEM and the theory of thin-walled bar's bending and torsion and gives the methods for modelling and boundary processing.
本文论证了开口薄壁杆件在斜弯曲情况下，不仅产生两向弯曲变形，而且伴随着扭转变形的发生。
An open thin-walled membed subjected to skew-bending not only produces the bending deformations in two principle directions, but causes torsion as well.
本文的主要目的是探讨在需要考虑几何非线性的情况下，开口薄壁杆件结构的地震反应时程分析。
The purpose of this thesis is to explore the geometric nonlinear seismic response time integration of open thin-walled frame structures.
本文通过算例对广义梁理论和薄壁杆件翘曲理论进行了比较研究，并指出了后者的贡献和局限性。
By an example, the warping theory of the thin-walled beam is compared with and distinguished from GBT, while the contribution and the defect of the former is presented.
本文将开口和闭口薄壁理论统一在乌曼斯基假设之下，建立开口和闭口薄壁杆件统一的基本微分方程序。
In this paper, on the base of Ullmanski's hypothesis, the unified beam theory of thin walled open and closed cross-section and the governing differential equations are established.
本文根据汽车车架结构的特点，应用薄壁杆系有限单元法，对汽车车架的固有频率和主振型进行了计算。
This paper gave the computer simulation of natural frequencies and vibrational modes of truck frames, based on the structural features of the frame, by finite element method of thin wall rod system.
对钢与混凝土组合梁扭转进行了探讨，提出了以开口薄壁杆件的约束扭转理论为基础的扭转极限分析方法。
The torsion of composite beams of steel and concrete and the limit analysis based on the theory of twisted members with thin walled open section and restraint of warping are discussed.
本方法采用线性函数作为横截面翘曲位移的插值函数，适用于任意横截面形状和任意边界条件的薄壁杆件。
A linear function is used to express the warping displacements along the cross section of the thin-walled member.
基于乌曼斯基薄壁杆件约束扭转理论，利用刚性周边假定建立了闭口薄壁杆件约束扭转分析的一维离散有限元方法。
Taking the effects of geometrical nonlinearity into account, a general theory of composite thin walled bar is established under the combinational deformation of tension, compression and torsion.
提出一种简单而有足够精度的方法，以探讨开口薄壁杆件中由杆壁中面上的剪应变引起的剪力滞后现象对其侧向稳定的影响。
The effect of shearing lag on lateral stability of thin-walled open member is studied by a simple method with sufficient accuracy.
就国内现有的薄壁钢梁弯扭失稳理论进行了分析，从薄壁杆件的一般理论出发，推导出荷载过截面弯心并与主轴平行的受弯钢梁的临界弯矩公式。
On the base of the general theory of thin-walled members, we deduce a new critical moment formula of steel beam under transverse loads which pass the shear center and parallel to the main axis.
研究任意开口薄壁截面杆的剪力流和弯曲中心坐标的计算问题，利用合力矩定理导出计算公式，给出算例。
This paper examines the shearing flow of any thin-walled beam with open section and the calculation of the coordinates of bending center.
在有限元空间梁元模型的基础上，导出了考虑杆件约束扭转的薄壁梁元分析力学模型。
Based on the space beam element analytical model, a new thin-walled beam element model considering the restrained torsion was derived in this paper.
对薄壁扭杆设计时还考虑了扭转失稳问题，这样就使设计更为安全可靠。
The twist instability has been also considered in the design for thin wall tube. Thus, this design is safety and more reliable.
讨论受内压椭圆封闭薄壁截面杆的小变形动力学性质。
Dynamic property of small deformation of thin walled elliptical bar under pressure was studied.
利用有限元法对飞机闭合薄壁剖面杆结构进行刚度计算，其结果与全尺寸试验值吻合较好。
The rigidity calculation of the closed thin - walled section rod structure of aircraft is carried out by using finite element method and the result tallies with the full - scale test value well.
在此基础上，把薄壁钢管纵向单元作为支承在弹性地基上的压杆，推导出钢管出现局部屈曲的临界应力和临界径厚比。
An axially compressive thin-walled steel element on elastic foundation is adopted to deduce the critical stress and critical diameter to thickness ratio for circular steel tube in local buckling.
它与三节点等参轴力杆单元组合时可以精确地模拟薄壁结构中杆与蒙皮之间的剪流作用。
Combining with three nodes isoparametric axial force element, the new element can be used to accurately calculate the shear flow action between bar and skin in thin-wall structure.
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