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阶跃荷载
相关语句
  step load
     Dynamic Stability of Single Layer Reticulated Dome Under Step Load
     球面网壳阶跃荷载作用动力稳定性
短句来源
     Two fitting formulas of the ratio between dynamic critical load and static critical load of spherical shell subjected vertical step load are presented in this paper.
     通过大量算例分析,发现了在竖向阶跃荷载下单层球壳的动力失稳临界荷载PDCR与静力失稳临界荷载PSCR之间所具有的良好的规律性关系,最终给出了关于PDCR/PSCR的两个拟合公式。
短句来源
     Effects of Initial Imperfection and Initial Static Displacement on Dynamic Stabi lity of Single Layer Reticulated Domes Subjected to Vertical Step Load
     竖向阶跃荷载下初始缺陷及初始静位移对单层球壳动力稳定性的影响
短句来源
     DYNAMIC CRITICAL LOAD OF SINGLE LAYER SPHERICAL SHELL SUBJECTED TO VERTICAL STEP LOAD
     竖向阶跃荷载下单层球壳动力失稳临界荷载的确定
短句来源
     Based on the comprehensive numerical analysis of single layer reticulated domes subjected to vertical step load,the effects of initial imperfection and initial static displacement on dynamic stability behavior are presented.
     根据大量算例的计算结果 ,分析了在竖向阶跃荷载作用下 ,跨度为 40~ 70m、矢跨比为 1 / 8~ 1 / 5的单层球面网壳的初始缺陷和初始静位移对其动力稳定性的影响。
短句来源
  step loads
     Based on analysis of dynamic behavior of single-layer spherical shells subjected to harmonic loads with different frequencies and step loads with different duration, and under different site conditions and earthquake waves with different platform, the relationships between structural response and frequency characteristic, as well as the excitation duration are built up, by which the most unfavorable loads of single-layer spherical shells are obtained.
     通过对不同频率简谐荷载、不同持时阶跃荷载、场地卓越周期及地震波平台段持时的研究,建立起结构动力响应与结构自振特性以及荷载频谱特性之间的关系,明确了何种条件下的荷载为结构最不利荷载。
短句来源
     (2) Under either horizontal or vertical step loads, when the duration is closed to the half natural period of the largest mode participation coefficient in the direction of the load, the dynamic structural response is the strongest, and the limit load is the lowest.
     无论水平还是竖向阶跃荷载,当荷载持时为荷载作用方向最大振型参与系数所对应的固有周期的1/2时,结构的动力响应最强烈,所对应的极限荷载最低,为结构的最不利荷载;
短句来源
     On the other hand, when the structure is subjected to step loads, the amount of plastic members is larger, the strength failure is easier to happen and the lowest limit load is generally relative to strength failure.
     在阶跃荷载下,塑性杆件愈多,结构愈易发生强度破坏,最小极限荷载一般对应强度破坏;
短句来源
     In this paper,non-linear dynamic responses of single-layer spherical shells subjected to harmonic loads and step loads are analyzed,in which both the geometric non-linearity and the material non-linearity are all taken into account.
     本文同时考虑了几何非线性与材料非线性,对单层球面网壳结构在简谐荷载、阶跃荷载作用下进行了动力响应分析。
短句来源
  sudden load
     Study on dynamic collapse of single-layer reticulated domes under sudden load
     阶跃荷载作用下单层球面网壳动力破坏研究
短句来源
     Dynamic stability of double-layer reticular prestressed latticed shell under earthquake action,sudden load and harmonic load is discussed withdiferent parameter.
     在分析双层球面预应力网壳结构在水平和竖向阶跃荷载作用下动力失稳过程的基础上还进一步分析了阶跃荷载与静荷载作用下的稳定性临界荷载之间的关系。
短句来源
     Based on the studying of dynamic stability of double-layer reticular prestressed latticed shell under horizontal and vertical sudden load ,the quantitative relationship of double-layer reticular prestressed latticed shell under horizontal and vertical sudden load and static load is discussed.
     给出了双层球面预应力网壳结构在水平和竖向阶跃荷载作用下动力稳定临界荷载与相应静力稳定临界荷载之间的量化关系。
短句来源
     Research focuses on the responses of single-layer reticulated domes of kiewitt under sudden load. The characteristics of structure responses are analyzed according to multiple index,and the definition of the failure of structures is given.
     针对K 8型单层球面网壳在阶跃荷载下的响应进行了系统分析,综合多项特征响应指标分析了结构响应特点并给出结构破坏定义.
短句来源
  “阶跃荷载”译为未确定词的双语例句
     Dynamic stability of single-layer reticulated domes under horizontal sudden loads
     水平阶跃荷载作用下单层球面网壳结构的动力稳定性
短句来源
     From the composed result, we can know it is a feasible measure. Summarizing the study situation of dynamic stability in special structure, the paper analyzed the dynamic time-history curve of the huge reticulated structure on step loading with the method of dynamic tracing and judge structures' dynamic instability with space principle.
     总结空间结构动力稳定问题的研究进展,应用全过程动力时程追踪分析方法,分析了巨型网格结构在阶跃荷载作用下的动力时程曲线,应用位移判定准则,判定结构的动力失稳。
短句来源
     At last the dynamic stability under the seismic load and stepped load were discussed.
     最后就该结构的动力稳定性作了一些探讨,分析了结构在地震荷载和阶跃荷载作用下的稳定问题。
短句来源
     A practical method for researching dynamic stability of double-layer reticular prestressed latticed shell is put foeward.
     文中提出了实用的动力稳定性判别方法,并应用该方法对网壳结构在地震荷载、阶跃荷载和简谐荷载作用下的动力稳定性进行了系统的研究。
短句来源
     In this paper, four kinds of K8 single-layer spherical shells with spans of 40m and 50m, and rise-span ratios of 1/5 and 1/7 respectively are analyzed. The most unfavorable loads for the structures subjected to aforementioned loads are investigated, in which geometric non-linearity and material non-linearity are taken into account.
     本文以跨度40m、50m、矢跨比为1/5、1/7四种K8型单层球面网壳结构为例,同时考虑几何非线性与材料非线性,对网壳结构进行了简谐荷载、阶跃荷载及地震作用下的结构最不利荷载分析。
短句来源
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  step load
Let its dynamic buckling under step load be reduced to a bifurcation problem caused by the propagation of axial elastic-plastic stress wave.
      
The infinitely long layers are joined together by an elastic bonding agent and one of the layers is subjected to a step load which moves with a constant speed along the layer.
      
Metastability and chaoslike phenomena in nonlinear dynamic buckling of a simple two-mass system under step load
      
Nonlinear dynamic buckling of nonlinearly elastic dissipative/nondissipative multi-mass systems, mainly under step load of infinite duration, is studied in detail.
      
A set of wave propagation and structural dynamics problems, subjected to various load forms such as Heaviside step load, triangular blast load and ramped wind load, are modelled using the new approach.
      
更多          
  step loads
The problems researched can be facilely transformed into Riemann-Hilbert problems and analytical solution to an asymmetrical propagation crack under the condition of point loads and unit-step loads, respectively, is acquired.
      
A simple approximate method has also been used to predict the maximum dynamic response to step loads from the results for static loads.
      
Damped response of thin plates to step loads including geometric nonlinearity
      
This paper presents an approximate solution of the large deflection damped response of thin isotropic circular and rectangular plates subjected to step loads.
      
A novel method (Fuzzy factor method) is presented, which is used in the dynamic response analysis of fuzzy stochastic truss structures under fuzzy stochastic step loads.
      
更多          
  sudden load
This method is applied for different cases like the sudden load changes, switching operations and short circuits.
      
Conflicts arise with operational requirements regarding voltage drop limitation under sudden load increase.
      
Sudden load decreases elicited bursts from distal sensilla, while increased load excited proximal receptors.
      
This paper discusses the effect of "sudden load" on the erector spine reaction and amplitude.
      
The determination of lumbar spine stability was accomplished by measuring the instantaneous trunk stiffness in response to a sudden load release.
      
更多          


In this paper, a dynamic response of elastic-plastic thick plates is analysed by using known elastic solutions. Formulas have been derived here in detail for analyzing the dynamic response of simply supported rectangular thick plates subjected to a uniform step load. The general purpose program for the digital computer is also worked out. Detailed computations are performed for the square plates of various height span ratios. The results essentially consistent with those obtained from the finite element method....

In this paper, a dynamic response of elastic-plastic thick plates is analysed by using known elastic solutions. Formulas have been derived here in detail for analyzing the dynamic response of simply supported rectangular thick plates subjected to a uniform step load. The general purpose program for the digital computer is also worked out. Detailed computations are performed for the square plates of various height span ratios. The results essentially consistent with those obtained from the finite element method. The method presented in this paper may be extended to the thick plates with more complex boundary.

本文利用已知弹性解进行了弹塑性厚板的动力分析。对均布阶跃荷载作用下四边铰支矩形厚板的弹塑性动力响应,推出了具体算式,并编制了通用程序。对不同高跨比的正方形板进行了具体运算,所得的结论与有限元法所得的基本符合。本文的方法可以推广到具有较为复杂边界的厚板。

The equilibrium equations of elastic circular arches are established using the principle of virtual work. The nonlinear partial differential equations of motion are solved using a finite difference method (Park's method for time difference). The dynamic stability of a hinged and a clamped elastic circular arch with a uniform step load is analyzed with finite deformation and initial imperfection. Results show that the buckling mode varies with the value of the arch half angle, θ0. The boundary condition and initial...

The equilibrium equations of elastic circular arches are established using the principle of virtual work. The nonlinear partial differential equations of motion are solved using a finite difference method (Park's method for time difference). The dynamic stability of a hinged and a clamped elastic circular arch with a uniform step load is analyzed with finite deformation and initial imperfection. Results show that the buckling mode varies with the value of the arch half angle, θ0. The boundary condition and initial imperfection amplitude also have effects on the buckling mode. Both the direct and indirect buckling form are discussed. The effect of θ0 on the ratio Pd/Ps(Pdis the dynamic critical load and P,the static critical load. ) is shown for different initial imperfections and different boundary conditions.

本文由虚功原理建立弹性圆拱的平衡方程,用有限差分法对非线性偏微分方程组进行求解(Park法对时间进行差分)。在考虑几何非线性和初始几何缺陷情况下对铰支、固支圆拱在均布突加阶跃荷载作用下的动力稳定性进行分析。结果表明:圆拱中心角的大小、边界条件及初始缺陷幅值都对圆拱失稳模态有影响。文中分析了直接、间接两种失稳形式。并给出了不同初始缺陷及边界条件下圆拱中心角对比值Pd/Pa(Pd为动力稳定临界值,Ps为静力稳定临界值)的影响。

In this paper, a precise solution of the dynamic response of a circular plate subjected to a transverse step-concentrated force non-axisymmetrically loaded is investigated by the method of mode superposition. The result obtained is expressed with the Fourier-Bessel series. The solution of a cilcular plate subjected to an axisymmetric transverse step-concentrated load is only the particular case of this solution. Numerical examples are given for a clamped circular plate subjected to this kind of loading. The...

In this paper, a precise solution of the dynamic response of a circular plate subjected to a transverse step-concentrated force non-axisymmetrically loaded is investigated by the method of mode superposition. The result obtained is expressed with the Fourier-Bessel series. The solution of a cilcular plate subjected to an axisymmetric transverse step-concentrated load is only the particular case of this solution. Numerical examples are given for a clamped circular plate subjected to this kind of loading. The deflection vs. time curves of some typical points of the plate are given.

本文利用模态迭加法求得了夹支圆板在非轴对称的横向集中阶跃荷载作用下动态响应的精确解,所得的解用Fourier—Bessel级数表示。轴对称荷载作用下的解仅是该解的特例。文中还给出了夹支圆饭在非对称荷载作用下板上一些典型点的挠度随时间变化的实例计算曲线,这些曲线具有良好的规律性。

 
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