查询词典 torsion curve

A curve coordinate system which is suitable for variable height curved box-girder were established. The flexure, torsion and distortional warping displacement functions were established, and the strain-deformation equations were obtained, a spatial finite element analysis method of trapeziform cross section variable-curvature box-girder with vertical symmetrical axis was also presented.

建立适合于变高度曲线箱梁的曲线坐标系，推导了变曲率、变高度箱梁弯曲、翘曲扭转和畸变的位移方程和应变-位移关系式，提出了具有一个竖直对称轴的变高度变曲率曲线箱梁的薄壁曲梁空间分析有限元方法。

The torsion of a curve;.

曲线的第二曲率

The transfer matrix method is used to carry out the vibration characteristic analysis of the fluid-filled piping system. The transfer matrix of the axial, transversal and torsion vibration of the fluid-filled straight pipe element is presented. And the transfer matrix of the elbow is derived according to the discrete model of the inextensible theory of the curve pipe. The effect of the flexural factor on the elbow's transfer matrix is studied.

基于充液直管的梁模型，考虑液体与管道之间的泊松耦合，详细推导了充液直管单元的轴向、横向及扭转振动传递矩阵；采用弯管不延伸理论的离散模型，将变管离散为一组首尾相连，并成一定角度的短直管单元，通过建立弯管处力平衡方程与连续性方程，建立了弯管平面内振动的传递矩阵，并研究了弯曲因子对传递矩阵的影响。

The torsion of the intersection curve of two surfaces in R3 can be expressed by geodesic torsions,normal curvatures and the angle between surfaces.

即两曲面交线的挠率可以用两曲面的测地挠率、法曲率及两曲面的夹角表示。

The torsion of a curve;.

曲线的扭量

Finite-strain constitutive relationship based on Oldroyd objective rate of Kirchhoff stress by τ-γ curve of torsion test with cylindrical specimens is presented.

以扭转实验测得的τ-γ曲线为基础，采用各向同性硬化大应变J2流动本构理论，给出了基于Kirchhoff应力的Oldroyd客观导数的塑性刚度函数h的表达式，建立了相应的大应变本构关系。

Finally, based on the theory of Timoshenko beam, a beam model of this crankshaft is built, which is compared with solid model. The results indicate that this beam model can meet the needs of calculation precision and calculation efficiency. With this beam model, the condition in which real loads are put on the crankshaft is simulated. The displacement curves、velocity curves、acceleration curves of the main journals and the pulley of this crankshaft and torsion vibration curve of the pulley are then gained. With these curves, the dynamic characteristic of the crankshaft is analyzed. The conclusion indicates that this crankshaft has good dynamic characteristic.

最后利用Timoshenko梁理论建立了曲轴的梁单元模型，将此梁单元模型与体单元模型进行了比较，结果表明梁单元模型能够满足精确度和计算效率的要求；利用该梁单元模型，模拟了实际条件下的载荷作用时曲轴的响应，得到了曲轴各主轴颈和皮带轮端的位移、速度、加速度曲线以及皮带轮端的扭转振动曲线，分析了曲轴的动态特性，结论表明该型曲轴具有良好的动态特性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。