1、

Lagrange equation is applied to develop dynamic equations for the slider crank mechanism with elastic connecting rod. Viscous friction and coupling effect are considered between rigid body motion and elastic deformation of connecting rod.

利用Lagrange方程建立了曲柄滑块机构的动力学数学模型,在建模过程中考虑了连杆的弹性运动与机构刚体运动的耦合以及运动副的粘性摩擦。

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2、

The material is found remained in plastic state from 400 ℃ to 1400 ℃; even at 1400 ℃, no viscous flow is observed. But above 800 ℃, the amount of plastic deformation increases with temperature rising;

材料从400℃开始到1400℃一直保持塑性状态,在1400℃仍没有进入粘滞流动阶段,只是在800℃以上变形量有所增加;

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3、

This overstress phenomenon is related to stress hysteresis of debris flow which consists of shear sparsity at beginning of deformation from viscous drag and internal friction from mutual extrusion of granulae with different sizes.

这种应力过冲特征,与由粘性介质阻力形变初期的剪切稀化和高浓度粗细颗粒相互挤压的内摩擦力共同组成的泥石流体的应力滞后特性(抗剪强度)有关。

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4、

Viscous parameter G can be got by making use of generalized Burgers model. Based on rut prediction of shell a new method to forecast the unrecovered deformation is put forward.

利用广义Burgers模型分析得出了材料的粘性变形参数&粘性变形柔量G,并结合壳牌的车辙预估方法提出了沥青稳定基层永久变形的预估方法。

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