At last, the author analyzes and studies numerical simulation of stretch bending forming with lateral compression.
在论文的最后进行了有侧压拉弯成形模拟的分析与探讨。
Our study shows that the process of rotary stretch bending can be calculated accurately and simulated by both the analytical models and FEM.
对比结果表明：拉弯成形过程的解析模型和有限元模型能够比较准确地计算模拟角型材的拉弯成形过程。
The double groove steel is suspended under the two nodes of bottom chord of steel roof truss to prevent the bottom chord from stretch bending.
文章论述了在设计中采用钢屋架下弦两节点下悬吊双槽钢作为分布梁避免钢屋架下弦拉弯工作。
Stretch bending has been widely applied in the manufacture of extrusions forming in the field such as aviation, aerospace, weapon and automobile.
拉弯成形工艺在航空、航天、武器装备和汽车型材弯曲件的制造中应用非常广泛。
Processing projects: shearing, bending, stretch bending, roll bending, roll round, welding, drilling and tapping, customer sample processing services.
加工项目：剪板、折弯、拉弯、卷弯、卷圆、焊接、钻孔攻牙等，客户来图来料加工服务。
Springback is a common phenomenon in bending process. It has been proved that stretch bending can decrease the springback effectively, which can improve the forming precision.
回弹是弯曲成形中普遍存在的现象，实践证明采用拉弯工艺可以有效地减小回弹，从而达到提高成形精度的目的。
This paper applies the modularization thinking in designing the NC stretch bending machine simulation system, that is an integration system of geometric and physical simulation.
文章运用模块化思想设计了几何仿真和物理仿真集成的数控拉弯机仿真系统，提出了拉弯过程几何仿真、碰撞检测及物理仿真的实现方法。
The influence of axial force on the elastic-plastic stretch bending and sprngbackof a sheet metal is examined and a method to calculate the strain of middle layer is also given.
通过对带钢横截面上应力状态的分析，研究了纵向拉力对带钢变形的影响，给出了计算带钢中性层应变的方法。
Deformation mode is adjusted according to forming limit diagram (FLD) and maximum springback error, so the optimized one can be found, which in turn optimizes the stretch bending trajectory.
根据成形极限图和规定最大回弹超差量来调整变形模式，找到优化的变形模式和拉弯轨迹。
In the paper, the modeling of hydraulic actuator is put forward and the loading boundary conditions of the clamped end of extrusion in numerical simulation of 2d stretch bending is discussed.
本文探讨了拉伸作动筒的建模技术，给出了型材2d拉弯数值模拟载荷边界条件的确定方法。
By using finite element simulation method and plastic distortion theory, the author analyzes the principle of the stretch bending forming and builds finite element model of rotary stretch bending.
本文采用有限元模拟的方法，结合金属成形的塑性变形理论，深入分析了拉弯的成形机理，建立了用于转台式拉弯成形模拟的有限元模型。
Profile stretch-bending is widely used in automobile and aerocraft industry.
型材拉伸弯曲工艺在汽车、航空工业等领域中应用极为广泛。
This paper introduces the working principle and controlling characteristic and studies the PID control models of the force and displacement of the rotary Stretch-bending former.
介绍了转台拉弯机的工作原理及控制特点，研究了其力和位移的PID控制模型。
Slowly bring your wrists up toward your face by bending your elbows until you feel a mild to moderate stretch in your forearms. Keep the backs of your hands together and your hands close to your body.
保持手背贴紧、双手靠近身体，缓慢弯曲肘部、上移双手，直至前臂感觉有轻微的或中等的牵伸感。
Slowly bring your wrists up toward your face by bending your elbows until you feel a mild to moderate stretch in your forearms. Keep the backs of your hands together and your hands close to your body.
保持手背贴紧、双手靠近身体，缓慢弯曲肘部、上移双手，直至前臂感觉有轻微的或中等的牵伸感。
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