回弹

板料V形弯曲回弹的动力显式有限元分析

Dynamic explicit finite element analysis of springback of sheet V-bend I ng

超级钢板材V型弯曲回弹的数值模拟

Numerical Simulation of V-Bending Springback for Super Steel Plate

本文将超声回弹综合法用于负温混凝土强度检测。

The strength of negative temperature concrete is tested with supersonic-rebounding method .

矩形型钢弯曲回弹曲率半径r值的确定

Determination of the Curvature Radius of Bending Resilience of Rectangular Shape Steel

工程降水对深基坑坑底回弹影响的FLAC~（3D）分析

Application of FLAC ~ ( 3D ) to Analyse Impact of Dewatering Engineering to Peep Pit Soil Resilience

基于USB接口的无线数传回弹仪系统记录器的研制

The research of wireless rebound tester system recorder based on USB interface

基于薄板翻边回弹试验的RBF神经网络模型

Modelling of Springback with RBF Neural Network Based on Experiments in Flanging Operation

回弹是U形件冲压成形的主要制造缺陷，严重影响零件的形状精度。

: The central concern in forming U-shaped parts is the effect of springback on the geometry .

基于BP神经网络的车身U形类冲压件成形回弹预测

Prediction of Springback Value for U Shaped Parts in the Stamping Process of Auto Body Panel Based on BP Neural Network

结果表明，在V形弯曲中铝合金板材的弯曲回弹角随弯曲角度数的增加而减小，随相对弯曲半径的增加而增加；

The results indicated that the springback angle decreased with increase of the bending angle and decrease of the relative bending radius .

提出了报高PP纤维的模量和回弹率以及地毯的耐倒伏性的新途径。

The new way to improve modulus and resilience of PP fiber and lodging-resistant property of PP carpet yarn is suggested .

介绍了U形件弯曲成形中回弹的机理和影响因素。

In this paper , the spring back mechanism and its influencing factors of U shaped parts in bend forming are introduced .

新指标以相同的参数衡量2-D弯曲件和3-D复杂冲压件的回弹水平，做到了评价指标相对于不同评价对象的一致性。

The new criterion , being of good uniformity , can be used for evaluation either 2 D bending parts or 3 D complex stamping parts .

UOE大直径直缝埋弧焊管U成形回弹量分析

Analysis of rebound elasticity of UOE full dimension submerged weld straight pipes in the course of U-forming

找到用该分散液合成PU高回弹泡沫塑料的配方路线，其主要性能指标达到PU高回弹泡沫塑料的ASTM标准。

The major properties of the PU high resilience foams reached the level of ASTM standards for PU high resilience foams .

通过合理的结构设计，对内外环V形金属石墨缠绕垫片的压缩回弹和密封性能进行优化试验研究，找出性能最佳的结构与工艺参数。

Through reasonable design for structure , and optimizing test research for compress recovery and seal performance , optimal structure and technology parameters of the gasket enlaced by V metal graphite were found out .

通过实例计算验证，得到的这个Et非线性回归方程完全能够满足水泥混凝土路面基层顶面当量回弹模量的计算要求。

Et non-linear regression equation get by the example calculation , test and verification can fully meet the calculation requirement of equivalent rebound modulus of base top surface of cement concrete pavement .

针对板材三维冲压成形的切边回弹问题，提出了基于大变形弹塑性有限元数值模拟理论的切边处理AIA方法。

In this paper , an edge-cutting AIA method is presented based on elastic-plastic large deformation finite element simulation theory .

采用更广泛的试验数据，运用DYNAFORM软件对薄板弯曲成形和回弹的数值模拟。

Widely adopting testing data and applying DYNAFORM to simulate bend and Spring Back of sheet .

本文重点开展了凸弧翻边、凹弧翻边、V型件冲压、U型件冲压等典型冲压工序的回弹试验研究。

This paper emphases on experimental investigations on springback in typical forming operations such as convex edge flanging , concave edge flanging , " U " shape component forming , and " V " shape component forming .

通过对国内外回弹仪系统的分析比较，根据回弹仪系统的检测原理，结合现代光电转换技术和电子技术的应用，提出了基于线阵CCD的智能回弹仪系统。

Via compare with domestic and aboard rebound hammer , according the principle of rebound hammer , combining the photo-electricity and electronic technology , we design a new intelligent system of rebound hammer based on linear CCD .

当放电电压达到400V时，晶粒尺寸略有回弹。

But when discharging voltage increases further to 400V , the grain size rebounds slightly .

将其结果和用有限元通用计算程序ANSYS软件对杆件和直梁的回弹进行模拟计算的结果加以比较，以及通过做一个简支梁的回弹试验来验证回弹能量原理及其有限元法的正确性。

And , springback of member bar and straight beam is simulated by finite-element program software ANSYS . Both of the springback energy theory and the finite-element method are verified by a springback test of simply supported beam .

同时使用该模型，对横、纵向拼焊板在不同的参数下对成形和回弹的影响进行分析，得到了拼焊板V形自由弯曲的成形特点及影响回弹的主要因素。

At the same time using this model , of central , longitudinal weld blank at different parameters on the forming and springback analysis of the effects , has obtained the influence rule to the bending forming characteristics and springback .

研究了冷拉伸对聚酯纤维聚集态结构、聚酯纤维回弹性能的影响，并讨论了PTT纤维的弹性回复机理。

The effect of cold drawing on aggregation structure of PET fiber and the rebounding performance of PET fibers were studied , and the elasticity recovering mechanism of PTT fiber was discussed .

对于具有Bauschinger效应的材料及复杂加载问题，采用非线性混合强化材料模型预测板料回弹量的精度最高；

For material of Bauschinger effect and complex loading problems , nonlinear combined hardening material model was more accurate in prediction of sheet metal springback .

介绍了建立衢州地区混凝土回弹测强曲线的试验方案、及运用Excel表格进行回弹数据的回归分析的方法和步骤。

The experimental program of curve to detect concrete compression strength with resiliometer for quzhou area is introduced in the paper . The method and process of regression analysis of rebound date by excel database is also introduced in the paper .

随CHDM含量的增加，共聚酯结晶性能下降，纤维强度下降。共聚酯纤维具有优异的弯曲回弹性和染色性能，且随CHDM含量的增加而提高。

The crystallization ability of PETG copolyester and its fiber strength decrease with the increasing of CHDM content .

试验证明该公式成功地揭示了工件的稳定相对高度hp以及与材料性能有关的材料综合性能指数A、B对回弹的影响规律。

The experiment results show that the formula can be used for describing the effect of rulers , such as hp , the stable relative height of the workpiece , and the material combined behavior indexes A and B , on the spring back of the piece .

结果表明，PTT长丝的瞬时拉伸回弹性能明显优于PBT长丝，更优于PET长丝，PTT长丝在低伸长率和高伸长率下均具有优异的瞬时拉伸回弹性能；

The results showed that the instant resilience of PTT filament was superior to that of PBT and PET filaments . PTT filament has an excellent instant resilience not only at lower elongation but also at higher elongation .