实践证明，反向模拟技术对于预成形优化设计是一种非常有效的方法。
The practice proves the reverse simulation technique is a very efficient approach to optimize the preform design.
反向模拟结合了塑性形变理论和有限元技术，直接由工件反算出毛坯。
Raverse analysis, based on the plasticity theory of deformation and FEM, however, can calculate the blank contour directly from a given part.
采用DEFORM 3d软件，通过正向模拟验证了反向模拟所获得的预成形毛坯的合理性。
The rationality of preformed billet is testified through forward simulation by software DEFORM3D.
采用该系统对叶片精锻过程进行了三维反向模拟，获得了叶片叶身部分合理的预成形毛坯形状。
The blade precision forging process is simulated by the backward simulation system, and the reasonable preformed billet shape of blade body is obtained.
改进的反向模拟法采用了一种基于塑性流动理论的本构方程，可以充分考虑应变历史对塑性变形的影响。
The constitutive equation in the present method is based on flow theory of plasticity to consider the loading history, while deformation theory of plasticity in the classical inverse analysis method.
预成形毛坯设计是精密塑性成形工艺的核心环节，而反向模拟技术可以实现预成形设计的高效化、数字化和智能化。
Preform design is one of the key steps in precise plastic forming, and backward simulation technology plays important role in preform design.
模拟器会提供有效的替代方法测试不常见的场景或难以使用活动后台系统实现的反向(negative)测试案例。
Simulators provide an efficient alternative for testing rare scenarios or negative test cases that are difficult to produce using live back-end systems.
这次模拟器没有对表面行波、相邻边界和缝隙的反向散射，或者边缘绕射散射效应进行建模。
At this time the simulator does not implement surface travelling wave modelling and associated edge or gap backscatter modelling, or edge diffraction scattering effect modelling.
探讨了板料成形中两种数值模拟方法：增量方法和反向方法。
In this paper, two numerical simulation methods of sheet metal forming, incremental approach and inverse approach are discussed.
为从无偏振混浊介质背向散射光确定散射光学参数，设计了倾斜入射的模拟光路以及用复合反向传播神经网络求解的方案。
To determine the optical parameters of turbid media with an unpolarized backscattering light an oblique incidence geometry with the compound bp neural network has been designed.
计算机模拟和实物的对比实验表明，该方法能有效地提高反向条纹投影的精度。
Through comparison of experiments using computer stimulation and a real object respectively, a conclusion is gotten that this method can improve precision of inverse fringe projection effectively.
实现对否定句的实际状态模拟是受到语用条件的限制的，否定并不是对否定辖域命题内容的反向推理。
The achievement of simulation of actual state of affair was constrained by the pragmatic factors. Negation was not the opposite inference of the propositional contents within the negation scope.
介绍了应用反向动力学设计复杂机构三维动态模拟图形的方法，并具体应用到液压挖掘机等工程装备中。
The design method using inverse kinematics for three dimensional dynamic simulation of complex mechanism is introduced and applied to construction machinery such as hydraulic excavator.
建立了描述反向凝固结晶器中流动与传热的数学模型，并在此模型基础上进行了计算机模拟和仿真。
The mathematical model which describes the flow and heat transfer in inverse solidifying mold was established. Base on the model, a series of study with computerized simulation was taken.
模拟实验结果表明，递归反向传播控制神经网络对多种形式的超声马达参考速度都有很好的控制效果。
Numerical results show that the recurrent back propagation control neural network controller has good effectiveness for various kinds of reference speeds of the ultrasonic motor.
对反向喷流流场进行了数值模拟研究。
The problem of reverse jet flow is simulated with the software.
通过构造反向传播神经网络，对裂纹尖端的应力场进行模拟，进而实现对裂纹尖端应力场函数的逼近。
The stress field around the crack tip is simulated via the constructed Back-Propagation Neural Network (BPNN) whereby achieving the approximation of the stress field around the crack tip.
模拟分析表明，一种反向势垒的存在及其击穿，应是引起负阻现象的原因。
An inner reverse barrier is simulated with the I-V curves, as shows that the negative resistance phenomenon is caused by the break down of the reverse barrier.
为从无偏振混浊介质背向散射光确定散射光学参数，设计了倾斜入射的模拟光路以及用复合反向传播神经网络求解的方案。
To determine the optical parameters of turbid media with an unpolarized backscattering light, an oblique incidence geometry with the compound BP neural network has been designed.
摘要在基于有限元数值模拟的基础上提出了反向最小余量法，用以优化芯辊进给速度曲线。
A new method, which named reverse shrinking surplus method, has been pointed out based on the fem in order to optimize the speed curve of the spindle.
摘要在基于有限元数值模拟的基础上提出了反向最小余量法，用以优化芯辊进给速度曲线。
A new method, which named reverse shrinking surplus method, has been pointed out based on the fem in order to optimize the speed curve of the spindle.
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