• 边界界面动态接触约束接触判断3复杂体积成形有限元数值模拟关键技术问题之一。

    One of the key technique problems is boundary dynamic contact constraint and contact judgment in FEA simulation for 3d complicated massive forming.

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  • 多点成形压力机多轴齿轮传动形单元为例,研究了传动系统输出响应动态特性

    This paper analyzed the system output response dynamic characteristics of spinning gear adjustment control system of multi-point forming press.

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  • 使用基于动态显式算法商业软件LS - DYNA建立了某汽车发动机隔热罩成形有限元模型

    A finite element model describing the drawing process of the heat-shield panel of automobile engine is established by using the commercial dynamic explicit code LS-DYNA.

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  • 金属成形数值仿真技术关键模具动态变化锻件构形进行数学描述和网格自动生成。

    The key technique in a numerical simulation of the metal forming process is the mathematic representation of dies and dynamic forging geometry as well as the generation of meshes.

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  • 通过采用影响节点控制方法以及边界节点分布密度动态控制方法,实现了塑性成形过程的无网格伽辽金方法的自适应分析

    The influence domain control method and adaptive boundary points setting method were developed and the large metal forming meshless analyses were realized.

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  • 提出了一种动态有限元解算器,并采用遗传算法矩形激光弯曲成形工艺参数进行优化设计的方法。

    Using explicit dynamic FEM as a solver, process parameter optimization design on laser bending of rectangular sheet metals was conducted with genetic algorithms (GA).

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  • 塑料板材成形过程三维温度进行有限元分析采用动态内部热源方法潜热进行了处理

    The method of dynamic internal heat resource is adopted to deal with the latent heat during FEM analysis of 3-d temperature field of plastics thermoforming in this paper.

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  • ANSYS/LS-DYNA求解器动态模拟铆钉成形过程塑性单元变形过程,计算出铆钉各个单元应力应变

    The process of forming and changing of plastic elements is simulated by ANSYS/LS-DYNA solver, and also computes the distributing of element stresses and element strains.

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  • 优化动静特性控制动态特性优良,焊接过程稳定飞溅少,成形好。

    Optimized control of dynamic and static characteristics, fast response, stable welding current, reduces spatter and distortion, smooth welding surface.

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  • 综述了日本放电加工领域最新研究动态包括成形放电加工、微细放电加工线切割放电加工三部分内容。

    The newest trends of electrical discharge machining (EDM) including die-sinking EDM, micro EDM and wire EDM (WEDM) in Japan were presented.

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  • 目的应用经颅多普勒超声(TCD动态观察脑保护滤网下颈动脉支架成形操作阶段所产生的微栓子信号MES)数量。

    Objective Transcranial Doppler (TCD) can be used to monitor microembolic signals (MES) in different procedure phases during filter-protected carotid angioplasty and stenting(CAS).

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  • 结果48A-H肾盂成形术病人术后复查肾盂明显缩小肾功能改善,电视动态观察UPJ处蠕动良好

    Results:On post operative check the renal pelvis obviously lessened in the 48 A H pyeloplasty cases, the renal function improved, and the peristalsis at the UPJ was fine on the screen.

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  • 在本文我们报告(视网膜原始细胞)结构三维培养介质中的动态的、自发性成形过程培养介质是由胚胎干细胞聚集物组成。

    Here we report the dynamic, autonomous formation of the optic cup (retinal primordium) structure from a three-dimensional culture of mouse embryonic stem cell aggregates.

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  • 分析了毛坯应变分布典型节点外径壁厚轴向伸长量随时间变化曲线,对整个成形工艺及变形机制有较好的动态认识。

    Simulation results show strain distribution of workpiece and how outer diameter, thickness, axial elongation of some typical nodes change with time.

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  • 等离子成形,粒子飞行特性是影响沉积率和涂层动态生长质量重要因素,而熔射工艺参数又是影响粒子飞行特性直接因素。

    Experimental study was carried out to investigate the influence of the main processing parameters on the quality of sprayed coatings during the plasma spray tooling process.

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  • 等离子成形,粒子飞行特性是影响沉积率和涂层动态生长质量重要因素,而熔射工艺参数又是影响粒子飞行特性直接因素。

    Experimental study was carried out to investigate the influence of the main processing parameters on the quality of sprayed coatings during the plasma spray tooling process.

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