针对这种情况,从成形极限图(FLD)上讨论了可能的工艺改进方案。
The improving processes are proposed based on the Forming Limit Diagram (FLD) analysis.
通过对比一般方形毛坯和优化毛坯的成形极限图,证明优化毛坯具有更好的成形性。
In order to prove that the optimum blank had better formality than the general rectangular blank, both finite limit diagrams were compared.
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。
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.
在利用共稳理论对实际应力应变曲线进行分析的同时,得出了求作板材成形极限图的新方法。
By analyzing the real stress - strain curve with theory of plastic instability and using this testing method, another form of the forming limit diagram has been found.
将厚度梯度准则与有限元方法相结合,可在已知薄板单拉性能参数的条件下计算获得其成形极限图。
By combining the "thickness gradient criterion" and FEM, the FLD of sheet metal can be calculated when the tensile properties is available.
本文通过实例验证了FLSD在判断复杂应变路径下的多道次零件成形比基于应变的成形极限图更加可靠、有效。
The thesis validates through actual experiments that FLSD is much more reliable and effective than the strain-based FLD in determining the multistage part formability under complex strain paths.
有了性能极限图,加上对服务器工作负载增长趋势的跟踪,就可以在出现重大危机之前升级服务器,轻松赢得这场战争。
Armed with performance envelope graphs, combined with tracking your server workload growth trends, you can win the battle for upgrading a server before there is a major crisis.
但它是依赖于加载路径的,用它来分析多道次板成形是不合适的,于是人们提出了与加载路径无关的应力成形极限图。
Forming limit diagram is used for analyzing sheet forming in finite element analysis software have proposed forming limit stress diagram which is not relies on the loading path.
对拼焊板的焊接方法、材料应用、冲压成形性能分析、拼焊板成形极限图的建立方法和有限元分析焊缝建模方式进行了综述。
Such TWB-related questions as the welding technology, materials, stamping formability, the establishment of FLC, and the finite element analysis of the welding modeling are surveyed.
对计算得到的轮包成形极限图、应力应变分布图进行了分析,并采用基于网格分析法的物理实验验证了有限元建模的可靠性和正确性。
The validity of modeling, the accuracy and reliability of simulation results for stamping forming processes of hubcap are affirmed on the basis of grid strain analysis technique.
成形极限图通常是通过钢模胀形试验测得,实际测量的成形极限图与ASAME自动应变测试分析系统模拟计算的成形极限曲线吻合较好。
FLD is usually measured with swell test in rigid die. The tested FLD is good fit that one measured by analogue computer in ASAME (Automated Strain Analysis and measure Environment).
一些国外学者在板料成形极限图的基础上提出了板料应力成形极限图(FLSD)的概念,并认为板料应力成形极限图具有与路径无关的特点。
Some foreign scholars developed the concept of Forming Limit Stress Diagram (FLSD) on the basis of FLD. FLSD is considered as strain path independent.
据英国《太阳报》报道,日前他脚蹬轮滑鞋,以90公里的时速滑过了斯图加特一个长达860米的过山车,从而创造了一项极限轮滑的世界纪录。
German thrill-seeker junkie Dirk Auer (see photo), 36, has set a new world record, roller skating down an 860m rollercoaster at speeds of 90 km per hour in Stuttgart, the Sun reported.
本文证明了路与回路的多重笛卡尔乘积的联结数的一个定理,并给出了若干多重乘积图的联结数的极限性质。
In this paper, a theorem for the binding number of multiple cartesian product of path and circuits is proven, and some limit properties of the binding number of multiple product graphs are presented.
图8.15表示试验得出的极限粘着力对爬动量的关系。
Fig. 8. 15 shows some experimental results for limiting adhesion against creep.
能量图的优点,乃是使人们对运动的极限一目了然。
The advantages of the energy diagram are that it shows at a glance the limit of the motion.
所得结构图像的分辨本领将优于电子显微图,而有可能接近于衍射分辨极限。
The resolution of the structure image so obtained may be higher than that of the original electron micrographs and may approach the diffraction limit.
动画的技术没有极限,你可以不画一张图的制作一部动画片。
Allow me to make a drawing analogy for you artists in the crowd.
给出了完整的分支图和各区域上的相轨线结构。结果表明,非对称项引起二重极限环分支和分支曲线的复杂性。
Moreover, a formula for calculating double limit cycle bifurcation is derived. Finally, the complete bifurcation diagrams and phase portraits are obtained.
职前教师缺乏对极限内容的深刻理解,可以运用画思维导图、访谈和讨论等方法深化职前教师对概念的理解。
Mainly with the tool of Mind Map, this paper studied how preservice teachers develop their understanding of limit concept.
所得结构图像的分辨本领将优于电子显微图,而有可能接近于衍射分辨极限。
The resolution of the structure image so obtained may be higher than that of the original el…
所得结构图像的分辨本领将优于电子显微图,而有可能接近于衍射分辨极限。
The resolution of the structure image so obtained may be higher than that of the original el…
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