The results show that dynamical ductility dominated final velocity of fragments.
结果表明 :材料动态塑性是决定破片最终速度的主要因素 ;圆管膨胀时外表面形成以剪切为主的裂纹 ,并向内扩展 ,接近内表面的绝热剪切带伴随着圆管的膨胀而扩展 ,并未出现失稳现象 ,但在正应力的作用下成为优先的断裂通道、决定破片的尺寸和形态 ;中碳Si-Mn贝氏体钢与 5 0SiMnVB钢的破碎性能相近 ,但贝氏体钢动态塑性很更好 ,破碎前的膨胀量较大、更有利于提高破片初速 ,是弹箭比较理想的候选材
The analysed result shows that the dynamic superplastic deformation conditions for liner materials were satisfied before the jet was formed.
通过对回收Cu射流杵体的金相分析得出药型罩在冲击波和挤压剪切变形双重作用下造成晶粒细化和温度升高,并为动态超塑性变形创造了条件,因此在形成射流之前材料已满足动态超塑性变形的条件。
At first, the traditional static elastoplastic theory is used to establish a linear-harden model, and then a nonlinear axisymmetric FEM model is constructed by means of MARC which is based on the dynamic elastoplastic theory.
首先，运用传统的静态弹塑性理论通过建立线性强化模型计算药筒的抽壳力，然后运用动态弹塑性理论通过MARC这种非线性有限元软件建立身管与药筒的轴对称模型计算抽壳力，通过这两种方法得出的结果和实验数据对比表明后一种建模是更好的。
Microstructural feature and evolution of nano-twin bulk Cu specimens produced by means of dynamic plastic deformation at liquid nitrogen temperature (LNT-DPD) have been studied using TEM.
利用透射电子显微镜,对液氮温度下动态塑性形变法(LNT-DPD)制备的块体纳米孪晶铜在不同形变量下的微观结构演变进行了研究。
Numerical simulation of plastic dynamic impact response of operator top guard of hydraulic excavators
液压挖掘机顶部保护装置受冲击塑性动态响应数值模拟
Dynamic Plastic Response of Beams Subjected to Impact of Concentrated Mass
集中载荷冲击下梁的动态塑性响应分析
Numerical Method for Thermo-viscoplastic-damage Constitutive Relation and Research on Dynamic Response of Al-Li Alloys;
含损伤热粘塑性本构数值算法和铝锂合金动态响应研究
Study on the Morphology Structure and Properties of Nylon6 under Vibration Injection Molding;
振动注塑对尼龙6凝聚态结构及其性能的影响
Effects of deformation temperatures on plastic formation and microstructure evolution of 42CrMo steel
形变温度对42CrMo钢塑性成形与动态再结晶的影响
passive state of plastic equilibrium
被动状态的塑性平衡
The ritual activity recalibrates the mind.
规律性动作能重塑心态。”
Preparation of EPDM/PP thermoplastic elastomer modified by nano-silica
纳米SiO_2对动态硫化EPDM/PP热塑性弹性体性能的影响
Effects of 2 kinds of Softener on the Properties of PP/POE/Buffings Thermoplastic Elastomer cured Dynamically
两种软化剂对动态硫化PP/POE/胶粉热塑性弹性体性能的影响
Analysis of Elasto-plastic Finite Element and Dynamic Response of Close-Spaced Tunnels;
近接隧道的弹塑性有限元分析及动力响应研究
Dynamic Plastic Response of Large Ship Deck Subjected to Non-contact Air Blast;
大型舰船甲板在非接触空爆下的塑性动力响应
The Magneto-Elastic-Plastic Dynamic Analysis for Conductive Rectangular Thin Plates;
导电矩形薄板的磁弹塑性动力响应分析
Finite Element Analysis on Dynamic Response of Saturated Elasto-viscoplastic Porous Media;
弹粘塑性饱和多孔介质动力响应的有限元分析
Finite Element Analysis on the Elastic and Plastic Dynamic Behaviors of Saturated Porous Media;
液饱和多孔介质动力响应的弹塑性有限元分析
Analysis of Elastic-Plastic Dynamic Response of Reinforced Concrete Frame Structure
钢筋混凝土框架结构弹塑性动力响应分析
The characteristics of flow stress and dynamic constitutive model at high strain rates for pure iron
纯铁在高应变率下的流动应力特征及其动态塑性本构关系
The Study on the Experiment of the Dynamic Fracture Toughness of Rate-dependent and Elastic-plastic Materials;
应变率相关弹塑性材料动态断裂韧性的试验研究
Development and Applications of the Dynamic Vulcanized EPDM/PP Thermoplastic Elastomer Wireand-able
动态硫化EPDM/PP热塑性弹性体电线电缆的应用及开发