1) large diameter SHPB
大直径Hopkinson压杆
2) split Hopkinson pressure bar
Hopkinson压杆
1.
According to the model of the pulse load produced by split Hopkinson pressure bar(SHPB) mechanism,the stress-strain curves were obtained by using ANSYS/LSDYNA finite element method,and the effect of the friction of the interface between the pressure bar and specimen and slenderness ratio of specimen on stress uniformity in specimen were discussed.
根据Hopkinson压杆试验装置产生压缩加载脉冲的力学模型,利用ANSYS/LSDYNA有限元显示动力学程序计算得到了试件在加载过程中的应力-应变曲线,并且和输入材料曲线做了比较,讨论了试件的长径比及试件与压杆之间的界面摩擦力对试件内部应力均匀性和对试件材料动态屈服应力的影响。
2.
The ConeCylinder Projectiles are applied in the split Hopkinson pressure bar experiments.
本文在分离式Hopkinson压杆系统中,探索了应用变截面锥形弹丸实现常应变率力学性能测试的实验方法,以及在较高应变率下实现动态卸载以获取材料的动态弹性模量的可行性。
3) Hopkinson pressure bar
Hopkinson压杆
1.
Design Criterion in Dynamic Fracture Control of Steel Constructions and Design for Hopkinson Pressure Bar;
钢结构防动载断裂设计准则及Hopkinson压杆的设计
2.
Dynamic fracture toughness(KId) of 12Cr1MoV steel at various temperatures is tested with Hopkinson pressure bar used to impact specimens and liquefied nitrogen and alcohol used to modulate experimental temperature.
采用Hopkinson压杆装置对试样冲击加载,完成了12Cr1MoV钢在不同温度冲击条件下动态断裂韧性的测试。
3.
In the present paper,a kind of pneumatically synchronous mechanism is used to the split Hopkinson pressure bar,the technique of high strain-rate loading for a sample at high temperature is introduced.
本文介绍了在分离式Hopkinson压杆装置上通过使用一种气动同步机构,实现对试样进行高温高应变率加载的技术。
4) Hopkinson bar
Hopkinson压杆
1.
By using MTS(Mechanical Threshold Stress)model and the experimental technique of the split Hopkinson bar with the synchronization assemblage,the dynamic constitutive equation of the unidirectional-solidified horizontal-continuous-casting polycrystal copper was investigated.
以带有同步组装技术的分离式Hopkinson压杆装置作为热模拟装置,采用基于MTS(MechanicalThresholdStress)模型建立的FCC晶体结构的动态本构方程,确定了定向凝固水平连铸多晶铜动态本构方程参数,研究了其动态冲击特性,获得高温段(685K~1085K)的理论应力-应变曲线与实验曲线相当吻合,而在低温段(低于685K)的理论曲线与实验曲线出入较大。
2.
By using MTS (Mechanical Threshold Stress) model and the experimental technique of the split Hopkinson bar with the synchronization assemblage, we determined theoretically the parameters of the dynamic constitutive equation of the continuous casting polycrystal copper.
以带有同步组装技术的分离式 Hopkinson压杆作为热模拟装置 ,采用基于 MTS( Mechanical Threshold Stress)模型建立的 FCC晶体结构的动态本构方程 ,确定了多晶铜动态本构方程参数 ,研究了连铸多晶铜的动态冲击特性 ,获得的理论应力 -应变曲线与实验结果相当吻合 ,但不能描述 485～ 5 85 K间回复与再结晶温度区间的变
5) large diameter draw
大直径拉杆
6) split Hopkinson pressure bar(SHPB)
分离式Hopkinson压杆
1.
Experiments with strain rate varying from 101 s-1 to103 s-1 on granite and concrete under uniaxial compressive loading are conducted with the modified split Hopkinson pressure bar(SHPB).
采用黄铜波形整形器改进后的分离式Hopkinson压杆装置,分别对花岗岩和混凝土试件进行不同应变率(101～103)s-1下的单轴冲击压缩试验,有效地减少传统Hopkinson压杆试验中,岩石类脆性材料在内部应力达到均衡之前过早破坏以及输入波的高频震荡给试验数据带来的波动性。
2.
There exist three main problems in the split Hopkinson pressure bar(SHPB) technique of measuring the dynamic properties of concrete material,which are the restriction of nonuniform stress (strain),the dispersion in wave propagation due to the large-diameter SHPB,and the influence of initial rising point of stress wave.
根据实验和理论分析,目前分离式Hopkinson压杆装置(SHPB)间接测量混凝土材料动态应力—应变关系时主要存在三方面问题,分别是应力应变不均匀的限制、大尺寸SHPB压杆产生的应力波弥散及数据处理时应力波波头选取的影响。
3.
The Split Hopkinson Pressure Bar(SHPB) is an ideal tool in carrying out high-speedloading to quasi-brittle materials, it can afford many loading means loading means to mensurate materials properties under dynamic loading.
分离式Hopkinson压杆是对准脆性材料实施高速加载的理想工具,利用该装置可以对准脆性材料实施各种加载方式,测定材料的动力特性参数。
补充资料：卧式镗床（镗杆直径≥160mm）
| ||||||
（一）几何精度 | ||||||
坐标定位精度（mm） | ＜0.02 | 0.03~0.05 | 0.06~0.10 | ＞0.10 | ||
（二）加工精度 | ||||||
1、圆度允差（mm） | ＜0.01 | 0.01~0.015 | 0.015~0.025 | ＞0.025 | ||
2、表面粗糙度Ra值（μm） | ＜0.8 | 1.6 | 1.6 | ＞1.6 | ||
（三）控制系统 | ||||||
具备数控数显装置 | 有 | 部分有 | 无 | 无 | ||
（四）噪声dB（A） | ＜82 | 83 | 84~85 | ＞85 | ||
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条