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incident bar
相关语句
  入射杆
     Split Hopkinson pressure bar(SHPB) with a wedge and its holder appended to the end of its incident bar is used to get high loading rate split forces;
     在分离式霍普金森压杆(Split Hopkinson Pres-sure Bar—SHPB)的入射杆杆端附加劈尖及其基座,实现对试样施加高速率的劈裂载荷;
短句来源
     The experiments measuring portrait displacement of the incident bar under the loading of Hopkinsn bar, are successful.
     并成功地测量了Hopkinson压杆加载下的入射杆端面位移剖面,从而验证了该测试系统的可行性。
短句来源
     While the temperature in specimen reaches the desired temperature,a driving mechanism shifts the transmission bar and the specimen to contact the incident bar,so that the transmission bar,the specimen and incident bar fully contact each other just before the stress wave reaches the interface between incident bar and specimen.
     当试样加热到预定温度时,气压驱动同步组装系统,推动透射杆及试样,使得应力波到达入射杆与试样接触面时,入射杆、试样及透射杆紧密接触。
短句来源
     In order to obtain dynamic fracture toughness of rock under high loading rates and to analyze the rate effect,an experimental procedure using edge-notched disc specimen was presented. Split Hopkinson Pressure Bar(SHPB) with a wedge and its holder appended to the end of the incident bar was used to exert dynamic split force at the edge notch of the specimen.
     为了获得岩石在高加载速率作用下的动态断裂韧度值并分析加载速率的影响,由分离式霍普金森压杆入射杆杆端附加劈尖及其基座对边切槽圆盘试样施加动态劈裂载荷。
短句来源
  “incident bar”译为未确定词的双语例句
     We stick a copper disk at the front face of the incident bar, the deformation of the copper damps the incident waveform to ensure dynamic stress equilibrium and homogeneous deformation in the specimen.
     在输入杆前端的中心位置粘贴一块可塑性好的黄铜圆片,通过它的塑性变形来有效地增加入射应力脉冲的上升时间,从而保证试样中变形均匀和应力平衡。
短句来源
     By using a narrow heated furnace, designed and manufactured by NPU, dynamic impact experiments at temperature 1200K were accomplished. The optimized parameters of the pressure, which push output bar, and the distance between incident bar and transmission bar were obtained.
     在本论文工作中,自行研制了一台窄区加热炉,并通过实验获得了动量杆推动装置的压力及动量杆运动距离的最佳匹配参数,保证了高温实验的同步组装,完成了温度高达1200K的动态冲击实验。
短句来源
  相似匹配句对
     Book Bar
     书吧
短句来源
     ZETA BAR
     Zeta酒吧
短句来源
     The experiments measuring portrait displacement of the incident bar under the loading of Hopkinsn bar, are successful.
     并成功地测量了Hopkinson压杆加载下的入射杆端面位移剖面,从而验证了该测试系统的可行性。
短句来源
     The Methodology Incident to Editology
     编辑学应有的方法论之意
短句来源
     EVALUATION OF CHEMICAL INCIDENT
     化学事故危害评估
短句来源
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  incident bar
Two transducers are used, one at the interface between the specimen and the incident bar and the other at the interface between the specimen and the transmitter bar.
      
The conventional split Hopkinson pressure bar apparatus is modified by placing a combination of copper and steel pulse shapers on the impact surface of the incident bar.
      
In addition, we measure strain-time at two locations on the aluminum incident bar to show that the incident strain pulse is nondispersive and we calculate rigid-body acceleration of the tungsten disk from a model that uses this strain-time data.
      
The Plexiglas or copper disk pulse shaper produces a nondispersive stress wave that propagates in the aluminum incident bar and eventually interacts with a tungsten disk at the end of the bar.
      
An aluminum striker bar impacts a thin Plexiglas or copper disk placed on the impact surface of an aluminum incident bar.
      
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To ensure the material uniformity of the specimen, big radial size split Hopkinson pressure bar must be used in the experiment for concrete. While the dispersion due to the equipment with big radial size and the uneven stress in the specimen due to the specimen′s eveness and brittleness not only lower the experimental precision, but also restrict the experimental strain rate. Gluing rubberized fabric on the side of incident bar to reduce the wave dispersion and using multiaspect accessory to avoid the...

To ensure the material uniformity of the specimen, big radial size split Hopkinson pressure bar must be used in the experiment for concrete. While the dispersion due to the equipment with big radial size and the uneven stress in the specimen due to the specimen′s eveness and brittleness not only lower the experimental precision, but also restrict the experimental strain rate. Gluing rubberized fabric on the side of incident bar to reduce the wave dispersion and using multiaspect accessory to avoid the uneven stress in the specimen are the two betterment measures of the experiment. The wave obtained in the equipment testing indicates that the two measures would heighten the precision of experiment.

在混凝土材料的 Hopkinson杆试验中 ,为保证试件材料的均匀性 ,必须采用大杆径的 Hopkinson装置。然而 ,大杆带来的弥散问题以及混凝土试件的平整度与脆性导致的试件应力不均匀问题 ,大大降低了混凝土 SHPB实验的精度 ,同时也限制了其实验应变率的提高。采用在入射杆贴软胶布减少弥散 ,以及使用万向头来消除试件的应力不均匀 ,是两个有效的试验改进方法 ,从试验所测的波形看 ,这将有助于实验精度的提高

The Hopkinson bar technique with a furnace and a driving mechanism is utilized to determine the dynamic property of materials at elevated temperature and high strain rates.The specimen is heated by a furnace independently.While the temperature in specimen reaches the desired temperature,a driving mechanism shifts the transmission bar and the specimen to contact the incident bar,so that the transmission bar,the specimen and incident bar fully contact each other just before the stress wave reaches...

The Hopkinson bar technique with a furnace and a driving mechanism is utilized to determine the dynamic property of materials at elevated temperature and high strain rates.The specimen is heated by a furnace independently.While the temperature in specimen reaches the desired temperature,a driving mechanism shifts the transmission bar and the specimen to contact the incident bar,so that the transmission bar,the specimen and incident bar fully contact each other just before the stress wave reaches the interface between incident bar and specimen.The dynamic properties of single crystal copper and polycrystal copper at the temperature range from room temperature to 1 085 K are tested.The results show that the flow stress of both materials decreases with increase of temperature,and strain hardening rates at a temperature below 585 K are greater than that at the temperature above 585 K.

描述了一种利用Hopkinson杆装置确定在高温(温度可高达1 173 K)、高应变率下材料动态性能的试验方法。在试样加温过程中,试样不与入射杆及透射杆接触。当试样加热到预定温度时,气压驱动同步组装系统,推动透射杆及试样,使得应力波到达入射杆与试样接触面时,入射杆、试样及透射杆紧密接触。利用以上系统,完成了连铸单晶铜及上引法连铸多晶铜从室温到1 085 K范围内的应力应变曲线。测试结果表明,不论是上引法连铸多晶铜还是连铸单晶铜,流动应力随温度的升高而下降,在温度低于585 K时,材料的应变硬化率明显大于在温度高于585 K时的应变硬化率。

An experiment on dynamic rock fracture toughness test using edge-notched disc specimen is presented.Split Hopkinson pressure bar(SHPB) with a wedge and its holder appended to the end of its incident bar is used to get high loading rate split forces;three strain gauges are attached along the ligament in front of the crack in order to detect initiation time and crack process;and then put the splitting force history and initiation time into finite element method to obtain dynamic fracture toughness at crack...

An experiment on dynamic rock fracture toughness test using edge-notched disc specimen is presented.Split Hopkinson pressure bar(SHPB) with a wedge and its holder appended to the end of its incident bar is used to get high loading rate split forces;three strain gauges are attached along the ligament in front of the crack in order to detect initiation time and crack process;and then put the splitting force history and initiation time into finite element method to obtain dynamic fracture toughness at crack initiation.The marble specimen experiment result indicates that: a perfect splitting load can be gotten from combination of SHPB and wedge;the dynamic response of marble lags behind the load of SHPB;the crack expands fast;the dynamic marble fracture toughness of edge-notch specimen increases markedly under high loading rate,and it's(5.15) MPa·m~(1/2) at the loading rate of(2.88)×10~4 MPa·m~(1/2)s~(-1).

提出用边切槽圆盘试样测量岩石动态断裂韧度的实验方法。在分离式霍普金森压杆(Split Hopkinson Pres-sure Bar—SHPB)的入射杆杆端附加劈尖及其基座,实现对试样施加高速率的劈裂载荷;将劈裂载荷时间历程及裂纹扩展时间输入有限元法计算模型得到动态应力强度因子时间历程;3个应变片粘贴在试样的切槽前端韧带上,测定裂纹扩展起始时间和扩展过程;结合动态应力强度因子历程和裂纹扩展时间,获得试样的起裂动态断裂韧度值。对大理岩实验的结果表明,边切槽圆盘试样能得到理想的劈裂加载;当加载速率为2.88×104MPa.m1/2.s-1时,所测大理岩的动态断裂韧度为5.15 MPa.m1/2,大理岩的断裂韧度在高加载速率下明显地提高。

 
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