There was obvious scattering for the test results of dynamic fracture toughness under high loading rates.
断裂韧度数值在高加载速率下呈现出明显的离散性。
The study can be referenced to the reliability analysis and safety evaluation of dynamic fracture behavior.
这里工作对于压力管道的可靠性分析及动态断裂安全评定具有重要的参考价值。
The result shows that the dynamic fracture toughness is affected by both the loading rate and the specimen size.
测试结果表明，岩石的动态断裂韧度同时受到加载率效应和尺寸效应的影响。
And the difference can not be explained qualitatively and quantitatively by the present dynamic fracture theory.
采用当前的动态断裂理论尚不能定性和定量地解释实测值与理论值之间的差异。
From the view point of material selection, we analyzed their dynamic fracture toughness and crack propagation resistance.
从选材角度对比分析了几种铝合金的动态断裂韧性及裂纹扩展阻力。
An experimental technique for measuring dynamic fracture toughness under the action of stress wave is described in this paper.
本文介绍了一种研究材料动态断裂韧度的实验技术。
The dynamic fracture toughness of five groups ceramic were tested and the obtained results are 1.08-2.83 times of static results.
测试了五组陶瓷的动态断裂韧性，所测断裂韧性的动态结果是静态结果的1.08 ~ 2.83倍。
The dynamic fracture process of sea ice interacting with JZ20-2NW platform is performed on the basis of finite element software—LS-DYNA.
通过有限元软件LS-DYNA模拟了海冰与JZ20-2NW北高平台相互作用的动态断裂过程。
In this paper, the dynamic fracture toughness measuring method for 921a shipbuilding steel is studied by instrumented Charpy impact test.
本文利用示波冲击试验，对船用921A钢动态断裂韧性的测试方法进行了研究。
According to the standard testing method of ISRM, the dynamic fracture toughness for the basalt samples in different depth has been measured.
按照国际岩石力学学会试验规范，对不同赋存深度的玄武岩岩样进行了动态断裂韧性测试。
Welded joint is a mechanical heterogeneous body, and the mechanical heterogeneity has great effect on dynamic fracture behaviour of welded joint.
焊接接头是一个宏观力学不均匀体，力学不均匀性对焊接接头的动态断裂行为有重要的影响。
According to the view of random arrival time of incident wave, theoretical analysis is carried out on the dynamic fracture regulation of rock bar.
从应力波随机到达的角度对均质岩石杆件动态断裂规律进行理论分析。
The general representations of analytical solutions with arbitrary index of self-similarity are deduced for axisymmetric dynamic fracture problems.
任意的自相似性指数分析解决方案的一般性的描述，推导了轴对称动态断裂问题。
A quantitative relationship between dynamic fracture toughness and temperature and loading rate has been obtained through thermal activation analysis.
通过热激活分析，可以获得定量描述动态断裂韧性、温度及加载速率之间的关系。
Dynamic fracture mechanics takes the effect of inertia into account and is widely applied in engineering structure and validity analysis of equipment.
动态断裂力学作为研究惯性效应不能忽略的断裂力学问题，在工程结构、设备有效性分析等方面得到了广泛的应用。
Rock has heterogeneity and discontinuity and rock's dynamic fracture property has been one of the hotspots and challenges in domestic and foreign studies.
岩石具有非均质性、不连续性，其动态断裂性能研究是国内、外研究的热点难点问题之一。
Based on the theory of dynamic fracture mechanics, the mechanism of crack-forming among shot holes in the directional split of rock by controlled blasting is expounded.
基于断裂动力学理论，文章论述了切缝药包定向断裂控制爆破炮孔间贯通裂纹形成的机理。
Microscopic features of dynamic fracture of tungsten alloys under shock loading, as well as their relationship with the ductility_brittleness transition were discussed.
并结合断口分析，探讨了钨合金在冲击作用下发生断裂的微观特征与韧脆转化间的关系及其物理本质。
With the compliance changing rate method, the crack initiation time and the dynamic fracture toughness of CFRP and GFRP laminates were obtained at two kinds of strain rates separately.
利用柔度变化率方法确定起裂时间，分别得到在两种加载速率下CFRP、GFRP层板的动态断裂韧性。
Because the process of rock broken is very complicated, there is a difference between the experimental data and theoretical result of expanding fissure by the present dynamic fracture theory.
由于岩石破碎过程非常复杂的，采用当前的动态断裂理论得出的裂纹扩展长度与实测值差异较大。
Fracture mechanism, initiation and propagation of cracks, and the control method of cracks in rock like brittle material under dynamic load are described in this paper.
本文主要论述了动荷载作用下岩石等脆性材料的断裂破坏机理、裂纹形成与扩展以及裂纹的止裂与控制等内容。
Objective: To investigate the effects of dynamic hip screw in the treatment of senile intertrochanteric fracture.
目的：探讨应用动力髋螺钉治疗老年股骨转子间骨折的临床疗效。
Objective: To study the clinical outcomes and the reasons of complications of treatment of peritrochanteric fracture of the femur with the dynamic hip screw(DHS).
目的：探讨动力髋螺钉（DHS）治疗股骨转子周围骨折的疗效及所致并发症的原因。
Aiming at the fracture problem of the square plansifter with 8 cells, the calculation for nature frequency and dynamic response of this structure is completed.
针对8仓高方平筛的断裂问题进行了固有频率和动力响应计算，在对计算结果分析的基础上，提出了两种结构改进方案，并对改进结构又进行了计算验证。
Objective To investigate the value of anterior cervical dynamic ABC plate in treatment of cervical spine fracture and dislocation.
目的探讨动态abc颈椎前路钛板在颈椎骨折脱位中的应用价值和治疗效果。
The static effect affects only ultimate fracture condition (the critical residual strength), while the dynamic effect affects damage evolution and residual strength degradation rate.
静态效应只影响最终断裂条件，而动态效应影响疲劳过程中的损伤演化规律和强度退化速率。
They are mainly concerned with the tensile and compressive behavior, energy absorption, dynamic impact, failure criterion and constitutive relation, creep, fatigue and fracture of these materials.
这些工作主要讨论了金属泡沫材料的拉伸、压缩、能量吸收、动态冲击、失效准则、本构关系、蠕变、疲劳和断裂等力学性能。
Femoral fracture; Dynamic hip screw; Internal fixation.
股骨骨折；动力髋螺钉；骨折内固定术。
In present research on fracture dynamic problems, Laplace or integral transformation was generally used, and numerical methods had to be adopted to solve the loop integral.
在现有断裂动力学问题文献中，一般采用拉氏变换与积分变换方法，得到的回路积分最后还需借助于数值方法求解。
In present research on fracture dynamic problems, Laplace or integral transformation was generally used, and numerical methods had to be adopted to solve the loop integral.
在现有断裂动力学问题文献中，一般采用拉氏变换与积分变换方法，得到的回路积分最后还需借助于数值方法求解。
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