New concept of two critical angles was suggested to fracture analysis of a slanted crack. A discussion was especially made of the material choice for small slant angle experiment.
本文提出并应用两个临界角的概念对斜裂纹断裂问题,特别是有关试验的选材问题进行了讨论;
Fracture mechanics. A technique of fracture analysis used to determine the stress level at which preexisting cracks of known size will propagate, leading to fracture.
一门断裂分析技术,用于确定已知尺寸的预先存在裂纹扩展并导致断裂的应力水平。
These fundamental solutions may be applied to linear elastic fracture analysis and consequently they provide a new and effective approach to solve this kind of problem.
这些基本解可以用于线弹性断裂分析,为求解这类问题提供了新的有效途径。
Fully considering the speciality of soil nailing, a rather precise method of stability analysis of soil nailing based on general fracture surface is presented.
充分地考虑土钉支护的特殊性,建立了一个比较精确的基于一般破裂面的土钉支护稳定性分析方法。
Applying theory of linear elasticity fracture mechanics to the analysis of high strength concrete (HSC) compress shear member's cracking stress, a corresponding model is established in this paper.
把线弹性断裂力学的理论应用到高强混凝土压剪构件的开裂强度分析中,建立相应的计算力学模型。
The paper makes a systemic and thorough studies to the structure fracture in Liaohe Basin by using the theory and method of structure analysis.
应用构造分析理论和方法,对辽河盆地构造断裂,进行了系统、深入的研究。
The fracture cause of a rolling ring of a rotary kiln was studied through a stress analysis and some improvements were proposed.
通过对回转窑滚圈的应力分析,探讨了其断裂的原因,并提出了相应的改进措施。
In this paper, an engineering assessment method of elastic-plastic fracture based on finite deformation analysis of complex structures. or a modified COD -design equation, presented forward is put.
文章在有限变形分析基础上建立了对复杂结构进行弹塑性断裂评定的工程方法,用以修正COD设计曲线。
A stress analysis was made on longitudinal and transverse, members of a truck frame, and the reasons of fracture of members in service were isolated.
本文从车架纵梁和横梁各个方面引起的应力分析车架断裂的原因。
On the basic of macro-micro analysis of fracture a new fatigue-creep interaction map called first type of interaction map was constructed.
在宏观与微观分析相结合的基础上建立了第一类断裂特征图。
Based on the fractal theory and computer images analysis technique, a MATLAB program which computes box fractal dimension of material fracture was designed.
基于分形理论和计算机图像处理技术,编制计算材料断口形貌计盒分形维数的MATLAB程序。
A further analysis of the fracture zone on future risk region evaluation was given at last.
根据其地震活动特征等分析,对断裂带未来危险性作了评估。
The fracture of blades made of a directionally solidified superalloy was analyzed. The failure mode and cause were studied in virtue of fracture observation and metallographic structure analysis.
对定向凝固合金叶片的断裂故障进行了分析,在断口观察与金相组织分析的基础上,对叶片的失效模式与失效原因进行了研究,并提出了预防该类故障发生的措施。
Through the analysis of mechanical properties of the specimens, the relationship between the fracture strength and bulk density was characterized in a linear equation.
通过对试样力学性能的分析可知,推导出了材料断裂强力与体积密度的关系式。
The cracks on blades made of a directionally solidified superalloy were analyzed. The failure mode and cause were studied in virtue of fracture observation and metallographic analysis.
对定向凝固合金叶片的裂纹进行分析,在断口观察与金相组织分析的基础上,对叶片的失效模式与失效原因进行研究,并提出预防该类故障发生的措施。
Methods a review is made on the analysis of 26 patients with internal fixation of fracture of humeral shaft complicated by radial nerve injury.
方法对肱骨干骨折内固定术并发桡神经损伤26例进行回顾性分析。
Based on the failure analysis of reinforced concrete and the fracture behavior of concrete as a type of quasi-brittle materials, a model of matrix crack with bridging bar is proposed in this paper.
基于钢筋混凝土的破坏分析,结合混凝土类准脆性材料的断裂特性,本文提出了强化筋桥联基体裂纹力学分析模型,在该虚拟裂纹端部存在粘聚力分布,而强化筋在桥联裂纹处具有与基体脱离的部分段。
MAIN OUTCOME MEASURES: the primary analysis examined the association between hospitalization for a subtrochanteric or femoral shaft fracture and duration of bisphosphonate exposure.
主要转归指标:主要分析调查了因股骨转子下骨折或股骨干骨折住院与双膦酸盐暴露时间之间的关联性。
A further theoretical analysis reveals that the basic mechanical characteristics of the nominal fracture energy agree with the observed macroscopic experimental phenomena of concrete.
进一步的理论分析表明该名义断裂能的基本力学特征与混凝土宏观实验现象一致。
The cause of fracture of a water supply valve used was analyzed by macrophoto, chemical composition analysis, metallography and mechanical performance.
针对使用中的自来水阀体断裂破坏,进行了宏观形貌、材质化学成分、金相组织、力学性能等失效分析工作。
A fracture dynamics analysis is given to an accident on a gudgeon link of the miter gate of a dam.
对某水坝船闸人字门拉杆断裂事故进行断裂动力学的定性与定量分析。
After summing up the results of fracture analysis and practical statistics, the critical crack size of the cylinder liner is determined. It may serve as a theoretic...
综合断裂分析和运用统计的结果,给出了裂纹活塞运用的临界尺寸,从而为延长柴油机的使用寿命提供了理论依据。
The microscopic scanning of the fracture shows that the fracture is not a brittle one, and the qualitative analysis of the inclusions points to the absence of nitrides and carbonitrides in the incl...
通过断口的微观扫描及夹杂物定性分析发现,断口未出现脆性断裂的特征以及夹杂物分析未发现有氮化物和碳氮化物存在。
Furthermore, not only a field of stress in order to make the analysis of the fracture mechanics is given and but also the reliable data for designing the similar rollers one provided.
为进一步对它进行断裂力学分析提供了足够的应力场,也为同类型轧辊的设计提供了可靠依据。
A recent meta-analysis of 14 studies looked at the typical red flags of back pain to see which ones actually truly increase the risk that the patient will have a fracture or malignancy.
最近的一个纳入14项研究荟萃分析,调查了在背部疼痛的危险信号中,哪些真正增加了患者发生骨折或者恶性肿瘤的风险。
The failure analysis consisted of a strength analysis, a macro-fracture surface analysis, a metallurgical microscope and scanning electron microscope analysis.
分析包括结构强度分析、宏观断口分析、金相分析和扫描电镜分析等。
In the analysis of the structural integrity of grain, study on deformation and fracture characteristics was always a very active research subject.
在药柱结构完整性分析中,形变和断裂特性研究一直是十分活跃的研究课题。
Reliability design is a kind of new design method. It has been found applications in many aspects, such as structure design, strength analysis, life estimate, and fracture safety analysis, etc.
可靠性设计是一种新的设计方法。这种方法在许多方面得到应用,如结构设计、强度分析、寿命估算和断裂安全分析等。
A new three dimensional model for the analysis of transient ground water now in a stochastic fracture network of a fractured rock mass is presented in this paper.
介绍了在岩体三维随机裂隙网络中进行非稳定地下水渗流分析的数学模型和方法。
A new three dimensional model for the analysis of transient ground water now in a stochastic fracture network of a fractured rock mass is presented in this paper.
介绍了在岩体三维随机裂隙网络中进行非稳定地下水渗流分析的数学模型和方法。
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