Based on 3D nonlinear FE(finite element)analyses of T-stub steel connections of high strength friction grip bolt,this paper probes into the effects of factors,such as the pitch of bolts and the thicknesses of T-stub flange,column flange and web,on the initial connection stiffness of joints as well as the ductile failure and contact state of beam.
通过对高强螺栓T型钢连接节进行三维非线性有限元分析,研究和探讨了螺栓间距,T型钢翼缘、柱翼缘及柱腹板厚度等因素对于节点初始连接刚度、梁的延性破坏以及本身接触状态的影响。
The results indicate that when cutting height increase,the plastic failure fields augment,the top-coal break up seriously,and the odds of rib spalling and roof fall increase,so we should adopt corresponding prevention measures.
当机采高度增大时,煤体塑性破坏区域增大,顶煤破碎严重,同时煤壁片帮冒顶的几率增高,应增加相应的防治措施。
The paper recounts the characteristics of beam-to-column connection failures of steel construction from welding quality,scale of plastic hinge and pressure distribution of beam flange and analyzes the causes of brittle failure occurrence.
从焊接质量、塑性铰范围、梁翼缘应力分布3个方面阐述钢结构梁柱节点脆性破坏的形态特征,并分析了钢结构梁柱节点发生脆性破坏的原因,且从节点连接强度和采用3种新型节点两个方面简要阐述了保证节点强度的措施,为钢结构梁柱设计与研究提供参考。
Based on the discussion properties of brittle failure of frozen soil, requirements on dimension of sample for the definition of fracture toughness under linear elastic and plane strain condition are analyzed in this paper.
在讨论冻土脆性破坏特征的基础上,分析了线弹性适用条件及平面应变断裂韧度测试对试样尺寸的要求。
Aiming at brittle failure of hard rock(taking limestone for example),true triaxial and acoustic emission experiments are adopted to study the mechanical characteristics,deformation and failure mechanisms,characteristics of acoustic emission(AE) activities and law of energy release.
针对硬岩的脆性破坏问题,利用真三轴和声发射(AE)试验系统研究了灰岩试样在不同应力路径和应力水平下的力学特征与变形破坏机理、AE活动特征及能量释放规律。
But the computer virus, with its infectivity and destructibility, is playing havoc with our normal lives.
知识经济时代,人们的生产和生活已经离不开计算机及计算机网络,但计算机病毒却以它极强的传染性和严重的破坏性危及着我们的正常生活。
The fracture toughness(G_(ic))and fracture morphology of polyphenylene suifide(PPS)toughened with high performance thermoplastic bisphenol A polysulfone(PSF),polyetherketone with cardo group(PEK-C)have been studied.
研究了高性能热塑性树脂双酚 A 型聚砜(PSF)、酚酞型聚醚酮(PEK-C)增韧聚苯硫醚(PPS)的破坏韧性和破坏形态。
Objective: Our aim was to investigate the effect of 4 and 60℃ caloric test on fracture toughness of the adhesive resin during dentin bond.
方法 :选用临床常用的粘接性树脂 [如Super bondC&B (SB)和Panavia 2 1(PV)等 ]为对象 ,采用破坏韧性试验的方法 ,分别对冷热循环试验前后各粘接性树脂的破坏韧性加以测试比较 ,并观察其粘接面的破坏方式变化。
Objective:Our paper was to investigate the effect of inorganic filler contents on the adhesive strength and fracture toughness of adhesive resins on adhesion to dentin.
目的：探讨无机填料对粘接性树脂粘接强度与破坏韧性的影响，同时对４℃和６０℃冷热循环试验的影响进行探讨。
Overhead Vertical Pier Structures Three-dimensional Numerical Analysis of Plastic Failure
架空直立式码头结构三维数值塑性破坏分析
Analysis on Inhibiting Factors of Inrushing Plastic Failure Caused by Confined Water in Foundation Pit
承压水引发基坑突涌塑性破坏抑制因素分析
The results show that the great plastic yield areas and pull failure areas are formed in the base structure with caved area extends.
结果表明,随矿岩崩落开采,崩落区下方岩层出现较大范围的塑性破坏区和拉破坏区。
A tension member may fail by plastic yielding.
拉伸元件可能由于塑性屈伏而破坏。
testing method of resistance to damage by flexing for rubber or plastics coated fabric
橡胶或塑料涂覆织物耐屈挠破坏性能的测定法
Standard test method for time-to-failure of thermoplastic pipe under constant internal pressure
GB/T6111-1985长期恒定内压下热塑性塑料管材耐破坏时间的测定方法
"Analysis destroys wholes.
“分析破坏完整性。
Rubber or plastics coated fabrics-Determination of resistance to damage by flexing(Dynamic method)
GB/T12586-1990橡胶或塑料涂覆织物耐屈挠破坏性能的测定动态法
It is difficult to control the deformation of the extremely soft rock roadway which has the character of continuous plastic deformation by using the single supporting mode.
极软岩巷道具有持续塑性变形破坏的特征,单一支护方式难以控制。
The Performance Research of Polymer Materials Filled and Modified by Coal Gangue;
煤矸石填充热塑性聚合物复合材料的制备及断裂破坏行为研究
Research of Frames Collapse under Blast Load Using Plastic Limit Theory;
爆炸冲击波作用下框架结构的塑性极限破坏研究
Elastoplastic Seismic Response and Strength Fracture Anaysis of Space Lattice Structures under Multi-Support Excitation;
多点输入下大跨空间网格结构弹塑性地震响应及强度破坏分析
Study on Failure Mechanism of Reinforced Concrete Frame Structure's Plastic Hinge by Rare Earthquake Action
大震下钢筋混凝土框架结构塑性铰破坏机制研究
Experimental investigation on failing modes of the yield hinge region in the HRB500 frame columns
HRB500钢筋混凝土框架柱塑性铰区破坏形态的试验研究
Research on Post-failure Mechanical Properties of Brittle-plastic Rocks by OOFEM Coupled with IEM;
脆塑性岩石破坏后区力学特性的面向对象有限元与无界元耦合模拟研究
Griffith criterion of brittle
格里菲斯脆性破坏准则
destructive esp. to citrus.
尤其对柑橘树有破坏性。
non-destructive cable locating device
非破坏性电缆探测器