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flexural     
相关语句
  弯曲
     Durability and Service Life Prediction of Concrete Subjected to the Combined Action of Freezing-Thawing, Sustained External Flexural Stress and Salt Solution
     冻融循环与外部弯曲应力、盐溶液复合作用下混凝土的耐久性与寿命预测
短句来源
     The Flexural Stress Concentration Coefficient of Medium Diesel Crankshaft
     中速柴油机曲轴弯曲应力集中系数
短句来源
     Large Deformation Theory for Flexural Motions of Thin Elastic Plate
     弹性薄板大变形弯曲运动理论
短句来源
     The test and calculation for the flexural strength of carbon fibre laminate composites
     碳纤维复合材料层压板弯曲强度的测试与计算
短句来源
     On the Finite Element Analysis and the Problem of Flexural Strength for Semitrailer Frame
     半挂车车架的有限元分析及其静弯曲强度储备问题
短句来源
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  抗弯
     Flexural Strength of Al_2O_3/Cr_3C_2/(W,Ti)C Ceramic Composites
     Al_2O_3/Cr_3C_2/(W,Ti)C陶瓷抗弯强度的研究
短句来源
     Vicker′s hardness, Young′s modules, compressive strength, flexural strength and fracture toughness are 3.3~5.0 GPa, 289 GPa, 785 MPa, 375 MPa, and 7.0 MPa·m~(1/2), respectively.
     材料的Vicker硬度为3.3~5.0GPa,弹性模量为289GPa,抗压强度为785MPa,抗弯强度为375MPa,断裂韧性为7.0MPa·m1/2。
短句来源
     The flexural strength, fracture toughness and vickers hardness at room temperature are 470 MPa, 5.12 MPa·m~(1/2) and 1 060 Hv, respectively.
     其维氏硬度为1 060,抗弯强度为470 MPa,断裂韧性为5.12 MPa·m~(1/2);
短句来源
     The flexural strength and fracture toughness of ZrB_2/SiC/ZrC composite which were produced successfully:ZrB_2+20vol%SiC are 470MPa and 5.21 MPa? m 1/2 ,ZrB_2+25vol%SiC are 520MPa and 5.26MPa?
     所制备的ZrB_2/SiC/ZrC体系复合材料,ZrB_2+20%SiC抗弯强度和断裂韧性分别是470MPa和5.21MPa·m~(1/2)、ZrB_2+25vol%SiC分别为520MPa和5.26MPa?
短句来源
     But at 1900℃, the flexural strength of the 70W_2B_5/C composite has a maximum value of 853MPa.
     在1900℃烧结的70W_2B_5/C复合材料抗弯强度达到最大853MPa。
短句来源
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  受弯
     The influnce of the axial load of bearing capacity on nomal section of unbonded prestressed concrete flexural members are checked by the tests with 4 unbonded prestressed concrete beams of 200mm×250mm×4000mm.
     通过4根200mm×250mm×4000mm等比例无粘结预应力钢筋混凝土梁正截面承载力的试验研究,论证了轴向力对预应力混凝土受弯构件正截面承载力的影响。
短句来源
     Application of Monte Carlo-JC method to the reliability assessment of flexural capacity of RC beams strengthened with FRP
     应用Monte Carlo-JC法评估FRP加固RC梁受弯承载力可靠度
短句来源
     Based on the stress distribution assumption of Cross Section,approximate formula for calculating the flexural capacity of the composite member with prestressed concrete pipe pile and pile core concrete is proposed theoretically.
     本文基于管桩──桩芯砼组合构件截面的应力分布假设,从理论上探讨并提出了预应力砼管桩──桩芯砼组合构件受弯承载力的近似计算公式,可供工程界设计时参考应用。
短句来源
     Crack control and calculation of the PPC flexural members
     PPC受弯构件裂缝计算与控制
短句来源
     Finite element analysis of flexural bearing capacity of pre-stressed AFRP tendon concrete beam
     预应力AFRP筋混凝土梁受弯承载力有限元分析
短句来源
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  抗折
     The relationship between the properties and microstructure of SiC_p/Si_3N_4 matrix composite with Al_2O_3 and CeO_2 as additives prepared by gas pressure sintering (GPS) was investigated. The effects of SiC particle contents on fracture toughness, flexural strength, Rockwell hardness and microstructure of SiC_p/Si_3N_4 composite were studied in detail.
     研究了添加Al_2O_3和CeO_2的气压烧结SiC_p/Si_3N_4复合材料的性能和显微结构之间的关系,详细探讨了SiC颗粒含量对SiC_P/Si_3N_4材料抗折强度、断裂韧性、Rock well硬度和显微结构的影响。
短句来源
     The experimental results indicate that the relative high-performed mullite materials were obtained when fired at 1500℃ and doped 5mol% Y2O3,with the porosity 0.53%,water absorption 0.19%,flexural strength 128.3MPa,mullite content 80.8%;
     结果表明:当到1500℃时,添加物质的量分数为5%Y2O3时,所得试样的显气孔率和吸水率最小,分别为0.53%和0.19%,抗折强度为128.3MPa,相应的莫来石含量达到80.8%;
短句来源
     By gelcasting, Bulk density of green bodies was 3.11g/cm~3, flexural strength is 14MPa.
     凝胶注模成型后的坯体具有3 11g/cm3的体积密度和14MPa的抗折强度。
短句来源
     The effect of the layer-built location, number and thickness of the steel fibers scattered over concrete on its flexural strength is studied experimentally.
     试验研究了钢纤维在混凝土中的层布位置、层布数及层布厚度对这种层布式钢纤维混凝土抗折强度的影响 .
短句来源
     The apparent densities of the SiC ceramic foams are controlled between 0.4 g/cm~3 and 1.3 g/cm~3,with corresponding compressive strengths ranging from 8 MPa to 50 MPa and flexural strengths from 3 MPa to 30 MPa.
     SiC陶瓷泡沫表观密度可控制在0.4~1.3 g/cm3,相应的抗压强度为8~50 MPa、抗折强度为3~30 MPa.
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  flexural
The columns under low cyclic lateral loading mainly failed in the flexural-shear mode.
      
Four-point bending flexural tests were conducted to one full-size reinforced concrete (RC) beam and three full-size RC beams strengthened with carbon fiber plates (CFPs).
      
The experimental results showed that the consumption of CFP had significant effects on failure modes and the flexural capacity.
      
The flow by a plane stream of an ideal liquid around a cylindrical shell of zero flexural stiffness (a soft cylindrical shell), or a gas bubble on the boundary of which forces of tension act, was studied in [1-6].
      
We consider the flow, around a flexible cylindrical shell which possesses a flexural stiffness and at the same time admits large displacements, by a plane system of an ideal incompressible liquid.
      
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In this paper the bending of a simply supported rectangular orthogonal anisotropic plate subjected to distributed moment on edges has been solved. In the work, the anthor used a series in the form sin to denote the general deflection of the plate. To facilitate the derivation, the case when the given plate is acted on by dis tributed moment on one edge bas been firctly investigated. Due to different combinations of elastic properties of the plate, the analysis has been done under three cases; namely, where D_1,...

In this paper the bending of a simply supported rectangular orthogonal anisotropic plate subjected to distributed moment on edges has been solved. In the work, the anthor used a series in the form sin to denote the general deflection of the plate. To facilitate the derivation, the case when the given plate is acted on by dis tributed moment on one edge bas been firctly investigated. Due to different combinations of elastic properties of the plate, the analysis has been done under three cases; namely, where D_1, D_2, are flexural regidities in principal elastic diretions and D_3 is related to tortional rigidity of the plate. The general case wben the plate is subjected to distributed moment on four edges may be obtained by suitable supperposition. For all cases, result expressions for the deflection in the center of the plate, for the turning angle of all edges and for the bending moment in two principal elastic directions in the center of the plate have been worked out.

在此文中,边端受力矩作用,四边简支的矩形正交各向异性板的弯曲问题获得了解决。在分析过程中,作者应用了级数去表示板的挠度。为使推演工作方便起见,首先研究了这块板只在一个边上受到分布力矩的作用的情形。由于板的弹性性质不同的组合,分析了三种情况,即当其中D_1及D_2为板的弹性主方向的抗挠刚度而D_3乃与抗扭刚度有关。对于板四边受分布力矩的一般情况可适当地利用叠加原理而得到。在所有情形中文中列出了板中点的挠度,四边的转角及板的中点在弹性主方向的弯矩等计算式。

In this paper, by using the assumptions of average deflection, average rotation and average shear deformation, the differential eqs. of the flexural vibrations of the orthotropie plates taking into account the effect of shear deformation and rotatory inertia are derived. The formula for calculating the freqijncies of rectangular plates with simply supported edges is obtained. If let the length of one edge-voo, then this formula becomes the freqency formula of Timoshenko's beam. Futhermore, the condition...

In this paper, by using the assumptions of average deflection, average rotation and average shear deformation, the differential eqs. of the flexural vibrations of the orthotropie plates taking into account the effect of shear deformation and rotatory inertia are derived. The formula for calculating the freqijncies of rectangular plates with simply supported edges is obtained. If let the length of one edge-voo, then this formula becomes the freqency formula of Timoshenko's beam. Futhermore, the condition of several concentrated masses on the plates is considered. The approximate formulas for calculating freqenciesin this condition are gained by means of the method and the Rayleigh-Ritz's method, and are applied to calculate the freqencies of the ship's double bottom in engine room. From the example, we can see that the effect of shear deformation on the freqeneies of the double bottom in engine room is very large. If we neglect the effcet of shear deformation, i.e. the classical theory of flexural vibrations of plates is used, the calculated values of the 1st freqeney of the double bottom in. engine room are larger than the experimental values about 20%. However, by using the method of present paper, taking into account the shear deformation, these errors fundamentally can be corrected.

本文用平均转角、平均挠度和平均剪切变形之假设,导出了正交异性板在虑及剪切变形和剖面转动惯量的影响下之横振动微分方程组,并求得了四周简支矩形板在计及剪切和剖面转动影响下之固有频率公式。如令平板一边的边长→∞,即得铁木辛柯(Timoshenko)梁的频率公式。进一步,我们讨论了板上具有若干集中质量的情况,用加辽尔金法和雷利-里兹(Rayleigh-Ritz)法,求得了固有频率的近似公式,并将其用于计算船舶机仓双层底(结构上之正交异性板)的振动问题。从所举实例可见,剪切变形对船舶双层底的固有频率影响很大。若不计剪切影响,即用经典的平板振动理论,则算得之机仓双层底第一固有频率比实验值大20%左右。但用本文之方法计及剪切变形的影响后,这一误差基本上可得到校正。

The phosphonitrilochloride trimer (PNC12)3 was synthesized. Condensation resins and molded asbestos plastics have been prepared from (PNCl2)3 and dihydric phenols or (PNCl2)3 and the mixture of phenol and dihydric phenols. The oxidation decomposition temperature of condensation resins was determined to be 275-280℃. The water absorption of the molded plastics was found to be 0.37-1.0% by weight, the flexural strength, 482-772 kg/cm2, but impact strength only 3.00-5.25 kg-cm/cm2.The molded plastics have...

The phosphonitrilochloride trimer (PNC12)3 was synthesized. Condensation resins and molded asbestos plastics have been prepared from (PNCl2)3 and dihydric phenols or (PNCl2)3 and the mixture of phenol and dihydric phenols. The oxidation decomposition temperature of condensation resins was determined to be 275-280℃. The water absorption of the molded plastics was found to be 0.37-1.0% by weight, the flexural strength, 482-772 kg/cm2, but impact strength only 3.00-5.25 kg-cm/cm2.The molded plastics have specific resistance to flame, and the water resistance was certainly improved, as compared to the phosphonitrilochloride polymers.

简略介绍氯化磷腈三聚体(PNCl_2)_3的制法。以(PNCl_2)_3与二元酚,或(PNCl_2)_3与一元酚、二元酚混合物为原料时,可制成缩聚树脂及石棉模压塑料。缩聚树脂的热氧化分解温度约为275—280℃。模压塑料的吸水增重达0.37—1.0%;抗弯强度是482—772公斤/厘米~2,与酚醛石棉模压塑料相似;抗冲强度是3.00—5.25公斤-厘米/厘米~2,比酚醛石棉模压塑料为低。 模压塑料具有特别耐燃自熄的特点,并且对氯化磷腈衍生物的耐水性而言,也获得一定程度的改善。

 
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