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压缩载荷
    Mechanical model of grape under compression load
    葡萄果实在压缩载荷作用下的力学模型(英文)
    The experiment on force-fit hard-aluminum alloy LY12CZ sheet under the 6 mmthickness with 3. 1 % force-fit level and under compression load levels of 35%σ0.2, 45%σ0.2,and 55 %σ0.2,by Moire's method is discussed. The study shows force-fit is only fit for lowlevels of compression load under 3.1% force-fit level.
    借助于莫尔方法,对厚度6mm、干涉量3.1%情况下的航空用硬铝合金LY12CZ板销钉干涉配合预应力及其在35%σ0.2、45%σ0.2、55%σ0.2的压缩载荷情况下的变化规律进行实验研究.研究显示,在3.1%干涉水平下,干涉配合只适宜在中等以下的压缩载荷环境中工作;
    Biomechanical characters of human mandible under compression load
    人下颌骨在压缩载荷下的生物力学性质
    Analyzes and calculates the stress and distortion for the structure of car body under vertical load case, lengthwise stretch load case, lengthwise compression load case, air pressure power load case, operating load case in detail.
    详细分析了垂向载荷工况、纵向拉伸载荷工况、纵向压缩载荷工况、气动载荷工况和运用状态垂向载荷工况下车体结构的应力和变形。
    Horizontal axial loading test of Model CJ30-18 articulated mast is conducted, the strain of main component partsare measured. The static compression load is 1000kN, the absolute value of the maximum compressive stress is 127MPa,lower than the yield limit (240MPa) of the mast material, thereby the compression strength of the mast is checked.
    对CJ30-18型采油井架进行了卧式轴向加载型式试验,并电测了主要构件的应变,静压缩载荷最大为1000kN,最大的压应力绝对值为127MPa,低于井架材料的屈服极限(240MPa),这就考核了井架的抗压强度。
    Under compression ,the force fit is also effective, but in order to achieve stable prestressing, the level of compression load needs to be lower in contrast with tensile load of same force fit level.
    在压缩载荷下 ,干涉配合也是有效的 ,但为得到稳定的干涉预应力场 ,同样干涉水平下 ,压缩载荷要比拉伸载荷低
    砄bjective:To study the biomechanical characters of human mandible under compression load and to deduce the constitutive equation.
    目的 :研究下颌骨在不同压缩载荷下的生物力学性质 ,建立下颌骨在压缩载荷下的本构方程。
    Conclusions:Strain rate and bone mineral density are important factors for the biomechanical characters of human mandible under compression load.
    下颌骨在压缩载荷下的本构方程为σu=1798.87ρ- 1 .1 7ε0 .0 83ε0 .82 (P<0 .0 1)。 结论 :应变率和骨密度是影响下颌骨压缩生物力学性质的重要因素。
    According to the basic failure modes in 2-Directional (2-D)carbon/carbon composite laminates,namely matrix cracking,delamination,fiber breakage and debonding,the research performance of the failure mechanisms in family and abroad under tensile load,shear load and uniaxial compression load have been summarized respectively. Some failure analysis methods at present for C/C laminated composite have also been given in this paper,which would be of general significance to its mectanical capacity.
    根据二维 ( 2 - D)炭 /炭 ( C/C)复合材料存在的几种基本的失效模式 ,即基体开裂、分层 ,纤维断裂与脱粘 ,分别对其在拉伸载荷、剪切载荷及单轴压缩载荷下的失效机制的国内外一些研究成果进行综合评述 ,并给出了目前主要采用的一些失效分析方法 ,对 2 - D叠层 C/C复合材料力学性能的研究具有普遍意义
    (3)Under the same axial compression load,the dislocation of the pedicle screw in AFC group was apparently less than that in fixation group.
    (3 )在相同轴向压缩载荷作用下 ,AFC组椎弓根钉受力移位较内固定组明显减小。
    In the wake of the compression load being added, the deformation rate or the strain of the AZ91D magnesium alloy samples increases and the compressing stress decreases clearly.
    随着半固态压缩载荷的提高,AZ9lD镁合金试样变形的速度增加,应变速度增大,应力下降速度加快;
    (3) A positive liner correlation between the indices of biomechanical properties and exercise intensities within the groups without estrogen administration had been obtained, while a positive liner correlation between the indices of maximal compression load of L3 and exercise intensities within groups with estrogen administration also been obtained.
    (3)去卵巢后未补充雌激素组的运动强度与两项力学指标值均有线性正相关关系; 去卵巢后补充雌激素组的运动强度与L3最大压缩载荷成线性正相关关系.
    The stress distribution and deformation of grape under compression load by two rigid plates were studied.
    研究了葡萄在压缩载荷作用下的应力分布和变形。
    The tension of grape skin under compression load was analyzed numerically,using Runge-Kutta iteration method.
    利用R unge-K u tta方法,进行数值求解,得到了在压缩载荷作用下葡萄的张力。
 

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