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    ON ERROR TREND PROBLEM OF NATURAL FREQUENCY CALCULATED BY RITZ METHOD AND FINITE ELEMENT METHOD
    里兹法以及有限元法计算固有频率的误差趋势问题
    An Experimental Photoelastic Isochromatic Fringe Pattern Simulated with Stresses Calculated by FEM
    有限元计算应力模拟实验光弹性等差条纹图
    Based on the SMAC method used in the solution of Newtonian fluid motions, this paper presents a simulation model of the visco-elastic fluid motions whereby the initiation of Couette flow and the motion in a box with periodic motion on the lid are calculated.
    本文在求解牛顿流体运动的SMAC方法的基础上,建立了粘弹性流体运动的数值模型,并在此基础上计算了粘弹性流体的Couette起动流问题和顶盖周期性运动导致的方腔流动问题。
    Effective shear moduli were calculated based on the measured sound velocities of LY12 aluminum under shock loadings from 20-70GPa.
    根据本文测量的 LY12铝在20-70GPa冲击压缩下的高压声速数据,计算了它的有效剪切模量,并与冲击动力学中广泛使用的SCG本构模型的计算结果进行比较。
    The pressure properties of ablative plasma in capillary and the plasma jet were experimental investigated, also the thrust of pulse plasma jet was tested and calculated by the thermodynamic parameters of plasma jet in this paper.
    利用测压装置实验研究了毛细管内消融等离子体及其射流压力随时间的变化规律,并利用测力装置对脉冲等离子体射流产生的推力进行了初步的测试,采用推力计算公式结合等离子体射流的动力学参数对射流的推力进行了计算
    The calculated formula of ultimate strength of shearing stress with experimental determination for metallic materials
    金属材料剪应力强度极限的计算公式
    All the calculated results show that: the code LS3D can be used for calculatingthe detonation wave propagation in different explosive initiated by different way. Itcan deal with different shape, multi-medium explosive.
    本文计算结果表明,计算编码LS3D可以对不同起爆方式下不同形状炸药中三维爆轰波的传播进行较准确的计算,适于处理不同形状、多介质的炸药装置中三维爆更波传播的匕方法研究爆轰传播问题,是工程计算的一种有力工具。
    In the range from critical temperature upto 4000~5000K, 0 upto 90~200GPa, the average deviation of the calculated volumes (ADV) was within 1.0%~3.5%, 0.7%~3.0%, respectively.
    在临界温度以上到4000~5000K、零压到90~200GPa范围内,计算体积的平均偏差分别为1.0%~3,5%和0.7%~3.0%。
    RVE is calculated with the finite element method and the Mohr-Coulomb damage rules are employed to analyse the calculation result.
    本文还对体胞单元进行了有限元计算,并应用莫尔——库仑破碎准则对计算结果进行分析。
    According to the modified model, the detonation parameters are calculated and analyzed in the reaction zone of PO spray in air and the CJ plane.
    对已有模型进行了改进,计算和分析了PO云雾爆轰的反应区和CJ面上的爆轰参数。
    Dissipative ,Taylor , shear and integral scale are calculated ,and the relationship between them and vertical locations in turbulent boundary layer are obtained.
    同时计算了耗散尺度、泰勒尺度、剪切尺度和积分尺度等特征量,并给出它们沿平板湍流边界层法向位置的变化规律。
    Besides, ANSYS cannot provide the transformation relationship between the stress calculated by ANSYS and the Cauchy stress.
    ANSYS计算得到的应力与现实位形下的应力,即Cauchy应力,不存在转换关系。
    In this paper the hydrodynamic coefficients of single cylinder and tandem cylinder (L/D=3,4,5) are analysesed in detail, speculated different characters of hydrodynamic coefficient at Reynolds numbers, and calculated revised coefficient, moreover the reasons of calculation error are analysesed
    对孤立圆柱和串列柱在不同间距比(L/D=3,4,5)时水动力参数的变化本文作了详细分析,推测出高雷诺数时串列双圆柱的稳态及脉动压力分布、稳态阻力及脉动阻力、稳态升力及脉动升力、Str数与亚临界雷诺数时不同的特性,计算出修正系数,并分析了误差产生的原因。
    We also calculated the yield strength of Tungsten under quasi-isentropic loading. The calculation result is larger than the reference data under shock compression, it shows the dynamic yield strength is dependent on the loading rate.
    计算了准等熵加载下材料屈服强度的变化并与文献上冲击加载下的屈服强度进行了对比,结果为准等熵加载下材料的屈服强度明显大于冲击加载下的屈服强度,这说明材料强度的变化与加载速率有关。
    At last, numerical simulation methods were used to predicting the surface heat transfer coefficients of NASA-MarkII and NASA-C3X guide vanes and calculated results is compared with experimental date.
    最后采用数值模拟方法对C3X和MarkⅡ导向叶片的气动特性和换热特性进行数值计算,并与实验结果进行了对比。
    Based on Griffith's maximum energy release rate fracture criterion (MERRFC), the energy release rate in an arbitrary direction is calculated. A general expression for MERRFC is derived so that it can be used in any case of mixed mode fracture.
    本文的工作是在Griffith最大能量释放率断裂准则基础上,通过计算任意方向上的能量释放率,确定最大能量释放率的数值和其所在方向,推导出最大能量释放率断裂准则的一般形式,使之可以应用于任意复合型断裂问题.
    A series of transcendental equations are obtained, from which the critical loads can be calculated by numerical methods.
    本文导得了可求解轴对称整体失稳和局部失稳临界载荷的超越方程,用数值计算的方法可算得临界载荷的最小值.
    The dynamic coefficients are calculated using the formula deduced from Navier-Stokes equation.
    动力系数根据由Navier-Stokes方程导出的公式计算
    By means of the method in works [1], the stress σ_(ij) the residual stress σ_(ij), the intensity of stress σ_i and intensity of residual stress σ_(ij) in elastie-power hardening rotating disk are calculated.
    本文利用文[1]介绍的方法计算了弹性—幂强化材料旋转圆盘的应力σ_(ij)、残余应力σ_(ij)~r、应力强度σ_i以及残余应力强度σ_i~r。
    A comparison between calculated buffet boundary after the present method and measured in flight test for the aircraft F-86A shows a good agreement.
    Eberle的解全速位方程的有限元素法给出,按本文方法计算出F-86A 飞机的抖振边界与相同雷诺数下飞行试验所得结果符合得很好。
 

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