| 1. | The skin factor is corrected and production forecasting formulas for 5 types of completions are manipulated 通过对表皮系数进行修正,推导出5种完井方式下的产能预测公式。 |
| 2. | Formula for prediction of general heterosis and interaction heterosis of single - cross offspring based on qtl effects were deduced 推导了基于qtl效应的单交后代普通杂种优势和互作杂种优势预测公式。 |
| 3. | Horizontal well production forecasting formulas need to consider not only anisotropism and borehole eccentricity , but also the skin factor during drilling and completion process 摘要水平井产能预测公式除了要考虑储层各向异性和井眼偏心距的影响因素外,还要考虑钻井和完井过程中产生的表皮系数的影响。 |
| 4. | After going to investigate in shanghai 、 beijing 、 tianjing 、 chengdu railway station and carefully browsing the design data of the collecting container of bw , this article ascertains a forecasting formula on wastewater quantity 本文通过在北京、上海、天津、济南、成都铁路局的现场调研及仔细查阅集便器的设计资料,得出旅客列车粪便污水的水量预测公式。 |
| 5. | Base on the effective permittivity forecasting formula of spherical core - shell type inclusions , the theory frame of optimum design of absorbing coating is constructed ; the optimization of single layer and double layers is done 基于核壳型球形颗粒的等效介电常数的预测公式,建立了吸波涂层优化设计理论框架,并对单层和双层吸波涂层进行了优化设计。 |
| 6. | First , the problem of electromagnetic field of ellipsoid type particle is studied , and effective permittivity forecasting formula of this particle is developed . base on the research , the effect of particle shape on effective permittivity is gained 论文首先对椭球形颗粒夹杂复合材料的电磁场问题进行了研究,得出了椭球形颗粒夹杂复合材料的等效介电常数的预测公式,在此基础上,研究了颗粒的形状对于等效介电常数的影响。 |
| 7. | The average thermal intensity inside the particle is obtained based on the solution of the temperature field inside the particle . the effective thermal conductivities for composites with different particulate geometry are calculated by using the prediction formula 在求解颗粒复合材料不同形状夹杂内温度场的基础上,进而求解其夹杂相的平均温度梯度,利用有效热导率的预测公式,对含不同形状夹杂的复合材料进行数值计算从而得到其有效热导率。 |
| 8. | Thermal residual stresses in short fiber reinforced metal matrix composites ( sfrmmc ) can reach a high level and have a significant effect on the mechanical properties of composites . in this paper , three dimensional elastoplastic finite element analyses were used to study the thermal residual stresses in sfrmmc and its effect systematically . with the interfacial property , fiber ' s orientation and reciprocity of fibers considered , the thermal residual stresses in - al2o3 / al - 5 . 5mg , - al2o3 / al - 5 . 5zn and - al2o3 / al - 12si alloy composites were calculated and analysed 本文在分析计算中综合考虑了界面性能、纤维位向以及纤维间相互作用的影响,分别采用单纤维模型、双纤维模型和斜向纤维模型,对- al _ 2o _ 3 al - 5 . 5mg 、 - al _ 2o _ 3 al - 5 . 5zn和- al _ 2o _ 3 al - 12si三种al合金基复合材料的热残余应力进行了计算和分析;对存在热残余应力时复合材料的应力?应变曲线进行了模拟;还基于能量等效原理的有限元方法,考虑了热残余应力及纤维位向的影响,推导了短纤维增强金属基复合材料弹性模量的预测公式。 |
| 9. | With the material dynamic constitutive equation including damage and the effect of stain rate the predictable formula about ballistic limit velocity of fiber composite target . secondly based on the damage feature about ceramic / fiber composite target caused by impact load , analysis model about defense performance of ceramic / composite material target is formed and the predictable formula about ballistic limit velocity is also given . lastly using the reflection and projectile theory of stress wave the paper discusses the design of ceramic / composite material target , optimizes the design of double layer ceramic / composite targets , gains optimal coefficient under certain area density and discusses the variety relationship of area density and thickness with optimal coefficient u nder some ballistic limit velocity 3 首先,分析了纤维类正交铺层复合靶板在冲击载荷作用下的损伤破坏机理,结合包含损伤和应变率效应的材料动态本构方程,建立了纤维复合材料板弹道极限速度的预测公式;其次,根据陶瓷/纤维材料复合靶板在冲击载荷下的破坏特点,建立了陶瓷/复合材料靶板抗弹性能分析模型,给出了弹道极限速度预测公式;最后,利用应力波反射和透射理论讨论了陶瓷/复合材料靶板的设计问题,对双层陶瓷复合靶板的优化设计进行了分析,给出了在一定面密度下的最佳优化系数,讨论了一定弹道极限速度下的面密度和厚度随优化系数的变化关系。 |
| 10. | The formula of the maximum lateral deformation has been proposed for tie - back wall when the anchors are embedded in unmoving soils or in rocks . this work has enlarged the application field of the previous deformation formula . examples from engineering practice prove that the values calculated with above formulas can meet the need of the pit engineering 将上面的变形计算公式做了推广,提出了锚撑挡墙最大侧向位移的预测公式(锚杆锚固不可移动的土层或岩石中) ,工程实例表明,利用该式预测的变形值可以满足工程的需要。 |