热传递系数 coefficient of heat transfer; coefficient of thermal conduction; overall heat transfer coefficient; thermal tra fer coefficient; thermal tra mi ion coefficient; thermal transfer coefficient; thermal transmission coefficient
Because of this , this text has described the method of routine deterministic analysis which is include mainly : coefficient transmission and bishop method and also described the basic principle of reliability theory , the method and the application that mainly conclude monte - carlo method , reliability index method and statistical analyses , and according to the research on the two method through examples it is suggested that we should adopt reliability method besides deterministic analysis in slope stab ility analyses . for those two methods can refill and check with each other 基于此,本文对常用定值分析法进行了论述,主要包括:传递系数法与毕肖普法;对可靠性理论的基本原理、方法及应用作了论述,主要有:蒙特卡洛法、可靠指标法与统计矩法,并用实例对两种方法进行对比研究,建议在边坡稳定分析中除采用定值法外,应同时采用可靠性分析法,两者相互补充、校核。
According to the geometry of slope measurements for the subjective wavefront optometer , a wavefont reconstruction model using zernike polynomial with normalization factor is put forward . based on householder transformation and gram - schmidt orthogonalization method , two methods for working out unknown zernike coefficients are bring forward . the error propagation parameter for the wavefront reconstruction model is deduced 深入研究了带标准化因子的zernike多项式的性质;针对主观式像差仪波前斜率采样方案,提出了采用带标准化因子的zernike多项式对眼测试波前进行重建的数学模型;提出了两种求解方法,即基于householder变换求解法和基于gram - schmidt正交化求解法,用于确定重建模型中的未知模式系数;推导出了该波前重建模型对斜率测量误差的传递系数。
In this paper , based on the analysis of the rlem of theory foundation , computing method , preference , applicability , etc , we anatomized the rlem of three self - deficiencies and six scarcities . moreover , we adopted the parallel ways of contrasting the rlem with the fem and applied it to analyzing the impact of slide block of elasticity and plasticity , slip surface of coefficient and slip bed of elasticity , plasticity upon the stability of slope and in the plain linearity slope , the plain refracted line slope and the plain arc slope . in addition , we discussed the warp of between the lem of ( sarma , janbu , order , bishop , morgenstera - price , etc ) and the fem of result and the distributing of positive stress and shear stress on the slip surface 本文从剖析刚体极限平衡法的理论基础、计算方法、参数选取、适用条件等方面入手,剖析了刚体极限平衡方法的3点自身缺陷和6点不足,并在此基础上采用了刚体极限平衡法(平面滑动破坏法、 sarma法、传递系数法、普遍条分法、 janbu法、 bishop法、 morgenstern - price法)与大型有限元法对比研究的方法,分析研究了平面直线型滑坡、平面折线型滑坡、平面圆弧型滑坡在渐进破坏中边坡的滑体弹塑性参数、滑面塑性参数) 、滑床的弹塑性、以及极限平衡法无法考虑开挖应力释放等因素对边坡稳定性的影响与滑动面上的正应力、剪应力分布规律、安全系数的解答的差异。
After the reservoir sluices , the national highway 213 in this area will be submerged . so the national highway 213will increase its elevation to about 920 meters . in order to estimate the influence of the slope - sliding and bank - collapsing which caused by the reservoir sluices to the elevated highway , and to estimate possible emigration problem , stability analysis of landslide body no . l , 2 , and 3 in i , ii area which located in bank accumulation body of zipingpu reservoir in national highway 213 is made by transfer coefficient method and 2 - d 3 - d fem in this paper 紫坪铺水库正常蓄水位高程877m ,水库蓄水后将淹没该段现国道213线,因此国道213线将改线抬高至920m高程附近,为正确评价因水库蓄水造成的滑坡、塌岸对改线公路的影响,以及可能产生的移民问题,本文用传递系数法和二维、三维有限元方法对有可能失稳的213国道紫坪铺库区库岸堆积体、区的1号、 2号、 3号滑坡体进行了稳定性分析。
This paper establishes the linear model of hydro - turbine and deducts its transfer coefficients . then the optimized operation parameters are gained in the frequency disturbance and load rejection simulation . through comparing dynamically , this paper analyses the impact on its dynamic performance if some governing system parameter changes 在研究小波动情形时,即系统在稳定工作工况点附近小瞬变时,可以把非线性系统进行线性化处理;本文建立了水轮机调节系统的线性化模型,推导了其中的传递系数;对水轮机调节系统的频率扰动和机组突甩负荷工况进行了仿真试验,整定了最佳调节参数;通过动态比较,分析了调节系统参数改变对其动态性能的影响。