linear adj. 1.线的,直线的。 2.长度的。 3.【数学】一次的,线性的。 4.【动、植】线状的;细长的。 5.由线条组成的,以线条为主的,强调线条的。 linear amplification 直线放大。 a linear equation 一次方程式。 a linear leaf 线形叶。 linear arts 线条艺术。
The assumption about deformation character and constitutional relationship of high strength concrete and reinforcement under elevated temperature is proposed making use of the general regularity of high strength concrete compression - flexure member . the ultimate load capacity and deformation of high strength concrete compression - flexure members under elevated temperature are analyzed by means of full - range and non - linear analysis method . the computing results and test data are in good agreement 根据高温时高强混凝土压弯构件的一般规律,给出了高温时高强混凝土和钢筋变形特征的假设和本构关系,利用全过程非线性分析方法分析了高温时高强混凝土压弯构件的极限承载力和变形,计算结果与试验结果吻合较好。
With the continuous development of engineering technology the linear structural analysis based on elastic theory gradually cannot reflect strucfore ' s real working state well , thus the new sttuctural analysis , non - linear analysis , which can reflect sttucture ' s working situation more realistically develops . especially , due to the recent rapid renewal in the mathematics and computer , the finite element method of structural analysis grows very quickly there is not too much research on the non - linear analysis of reinforced concrete ( rc ) structure 随着工程技术的不断发展,基于弹性理论基础上的线性结构分析已越来越难以反映结构的实际状态,更能反映结构实际受力状态的结构非线性分析便发展起来,尤其是结构有限元分析,由于近年来数学理论和计算机技术的迅速发展而发展很快。
( 2 ) 3d - fem analysis for the load - bearing capacity of the stud connector as the prevailing method to determine the shear rigidity and the limit load - bearing capacity of the shear connector is the push test , which is time consuming and laborious , in this thesis the push tesi specimen of the stud connector is simulated through the non - linear analysis module of the msc / nastran and the numerical analysis results are in good coherence with that of the practicality lev ; as a result , the shear rigidity and the limit load - bearing capacity of the stud connector can be determined by the finite element method and only a few practicality verification tests ( 2 )栓钉型剪力键承载力的3d - fem分析针对当前剪力键一般通过费时费力的推顶试验来确定抗剪刚度和极限承载力的状况,本文利用msc nastran非线性模块实现了对栓钉剪力键推顶试样的数值模拟分析,数值计算结果与试验结果能够很好吻合。这使得通过有限元方法的模拟和少量实物试验的验证,就能确定栓钉剪力键的剪切刚度和极限承载力,可以大大节省时间和经费。
Firstly , the basic theory of switch reluctance generator ( srg ) is discussed in detailed , based on the mechanism electric energy converting analysis , non - linear analysis and non - linear simulation . three control methods of srg ( angle position control method , current chopping control method , pulse width modulation control method ) are deeply studied and analyzed . the electronic controller , which controlled by dsp or by hardware circuit are developed for low - power switched reluctance generation system 首先系统地研究了开关磁阻电机发电运行的基本理论,从机电能量变换的角度分析开关磁阻发电机的机电能量变化规律;通过非线性分析和非线性仿真方法,明晰开关磁阻电机发电本质,概括出开关磁阻电机发电运行的特点;系统、深入地研究了开关磁阻电机发电运行的控制方案(角度位置控制、电流斩波控制、脉宽调制控制) 。
First with section analysis and single variable , this essay analyzes the difference of twenty - one financial indexes between st and no st stock companies in five years basic financial data . at last , three financial crisis prediction modes are set up with six financial indexes which are the most important financial indexes in linear probability model , fisher linear analysis model and logistic analysis model 首先应用剖面分析和单变量判定分析,研究财务危机出现前5年内各年这二类公司21个财务指标的差异;最后选定6个财务指标为预警指标,应用lpm多元线性回归分析、 fisher线性判定分析和logistic回归分析三种方法,分别建立三种预测财务危机的模型。
So it is not enough if we only execute linear analysis to a cable - stayed bridge ; 2 ) when live loads are distributed to full span the effects of geometric nonlinear for the structure are smaller than to two side spans or mid - span only ; 3 ) linear analysis is enough to live loads since the difference between linear analysis and nonlinear analysis to the structure is relatively small under live loads ; 4 ) the effects of every geometric nonlinear element to decision final shape parameters are very little , and the results of linear and nonlinear are nearly equal ; 5 ) under construction the effects of geometric nonlinear to cable - stayed bridges must be considered 2 )活载作用下,加载方式不同,非线性的影响结果也不一样,其中按全桥满布方式进行加载时受几何非线性的影响最小。 3 )活载作用下,可以用线性分析的手段对活载进行近似计算,以便减少计算量。 4 )各非线性因素对结构最终形态确定参数的影响非常小,线性结果与非线性结果相差无几。