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。
Fist of all , on the basis of the research of agone boffins , this author investigates the interaction mechanism of bolts and rock , and introduces the elastic ? lastic analytical resolution which is consist of the liner structure , the equivalent reinforced wall rock and the original wall rock in the simple loading from the equivalent well - proportioned view ; this solution is very important meaning for the engineering design . on the basis of coulomb friction model , the author introduces the finite element equation of the contact problem in order to provide the academic foundation for the application of msc . marc . finally , combining the engineering practice of the non - linear analysis of shield tunnel through yellow river of the south - north water transfer and using the model of friction , the author researched the evolution law of stress and displacement field in the structure of grouted rock bolts , and analyzed the effect to the stress and deformation of surrounding rock mass due to anchor supports 首先,在前人研究成果的基础上,对锚杆与围岩的相互作用机理进行研究,利用全长锚固锚杆的中性点理论,从等效均化的角度来考虑锚杆对围岩的加固作用,并推导了在简单荷载作用下,含有衬砌、等效加固后的围岩、原始围岩三者的弹塑性解析解,对工程设计有着重要的参考意义;在数值模拟方面,以考虑锚固围岩满足规则化库仑摩擦模型为基础,利用虚功原理推导了接触问题的有限元方程的计算格式,为开发运用大型商用有限元软件msc . marc提供了理论根据,也形成了本文的理论基础:最后,论文以南水北调东线穿黄隧洞稳定性分析项目为工程实例,利用本文所述的接触问题的摩擦模型理论,对锚杆支护结构的应力场、位移场的变化规律进行了研究,分析了加锚支护对隧洞围岩应力、变形的影响。
( 2 ) with the universal finite element software ansys , reasonable finite models for such slab - column connection were established and a static non - linear analysis was made , and the rule of this structure about the aspects of force deformation and destruction under vertical load and unbalanced bend are summarized . based on this , a simplified calculation method of punching capacity is advanced 研究空腹板柱节点的传力机理和破坏模式;对在竖向荷载作用下、竖向荷载和不平衡弯矩共同作用下板柱节点内力、变形和破坏过程进行研究,并提出了抗冲切承载力的简化计算方法。
Abstract : based on the principle of mininmum potential and using rayleigh - ritz method , the geometric non - linear analysis of higher bridge piers was solved in this paper . the new concept of equivalent horizontal force proposed by the author may be casily to calculate the second effect , which was produced due to the vertical forces and resisted by the piers and rubber pad bearings incorporately . the simple formula in this paper are applicable to calculate by hand , understood clearly without computation of successive iteration , higher precision and graspable easily for the disigmer therefore it has the practical significance 文摘:根据最小势能原理,用瑞雷-里兹法解决了高桥墩的几何非线性分析问题;其次,提出了等效水平力的新概念,可以方便地解决桥墩和板式橡胶支座联合抵抗垂直力所产生的二次效应问题.笔者提出适合于手算的简便计算公式,概念明确,勿须迭代运算,精度较高,易为设计人员掌握,因此具有实用价值
3 . we do short circuit analysis upon multiple magnetic circuit transformers by use of steady non - linear analysis and get the leakage reactance respectively between high voltage and high voltage 、 high voltage and low voltage 、 two high voltage and low voltage 、 low voltage and high voltage and low voltage and two high voltage . what ’ s more , we do finite element analysis upon the temperature field of transformers and according to its distribution we get the wind speed to forced air cooling 3 、采用稳态非线性分析法对多磁路变压器进行短路阻抗计算,利用能量法计算出变压器高压与高压、高压与低压、两高压与低压、低压与高压以及低压与两高压之间的漏感;对变压器的温度场进行有限元分析,确定温度场分布情况。
2 . a rational finite element model of thin - wall core box cast - in - site concrete hollow floor is established and such floor is made a non - linear analysis in ansys which is an international common software . comparing numerical analysis results and testing results with the ones achieved by the proposed formula , it is found that they are tallied well , so the validation of the above two methods is verified 2 、建立了薄壁箱体现浇混凝土空心楼盖的有限元分析模型,采用ansys有限元软件对其进行了非线形全过程分析,将有限元计算结果、本文公式的计算结果和试验结果进行对比分析,发现三者吻合较好,论证了这两种方法的可行性。
Aes - ccm mode use counter mode application simple , systematic expense little , may raise the efficiency of encryption . aes algorithm is presented in allusion to differential cryptanalysis and linear analysis . therefore , the security of aes algorithm in current stage have enough guarantee 而aes算法是针对差分分析和线性分析提出的,它的最大优点是可以给出算法的最佳差分特征的概率及最佳线性逼近的偏差界,具有抵抗差分密码分析及线性密码分析的能力,因此aes算法的安全性在现阶段是有足够保障的。
The methods considering the elastoplasticity are the elastic - plastic hinge method and the pseudo load method . based on the need of non - linear analysis , researchers brought forward nonlinear calculation methods to control the iterative constringency , such as the load controlling method , the displacement controlling method , the arc length controlling method and the pseudo load method 考虑弹塑性的分析方法有:弹性-塑性铰法和虚拟荷载法根据非线性研究分析的需要,研究人员先后提出了:荷载控制法、位移控制法、弧长控制法和做功控制法等控制迭代收敛的非线性计算方法。
Based on fea analysis software - ansys , this text discussed the application of the command fluid and ansys parametric design language to solve , and some foundational problems with commonness in analysis , for example , parametric modeling , setting material property , carving up mesh , importing boundary condition and physics property , and post disposal of the result and so on ; and apply this to the actual problems in weld , quenching and static linear analysis 本文论述了基于大型有限元分析软件ansys平台下,运用命令流及apdl参数化设计语言编程求解、分析问题时所涉及的一些带有共性的基础性问题,如参数化建模、材料属性的设置、网格的划分、边界条件及物性系数的引入、计算结果的后处理等;并将其运用于焊接、工件淬火、线性静力分析等实际问题。
Three circumstances on the geometric non - linear analysis are considered : the sag phenomenon of cables the nonlinear behavior of bending members and the geometry change due to large displacement . the non - linear behavior of cables is verified by introduced the ernst cable modulus of elasticity and cr formation is applied to analyze the non - linear of beams . an incremental - iterative method based on the newton - raphson method is adopted here to solve the non - behavior equations 几何非线性分析主要考虑三个方面:索的垂度效应、梁柱效应和结构大位移,其中:索的非线性分析采用ernst弹性模量对索材料的弹性模量进行修正,计及索的垂度效应的方法;梁单元的非线性分析采用cr列式法,计算中采用基于newton - raphson法的增量迭代方法求解非线性方程组。
This paper brings out the mechanics calculating model of the shear model . four factors are considered in the linear analysis of the static behavior of the shear model . they are the parting number of height , the parting number of width , the type of pole and the type of shear diaphragm 本文建立了受剪板式薄壁结构的“肋-板”抗剪单元的力学计算模型,对于该计算模型,主要考虑了四个因素对抗剪单元在线弹性范围内静力性能的影响,即杆件规格、受剪板规格、高度方向等分数和宽度方向等分数。