Considering the randomness of physics parameters of structural material ( mass density and elastic module ) , the problem of the structural dynamic characteristic analysis based on probability is studied . the problems of dynamic response analysis of closed loop control system based on reliability for the intelligent truss structures with random parameters were studied , in which the randomness of physics parameters of structural material and applied loads and control forces are considered 在考虑结构材料的物理参数(质量密度和弹性模量)为随机变量的情况下,对结构进行了基于概率的动力特性分析;在考虑结构材料的物理参数、外加荷载和闭环控制力均为随机变量的情况下,对结构进行了动力响应分析。
These methods are following : ( 1 ) in order to build fem model conveniently and enhance calculating speed , interceped a finite length and built a 2d - symmetry model . ( 2 ) in order to apply loads conveniently , kept the entrance of cold fluid . ( 3 ) in order to obtain numerical results in steady situation , lengthened export and import ends 这些方法主要有: ( 1 )为了便于建立模型并提高计算速度,对于实际工程中采用的长径比特别大的换热管采取截取有限长度的方法并建立二维对称简化模型; ( 2 )提出采取保留冷流体入口端,截取有限长度的方法施加载荷; ( 3 )适当延长翅片管的出口端和入口端,以便获得稳定工况的数值解。
In such cases , shakedown analyses are of practical significance . shakedown analyses are aimed to evaluate ultimate bearing capacity of soil structures or foundations under varied loads . shakedown theorems , which are generalizations of the limit theorems , can provide appropriate bounds of externally - applied loads for such complex loading programs 究其原因,一方面安定性分析的应用研究还不够充分,实验验证也不够多;另一方面安定性分析在处理复杂结构时的计算规模非常大,使得实际问题变得不可求解。
Owing to the interfacial cracking which occurs under higher applied load conditions , the composite with high content of tib _ 2 phase exhibited a transition from mild wear to severe wear over the applied load range from 10 n to 80 n . under moderate applied load , increasing the sliding speed caused a decrease in wear rate and friction coefficient of the in - situ composites because the formation of a protective oxide film occurred on the sliding surface and the hardness of the subsurface layer was maintained due to reinforcement of tib2 nanoparticles in the cu matrix 随着载荷的增加, cu -纳米tib2原位复合材料的磨损率和摩擦系数增加;由于在较高载荷下发生表面开裂,高含量的tib2相增强原位复合材料发生了由轻度磨损向严重磨损形式的转化。在中等载荷下由于表面保护性氧化膜的形成和基体中纳米tib2相的存在使复合材料具有良好的抗软化能力, cu -纳米tib2原位复合材料的磨损率和摩擦系数随着滑动速度的增加而下降。
applied: adj. 适用的,应用的,实用的 (opp. pure, ...load: n. 1.装载,担子;负担;工作(负荷)量。 2.(车船 ...applied load factor: 使用载荷系数direction of the applied load: 加载方向external applied load: 外载荷externally applied load: 外加载荷; 外载gradually applied load: 渐加荷载; 逐渐施加的荷载instantaneously applied load: 瞬时荷载sudden applied load: 突加载荷suddenly applied load: 突加载荷; 突加载核; 骤加荷载; 骤加载荷suddenly-applied load: 突加载荷; 骤加荷载applied: adj. 适用的,应用的,实用的 (opp. pure, abstract, theoretical)。 applied to: 施加到be applied to: 被用于...来源:考试大; 适用于, 应用于, 施加于, 用来表示, 与...接触; 用于be applied with: 装配有a load of: 大量, 许多load: n. 1.装载,担子;负担;工作(负荷)量。 2.(车船等的)装载量;一驮,一车,一飞机。 3.【电、机】(机械等的)负载(量),负荷(量);发电量。 4.充填,装药,装弹。 5.〔pl.〕许多,大量,一大堆。 6.〔俚语〕使人喝醉的量。 7.【生物学】(不利)负荷〔指有害基因的存在〕。 a load of care 精神负担。 a load of debt 债务的负担。 be ever ready to bear a heavy load on one's shoulders 勇于挑重担。 a cart load of furniture 一货车家具。 a load of hay 一堆干草。 We have to make three loads of the cargo. 我们得把货物分成三批装运。 genetic load【生物学】遗传负荷〔指有害基因的存在〕。 the breaking load最大载荷。 the capacity load满载。 the dead [static] load恒载,静(荷)载,自重。 the live [moving, mobile] load活负载,动荷载。 the peak load最大负载,峰负载 the permissible load容许负载。 the rated load额定载荷。 the safe load安全负载。 the working load资用负载。 loads of friends 大批朋友。 loads of time 充裕的时间。 a teaching load of twenty hours a week 每星期二十小时的教学任务。 be a load off one's mind 如释负重。 get a load of 〔美俚〕仔细听;注意看。 have a load on 〔美俚〕喝醉。take a load off one's feet 〔美俚〕坐下休息。 take a load off sb.'s mind 解除某人思想负担,使某人放心。 vt. 1.把货装到(船、车等)上;装(货)。 2.装满,使负担。 3.把子弹装到(枪里);把胶卷装入(照相机)。 4.用铅加重(骰子、手杖等);用低劣物质等搀入。 5.(人寿保险)加收额外保险费。 load cargo into the hold 把货装进船舱。 a heart loaded with care 心事重重。 a table loaded with delicacies 摆满佳肴的桌子。 air loaded with carbon 充满碳气的空气。 load one's stomach with food 吃得太多。 load sb. with praise 极力称赞某人。load a camera with film 给照相机装胶卷。 This wine has been loaded. 这种酒是搀了水的。 vi. 1.(在枪里)装弹药;装料。 2.(车、船等)装货;上船,上车。 Load! 【军事】装子弹! The ship is loading for London. 这船正装货运往伦敦。 They loaded into the boat. 他们上船了。 be loaded down with 〔美国〕 = be loaded up with 装着…,存有(某种股票等)。 load down 装载甚重。 loaded for bear 〔俚语〕 1. 有充分准备。 2. 生气;准备打架。 load the dice against sb. 对某人使用加重骰子;使用不正当手段占人便宜。 load on: 加负荷load with: 装载某物no load: 空载; 免佣金的股票; 无荷载; 无载的no-load: adj. (出售股票时)免付佣金的。 on load: 带负载的; 有载的; 在荷载下to load: 装胶卷; 装入,寄存,写入,加载appl applied: 应用的applied accountancy: 应用会计