Gong Xiansheng Zhao Mei Luo Zhenhuang
1996, 19(5):30-36.
Abstract:基于对一种非线性迟滞特性钢丝绳联轴器振动试验数据分析和处理,提出了联轴器特性的数学模型:Q(A,f,x,x)=K1(A)x+K3(A)x3+K5(A)x5+C(A,f)|x|n(A,f)sgn(x),其中刚度函数K1(A)、K3(A)和K5(A)描述联轴器刚度特性,阻尼函数C(A,f)描述阻尼大小,阻尼的成分由阻尼函数n(A,f)描述。并用参数整体辨识方法辨识了模型中的各参数,弄清了该型联轴器的动刚度和阻尼特性。研究表明,提出的数学模型能很好地反映非线性动刚度和阻尼对非线性迟滞恢复力Q的作用,可以全面描述振幅A、激励频率f、瞬态位移x和瞬态速度x对恢复力的影响,适用于具有非线性迟滞特性的其他类型联轴器。
Cai KunbaoYang RuifangLu XiaoYu JihuiWang Gongrui
1996, 19(5):42-47.
Abstract:The duality principle in electrical network was generalized to establish the one to one correspondence between generalized linear viscoelastic model and RC electrical network.On this basis,a guess was proved to be true that any generalized linear viscoelastic model with arbitrary complexity can be simplified as generalized Voigt chain equivalently.
the Dynamic Characteristics of Driving System Chen Haibin Cai Shaoxi Cheng Xuemei Li Deyuan
1996, 19(5):48-53.
Abstract:运用机械阻抗法对自行研制的体液粘弹性自动检测系统的驱动系统进行动力学分析。结果表明:驱动系统可以简化为一个单自由度有阻尼的二阶振动系统,其固有频率和阻尼比分别为:fn=84±1.3Hz,ξ=0.05±0.023;激振量(即驱动电压v(t))和位移响应(即活塞位移x(t))之间存在着一定大小的幅值比Mxv和相位差δxv,基本上实现了不失真传递;驱动系统还具有比较好的稳定性。
1996, 19(5):60-62.
Abstract:This article studies on the distributional law of underskined internal crack in steel billets of continuous casting billet in additon to the appearance and features of the outer cross crack and outer fold which result from the internal crack during the piercing process.
1996, 19(5):63-67.
Abstract:The melts of smelting reduction with iron bath has peculiar behaviour for high concentration and high reduction rate of FeO.Testing results show that slag is sure foaming.The generation of the foaming slag is effected by FeO concentration and reduction rate as well as basicity of slag.Addition granulated coke can decrease foaming or without ability of foaming.
1996, 19(5):68-75.
Abstract:对模糊随机有限元平衡方程作入水平截集,得随机区间方程,将该方程中的刚度矩阵,载荷列阵和节点位移列阵在初始随机向量的均值处展开,利用区间数分解和小参数摄动理论导出求解随机区间方程的递归方程组,还推导了计算模糊随机位和多,应变和应力统计特征的计算公式。
Zhu Caichao Qin Datong Tang Zhongyi Xie Zhijiang
1996, 19(5):76-78.
Abstract:The detailed analysis has been done for the dynamical characteristics of the system with the 2T air hydraulic hammer.The computer digital simulation has been done for the elevating course of the air hydraulic hammer using the method of the power bond graph and the states space analysis.The results obtained from digital simulation are agreeable with the experimental results.
Zhang Pin Huang Shanglian Pan Baochan
1996, 19(5):79-82.
Abstract:A structure description language of form document is presented.First,the form frame lines are seeked and located by using of line criterion;Then,the processing information fields are obtained by means of adaptng the description language.Finally we can easily realize processing of useful information.
Xie LiliYang GuanlingHe ZhenjiangGuo YongcaiJiang Pisu
1996, 19(5):83-87.
Abstract:A kind of the concentric circular photodiodes array is discussed.Via theoretic analysis and derivation,the principle and procedures of design of the detector are proposed,and obtain expressions for the design.
1996, 19(5):88-94.
Abstract:In this paper,a probabilistic production simulation for the joint dispatch of multi area interconnected power system is presented.The method evaluates the expected unserved energy of the joint dispatch system and further the other basic simulation indices,based on the probability density function of the unit available capacity and the multi area demand supply feasibility conditions,and the detail is showed by a four areas case.
Duan Yurong Zhu Jinming Liu Size Hong Guiyu
1996, 19(5):95-99.
Abstract:In order to overcome some technical difficulties,we adopt ingenously the grey models combined with the quantitative analog method,and select the Dan Jiangkou Project which has accumulated practical operation data for a long time as the analog project to predict the economic influence for the circumjacent reservoir region of the Longtan hydropower project.On the basis of analog we have built various industrial economic grey models,and compare them with the corresponding predictions for the unconstructed reservoir case.The predictions of the former are greatly larger than the later ones.and hence provides a certain scientific basis for the central leaders to make a decision for constructing the huge hydropower project ultimateiy.
1996, 19(5):100-109.
Abstract:在作者前期工作的基础上继续讨论国圈好模糊拟阵的基础性质,给出圈好模糊拟阵的“模糊圈公理”;然后,研究了“基好模糊拟阵”及其与圈好模糊拟阵的等价性;最后,总结圈好模糊拟阵与“基好模糊拟阵”的性质,提出“准模糊糊图拟阵”的概念,证明了“准模糊图拟阵”的“模糊基公理”和导出拟阵序列特征。刻画了“准模糊图拟阵”的内在本质,提供了一种构造“准模糊图拟阵”的方法。
Yin Yuozhong Wang Zhijun Lu Xiaofeng Hu Pin
1996, 19(5):116-120.
Abstract:采用自制的网络电阻测试装置及单片机数采系统,试验研究了细粒子流化床内的电阻分布特性,建立了一个描述料层空隙率分布的更接近于工程实际的ε-H模型。同时,提出了表述空隙率ε,碰撞频率f与流化风速V关系的ε与f-V推理模型。
Li Zhili He Zuwei Tang Shengli Yang Chen
1996, 19(5):121-126.
Abstract:Based on the Moody model and complied with the modular modeling ideology and principle,a general break simulation model has been proposed for both single and two phase conditions in a thermal liquid pipe.This model now is used to develop the training simulator a power plant.