Tmt ( zhuzhou times new material technology co . ltd ) mainly deals in macromolecule material . it is r & d or manufacture base of macromolecule elastic component element in the railway traffic equipment industry of the whole nation 株洲时代新材料科技股份有限公司(简称时代新材)主要从事高分子材料的研究和生产,是全国铁路交通装备行业最具经营规模和科技实力的高分子减振弹性元件研发、生产基地,于2002年在上交所核准上市。
This paper bring out design method of inverse eigenvalue problem , which adapts to general structures with linear parameters , namely coefficients of all or partial elastic component and inertial component are treated as design parameters , for given some order natural frequency and corresponding vibrating mode , all of useable designing parameters will be got through solving a linear system of equations , thereby stiffness matrix and mass matrix of actual structure are constructed . this paper also discusses existence condition and unique of results 提出了适用于具有线性参数的一般结构的逆特征值问题的设计方法,即以系统的全部或部分的弹性元件与惯性元件的系数为设计参数,对于预先给定的若干阶固有频率及相应振型,通过求解一线性方程组即可确定全部实际可行的设计变量,从而构造出实际结构的刚度矩阵和质量矩阵,并论证了解的存在性与唯一性。
This last component is usually described as the aggregate balance . although traditionally it is one of the smaller components of the monetary base , it is also the most elastic component : its contraction or expansion is the crucial determinant in whether domestic interest rates respectively rise or fall 原因是这样的:虽然一直以来被称为总结馀的银行体系结馀只占货币基础较小部分,但它亦是最具弹性的一部分,意思是总结馀的扩大或收缩,对本地利率的升跌都具关键作用。
After selecting the elastic component shape suitable for the structure of the machine tool , elementary design is implemented for two kinds of component material : 40crnimn & ly12 . then the analyse of the elastic component stress and strain is completed , and the check of the component age limit and strength follows 本文对弹性元件进行了选型和设计,根据机床结构要求确定了弹性元件的形式后,针对两种常用的弹性元件材料( 40crnimn和ly12 )进行了初步设计,然后对弹性元件进行应力应变分析,并对弹性元件进行了强度和寿命校验。
This article , with the study on transmissibility characteristics of vibration - isolating device viewed as a continuum , analysed characteristics of vibration - isolating device under the modles of discrete elastic components , poles and beams , so as to provide scientific evidence for resolving vibration problems of numerical - control machine tools 摘要将隔振器看作质量连续体,通过研究刚性基础上数控机床隔振系统的传递率特性,分析比较了离散弹性元件、一维杆和梁等几种隔振器模型方式下隔振系统的特性,为正确解决刚性基础上数控机床振动噪声控制的技术问题提供依据。