内蕴时间理论用于NOPD结构响应计算的研究  

AN INVESTIGATION OF RESPONSE CALCULATION FOR NOPD STRUCRURE BY ENDOCHRONIC THEORY

作　　者：王炜[1] 黄协清[1] 陈天宁[1] 毛宽民[1] 

机构地区：[1]西安交通大学振动与噪声控制工程研究所,西安710049

出　　处：《力学学报》2003年第2期246-252,共7页Chinese Journal of Theoretical and Applied Mechanics

基　　金：国家自然科学基金资助项目(59775019).

摘　　要：非阻塞性微颗粒阻尼(NOPD)技术是在传统颗粒阻尼和冲击阻尼技术基础上发展起来的一种复合阻尼新技术,具有良好的减振效果.研究利用内蕴时间理论推导了散粒体的增量型内时本构方程并通过罚单元解决了粉体与结构之间的连接问题,在此基础上对NOPD结构的响应进行了仿真计算和实验验证.结果表明,将内时理论应用于NOPD响应计算分析是可行的,为NOPD的工程应用提供了一种有效的分析方法.Non-obstructive particle damping (NOPD) technology is a new composite damping technology which is based on traditional particle damping and impact damping technique. NOPD technology has a good effect on vibration absorption. An incremental form of endochronic constitutive equation of discrete particle is derived by endochronic theory and penalty element is introduced to solve connect problem between the structure and the discrete particle. Computer simulation and experiment of response of NOPD structure are done on the basis of them. Results show that it is feasible to calculate response of NOPD structure by endochronic theory, which affords an effective analysis method for engineering application of NOPD structure.

关 键 词：NOPD 结构响应 颗粒阻尼 内蕴时间理论 减振 数值算法 

分 类 号：O328[理学—一般力学与力学基础]