振动深松蓄水保墒技术

该项技术示范与推广的核心是多功能振动式深松机，它是由振动源(振动体)、减振系统、传动系统、支架和深松铲组成。其深松铲形状不同于其它同类产品，且强度高、耐磨，使用寿命超过国外同类产品。该机是实行保护性耕作的一种新型农机具，不仅能完成深松作业，还有收获块茎作物和根茎类中草药的辅助功能。该机适用于干旱、半干旱水资源匮乏的旱作农业区，     

各向异性材料超声直线电机

提出了一种利用各向异性材料（ＣＦＲＰ）作为振动体的新型超声直线电机,分析了它的工作原理,建立了振动体的动力这方程,求出两人固有频率,分别应对所电机的两个运动方向实验研究了电机的驱动力和速度,结果表明电机的最大驱动力为０．５Ｎ速度为０～８ｍｍ／ｓ与驱动电压有良好的线形关系,可以通过切换固有频率实现电机的双向运动。     

边界点方法误差分析

本文利用边界点方法，对振动体外部声辐射问题进行了研究，文章对在边界点方法这一快速，准确的数值方法详细介绍的基础上，给出了该方法的建模，求解过程中，造成计算结果误差的各种因素和相应的控制策略。     

具有分离组件的振动体(系统)的设计

实际应用中经常会遇到具有分离组件的振动体（系统）的设计问题。本文分析了各分离组件的力电阻抗等效电路，并将对应的四端网络相互串联，以分离组件的材料和截面积为变量，经过分析得出具有分离组件的振动件不管材料是滞相同，设计时均可将多个分离口组件看为一个体的设计规律。     

超声疲劳振动体的有限元计算及动态模态分析

从超声疲劳载荷的主要特征出发，通过三维有限元计算及动态模态分析，研究了超声疲劳载荷下包括整体裂纹扩展试件及聚能器在内的振动体的应力、应变场和位移分布；分别讨论了超声疲劳载荷（Ｒ＝－１）和超声疲劳载荷叠加平均应力（Ｒ〉－１）两种情况下振动体固有振动模态的变化规律，为便于理解，简要综述了超声疲劳试验机的工作原理以及应用超声疲劳试验技术研究工程结构材料疲劳裂纹扩展性能的方法。     

Orthogonal spherical wave source boundary point method and its application to acoustic holography

When solving acoustic radiation problem in the routine boundary point method (BPM), the inverse of the particular solution matrix of surface normal velocities is needed and the matrix must be full rank and reversible. However, the type of the particular solution sources is single and the sources are not linear independent, so the locations of the particular solution sources inside the vibrating body must be selected carefully. But, in the routine BPM, the loca-tions are determined by an experiential formula, so the method may be invalid for a complicated vibrating body. In this paper, the construction method of the particular solution sources is improved first, and the singular value decomposition (SVD) technique and the Moore-Penrose pseudoinverse are adopted to realize the inversion. As a consequence, the particular solution matrix of surface normal velocities can be non-full rank and the locations of the particular sources can be determined easily. On the basis of the improved BPM, the spherical wave sources of different orders are proposed to be the particular solution sources. Here, all particular solution sources are located on only one point inside the vibrating body, so the problem of the locations of the particular solution sources is thoroughly solved, and such particular solution sources that are useless for the calculation results are discarded. The theoretical model is established at first, and then the proposed method is used to realize the nearfield acoustic holography (NAH). Subsequently, an experiment is investigated to validate the feasibility and correctness of the proposed method and its application to acoustic holography.     

长期非平稳荷载调谐质量减振阻尼器优化设计

研究外荷载为长期非平稳随机过程，考虑长期荷载的特性，采用1个概率谱密度函数来反映长期非平稳随机荷载及其特征；概率谱密度函数是基于大量的一般谱密度函数的统计特性获得，以延长结构的抗疲劳使用寿命为目标函数，提出了调谐质量减振阻尼器的优化设计方法，这在实际工程中有着极为广阔的应用前景，本文旨在从理论上发展长期非平稳随机荷载作用睛调谐质量减振阻尼器的优化设计方法；文中采用长期波浪实测数据，给出了1个数值算值说明整个设计过程。