酸性电解水对茶角胸叶甲防治减药增效试验

旨在验证酸性电解水与常规药剂不同用量混配后对防治茶角胸叶甲的减量增效作用.结果显示,酸性电解水配合推荐剂量70％的12％联苯·吡虫啉悬浮剂,防治效果最佳,说明施用酸性电解水防治茶角胸叶甲在减少常规药剂使用量30％的情况下仍能有效控制其为害.     

某微车的少片变截面钢板弹簧结构设计分析与验证

主要是对某微车的后悬架的钢板弹簧的结构进行设计,并进行CAE分析与实验验证。首先根据底盘布置的空间、轮跳量以及性能要求等得到悬架钢板弹簧的板长、刚度等作为设计输入条件,设计计算满足所选材料强度等要求而得到板簧的各个参数。然后建立三维模型并CAE分析其强度、刚度。最后对样件进行台架实验与测试,验证前期的设计计算与分析的结果。对比各结果均较为接近,从而证实此设计方法的可行性。     

Constitutive relationship of ionic polymer-metal composite and static response character of its cantilever setup to voltage

As a new ionic polymer-metal composite（IPMC） for artificial muscle,the mechanical performance parameters and the relationship between the deformation and the electrical parameters of the IPMC were studied. With the digital speckle correlation method,the constitutive relationship of the IPMC was confirmed. With non-contact photography measurement,a cantilever setup was designed to confirm the relationship between the deformation of the IPMC film and the applied voltage. The relationship curve of tip displacement of the IPMC cantilever setup vs the voltage was achieved. The results indicate that the IPMC is isotropic,its elastic modulus is 232 MPa and Poisson ratio is 0.163. The curve achieved from the test of the tip displacement of the IPMC cantilever setup shows that the tip displacement reaches the maximum when the stimulated voltage is 5 V. And the tip displacement descends largely when the frequency of the applied voltage is between 30 mHz and 100 mHz.     

微型汽车驱动桥壳的疲劳寿命预测

分析了疲劳损伤理论在疲劳寿命预测中的应用,并基于该疲劳损伤理论对微型车驱动桥壳进行仿真计算。考虑了桥壳焊缝部位对桥壳整体的影响,针对焊缝进行建模,并且对其赋予BS7608—1993标准中与其结构、受力对应的S—N曲线。通过台架试验验证了仿真计算结果的准确性,基于有限元技术的疲劳寿命预测方法能较准确地预测结构的疲劳寿命,对产品的设计和开发有一定的指导意义。     

一种离子交换树脂金属复合材料(IPMC)的力学参数测定

对一种新型的人工肌肉材料--离子交换树脂金属复合材料(IPMC)的力学性能参数进行了测试研究.进行了精密拉伸实验,测定了其弹性模量E和泊松比v,确定了其本构关系,证实了其具有各向同性特性.测试研究为开展IPMC人工肌肉和其应用研究提供了参考数据.     

Active vibration control of multibody system with quick startup and brake based on active damping

1 INTRODUCTIONIn micro-electronics manufacture , a lot ofequipment must move fromone position to an oth-er position,then stop and perform a task. Afterthat they will start at another position.Fromstar-tup to brake , if the vibration of system is toogreat ,the vibration range may exceedthe precisionof fixed position.In recent years , many scholars[1 10]have re-searched suppression of vibration by utilizing pie-zoelectric structure . Kaji wara et al[2]studied ac-tive control of the vibratio…