| 1. | Adhesives with solvents for assembly of unplasticized pvc pipe elements . suitability for use
未增塑聚氯乙烯管件装配用溶剂粘合剂.使用的适宜性 |
| 2. | Adhesive with solvents for assembly of unplasticized pvc pipe elements . characterization . basic test methods
塑料制品.未增塑聚氯乙烯管件装配用溶剂粘合剂.表征.基本试验方法 |
| 3. | Foundry products . ductile cast iron piping elements . socket serie . gs express joint . assembly dimensions and joint accessories
铸造产品.可锻铸铁管道零件.承插系列. gs快换接头.组装尺寸和接头附件 |
| 4. | Refrigerating systems and heat pumps - flexible pipe elements , vibration isolators and expansion joints - requirements , design and installation
制冷系统和热泵-软管件隔振器和膨胀接头-要求设计与安装 |
| 5. | Foundry products . ductile cast iron piping elements . socket series . gs standard joint . assembly dimensions and joint accessories
铸造产品.可锻铸铁管道零件.承插系列. gs标准接头.组装尺寸和接头附件 |
| 6. | Refrigerating systems and heat pumps - flexible pipe elements , vibration isolators and expansion joints - requirements , design and installation
制冷系统和热泵.软管元件防振器和膨胀接头.要求设计和安装 |
| 7. | Refrigerating systems and heat pumps - flexible pipe elements , vibration isolators and expansion joints - requirements , design and installation
制冷系统和热力泵.柔性管元件.振动隔绝器和膨胀节.要求,设计和安装 |
| 8. | Refrigerating systems and heat pumps - flexible pipe elements , vibration isolators and expansion joints - requirements , design and installation ; german version en 1736 : 2000
制冷系统和热泵.软管元件隔振器和膨胀节.要求设 |
| 9. | The main research is as follows : analyze and research the boundary constraint and the structure characteristic and segment the frame making use of the shell element , the pipe element etc . on the base of it the practical finite element model has been established ; analyze the mode of the frame by dint of the finite element model . and get the inherent frequency and the vibration mode of the frame . tentatively estimate the dynamic characteristic of the frame and analyze the inherent frequency that may be lead to the resonance
论文的主要研究工作如下：分析研究车架的边界条件和结构特性，并用壳、管等单元对该车架进行离散，建立一种切实有效的车架有限元模型；对该车架的有限元模型进行模态分析，求得其的固有频率和振型，并对车架的动态特性做出初步评估，分析可能引起车架振动的固有频率；在模态分析基础上，研究发动机输出的简谐力引起的车架位移响应(即谐响应分析) ，以考察摩托车车架各部位的振动情况并与模态分析对比，分析是否与该车架的固有频率相耦合而导致共振；在深入研究车架的模态分析及谐响应分析、清晰地认识了摩托车车架动态特性的基础上，分析并提出了采用橡胶减震器对车架进行隔振的减震方法。 |
| 10. | Then , the modal analysis of two differently typical biomimetic wings are conducted and their modal parameters as nature frequency and vibration modes are obtained . as a result , the plane - structure wings with shell elements for fmav is not ideal comparing with the truss - structure wings composed by shell and pipe elements
利用ansys软件对两种结构类型的仿生翼进行模态分析,得到其低阶固有频率及振型等模态参数,并由结果指出纯壳单元平板结构作为微扑翼飞行器的机翼不够理想,而采用梁单元和壳单元的复合结构是设计微扑翼飞行器机翼的一个方向。 |
