国产在线播放剧情演绎_亚洲欧美日韩成人综合_69视频在线观看高清免费_亚洲a∨无码之日韩精品_中日韩免费一级毛片_首页中文字幕中文字幕在线_天堂资源最新版在线_精品国产3p在线观看_av无码免费无禁网站_国产成人情侣激情

1.Wind vibration dynamic analysis: Wind can be divided into the average wind and pulsating wind two parts, the average wind cycle length, low structure of the total use of the equivalent of the manager. The period of pulsating wind is relatively short, and the total use of the structure is the dynamic property.

2. Static wind pressure shape coefficient determination: Wind load carrier type coefficient is said wind pressure on the structure of the important parameters, the general structure of the figure coefficient can be found from the load specification, but the membrane structure of different shapes, can not be directly obtained from the load specification. Therefore, the larger membrane structure is basically required to carry out wind tunnel test, so as to get a relatively correct local wind pressure shock coefficient and average wind carrier shape coefficient of the membrane structure.

3. Aerodynamic instability: membrane structure is wind-sensitive structure, there is the problem of aerodynamic instability, in essence, the structure of the air bomb instability is due to the structure in the process of vibration and airflow in the vibration mode coupling absorption of energy, when the absorption of energy greater than the dissipation of energy, will generate energy accumulation, when this energy accumulation reached a certain value , the structure is transformed from a low-energy vibration into a high-energy vibrational form.

4. The determination of pulsating wind pressure system: membrane structure under load displacement is relatively large, the change of structure displacement will affect the surrounding wind field, so the corresponding process of wind power of membrane structure building is the process of fluid solid.