Dynamic Response Analyses of Plastic Greenhouse Structure considering Fluctuating Wind Load

Wind load is one of the main factors plastic greenhouse collapse. To solve dynamic response problem greenhouses under wind and determine dangerous section a skeleton structure, investigated lump method presented for analysis greenhouse, considering pulsating on basis Timoshenko beam theory. First, designed according to microbody concept. On theory, governing equations structure are derived, realization process algorithm also provided. Second, accuracy effectiveness proposed numerical verified by an example in which bending wave variable cross with free ends propagates. Finally, steel skeletons analyzed effect simulation speed, spatial distribution maximum node displacement stress obtained. Computational results show that peak near top greenhouse. The most chord leeward bottom, has 219.4 MPa, bottom 1 m height side 248.5 MPa. Bending factor rapid increase at skeleton. cross-sectional caused fluctuating loads higher than those average loads. should be considered wind-induced analyses greenhouses.