Author：Guo-Shiang Hwang^1,4, Li-Duhng Huarng², Chih-kai Yang³

Abstrct：

    Various materials were used to construct a greenhouse facility for crop cultivation to improve the growth environment, increase production or improve quality. The purpose of the facility is to prevent wind and rain, and to prevent disease and pests from entering the greenhouse. Therefore, to build a sturdy greenhouse is very important. At present, the facility construction level is different, some construction contractors built greenhouses based on the rule of thumb to choose materials and practices, and in some cases caused the collapse of the greenhouses or damage of plastic films and thus leads to presence of pests and diseases. To improve the above-mentioned problem, we should investigate the cause of the damage and design a wind resistant greenhouse structure. The structural mechanics analysis and numerical simulations with the finite element method can be applied to solve the construction strength problems and to design a better greenhouse structure. During the year, our research team conducted a study on greenhouse strength topics. We have completed the structural design and strength simulation analysis of the greenhouses that can withstand the pressure generated by force 10 gusty winds on Beaufort wind scale. The results can help farmers build strong greenhouses and keep the function of reducing pests and diseases.

Key words: Greenhouse, Structure, Numerical simulation.

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¹ Assistant Researcher, Agricultural Engineering Division, TARI, Taichung, Taiwan, ROC.
² Researcher, Agricultural Engineering Division, TARI, Taichung, Taiwan, ROC.
³ Associate Researcher and Director of Agricultural Engineering Division, TARI, Taichung, Taiwan, ROC.
⁴ Corresponding author, e-mail: hangoshan@tari.gov.tw; Fax: 886-4-23317717.

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