关键词: 树木保温, 绷带, 热能分析, ADAMS, 响应面法

Abstract:

With the increasing number of foreign trees introduced into landscape greening construction in various regions， wrapping cold resistant trees with bandages is an important measure to avoid frostbite in cold weather. In order to achieve efficient， high-quality and low energy consumption in bandage wrapping， this article calculated the optimal overlap of bandages， designed and optimized the parameters of the circular winding mechanism. A bandage model was established using the discrete element method， and the heat conduction module in EDEM was used to simulate the heat transfer of tree trunks at an ambient temperature of -19 ℃（253 K） for 8 h， multiple sets of different bandage overlaps were set， and the bandage overlap required for tree trunks not to be frostbitten was obtained as 1/2. Solid works software was used to model the C-shaped rotating ring， a key component of the winding mechanism， and the model was imported into ADAMS for dynamic simulation of winding rotation. A response surface test was designed based on the design factors of ring width， ring thickness， and modulus， with the stress and mass as the response values. Based on the data obtained from ADAMS simulation， a regression equation for stress and mass was constructed and variance analysis was performed on the experimental data to obtain the optimal structural parameters： ring width of 109.352 mm， ring thickness of 70 mm， modulus of 4.5 mm. Under this parameter combination， the stress was 15.589 MPa and the mass was 51.905 kg. The feasibility of kinematic simulation and optimization design was verified through verification test and prototype test. The above results provided some references for the design and development of tree insulation protection and bandage wrapping devices.

Key words: tree insulation, bandage, thermal energy analysis, ADAMS, response surface methodology