節腹目 的英文怎麼說
中文拼音 [jiéfùmù]
節腹目
英文
ricinulei-
Taking thickness of web members and main chords as design variables and the lightest weight of crane booms as objective junction, considering constraints of rigidity and stability etc., this paper establishes the math model of optimal design
摘要選取起重機臂架的腹桿壁厚和各節臂架的主弦桿壁厚為設計變量，以最小重量為優化目標，考慮剛度和穩定性等約束條件，建立優化數學模型。Moreover, the detailed calculation and contrastive analysis are carried out by using the software ansys. theoretical calculation and testing results show that adopting the connection construction with a hole on the web can alleviate the stress state greatly and transform the failure mode of the connection from brittle fracture to local buckling damage on beam, reduces the possibility of brittle fracture by welding and improve the ductility performance of connection to a great extent
結果表明，採用腹板開孔的節點形式，可以使梁的塑性鉸位置由梁根部向中部偏移，達到了有效控制塑性鉸位置的目的;同時，採用這種節點構造可以改變節點附近的梁截面應力分佈狀態，降低了節點脆性破壞的可能性，使節點的破壞模式從脆性破壞轉變為梁的局部屈曲破壞，很大程度上改善了結構的延性。
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