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在飞机结构设计中,主传力构件的轻量化设计十分关键。通过引入结构承载因子,对加强框结构的传力路径进行量化,得到加强框结构最佳的传力路径。相对于传统的结构尺寸优化设计方法,提出的基于承载因子的传力路径优化方法仅需要考虑结构外形和载荷对结构承载的影响,不必考虑结构细节尺寸大小,因此,该方法具有高度的概括性和综合性。同时,通过求出的结构最小承载因子,再结合结构设计中人为确定的许用应力,即可估算出结构的最小质量,这对传统优化方法所得结果具有较大的指向作用。
In the design of the aircraft structure, the design of the main force components lightweight design is critical. By introducing the structural bearing factor, the force transmission path of the reinforced frame structure is quantified to obtain the optimal transmission force path of the reinforced frame structure. Compared with the traditional method of structural dimension optimization, the proposed load-carrying path-based optimization method only needs to consider the influence of the structure shape and load on the structural bearing, regardless of the size of the structural details. Therefore, this method has a high degree of generality And comprehensive. At the same time, the minimum weight of the structure can be estimated by calculating the minimum bearing capacity of the structure, combined with the allowable allowable stress in the design of the structure, which has a larger direct effect on the result obtained by the traditional optimization method.